Sweeting Performance - Performance Brake Systems

Sweeting Performance - Performance Brake Systems We publish tons of reviews & info from 75 years of experience.

Sweeting Performance manufactures brake systems for performance vehicles, small volume vehicle manufacturers, off-highway construction/agricultural equipment, & retrofits for obsolete systems.

2 Inch Master Cylinder for Bosch Hydro-Max® Brake System, Remote Reservoir w/ Differential Pressure Switch (2.00" / 50.8...
09/02/2026

2 Inch Master Cylinder for Bosch Hydro-Max® Brake System, Remote Reservoir w/ Differential Pressure Switch (2.00" / 50.80 mm)

By the Sweeting Performance Team

When you're running four-wheel disc brakes on a heavy commercial chassis, a 2.00" bore master cylinder is necessary to push enough fluid volume for those larger multi-piston calipers. But on many specialized builds, tight overhead clearance or frame-mounting makes an attached reservoir impossible to reach or fit.

This version solves the packaging problem with a remote-reservoir adapter while adding an integrated differential pressure switch. That switch wires directly into your vehicle's dash warning system to alert you immediately if either the primary or secondary brake circuit experiences a pressure loss.

Sweeting Performance Part Number: HMMC200RRDS

Product Link: https://www.powerbrakeservice.net/hymacywirere.html

Specifications:

* Bore Diameter: 2.00" (50.80 mm)
* Fluid Compatibility: DOT 3 Brake Fluid
* Reservoir: Remote
* Differential Pressure Switch: Yes
* Primary Line Port: 9/16"-18 Inverted Flare
* Secondary Line Port: 1/2"-20 Inverted Flare
* Material: Iron, Steel, Aluminum, Rubber

What the Differential Pressure Switch Does

Inside dual-circuit master cylinders, the primary and secondary braking sections operate independently. If a brake line fails, a hose bursts, or a caliper seal leaks, hydraulic pressure drops on that side. The differential pressure switch senses the pressure imbalance between the two circuits and immediately trips the brake warning light on your dash—giving drivers an early alert that they are now only braking with their front or only braking with their rear brakes.

Why Use a Remote Reservoir?

It comes down to two practical shop issues: clearance and maintenance access.

1. Zero Overhead Clearance: Cab-over trucks, frame-mounted boosters beneath floorboards, and 90-degree reverse-linkage pedal boxes rarely have enough vertical room for a top-mounted reservoir.
2. Easy Maintenance Access: Checking brake fluid shouldn't require pulling floor plates or crawling under the truck. With a remote setup, the master cylinder stays tucked away on the frame, while the reservoir mounts high on the firewall or bulkhead for quick, clean checks and top-offs.

How the Remote Adapter Connects

* Adapter Plate: A low-profile adapter plate mounts to the top of the master cylinder body.
* Remote Reservoir: A dual-chamber reservoir mounts vertically in an accessible spot (usually the firewall).
* Supply Hoses: Two hoses connect the reservoir outlets to the adapter plate inlets to keep both circuits gravity-fed.

A Quick Reminder on Fluids

The Hydro-Max® booster and the master cylinder bolt together, but their fluid circuits are separate:

* Hydro-Max® Booster: Uses power steering fluid (or manufacturer recommend transmission fluid) from your engine's power steering pump.
* Master Cylinder & Reservoir Supply Lines: Uses standard DOT 3 brake fluid.

Never use petroleum-based fluids in the master cylinder or reservoir supply lines, as petroleum will cause the rubber to swell and fail rapidly.

Dealing with "Obsolete" Dealer Part Numbers

Because 2.00" remote master cylinders with pressure switches are used on everything from delivery vans and step vans to school buses, motorhomes, mining machinery, and airport ground support equipment (GSE), there are dozens of OEM part numbers for what is fundamentally the same core Bosch cylinder.

When dealers update their catalogs, older numbers often get flagged as "Obsolete" or "No Longer Available." The good news is that the core Bosch Hydro-Max® master cylinder is still actively put together and available through Sweeting Performance.

Common Applications:

* Frame-mounted Hydro-Max® brake setups with brake warning light circuits
* Mining and Heavy Industrial Equipment
* Cab-over trucks, step vans, and delivery vehicles
* Motorhomes and RV chassis
* Commercial buses and shuttle chassis
* Airport Ground Support Equipment (GSE) and tow tractors
* Medium-duty vehicles using 9/16"-18 primary and 1/2"-20 secondary hard lines with limited overhead space

Need Help Identifying Your Setup?

Power Brake Service and Sweeting Performance have been re-engineering, rebuilding, and supplying commercial hydraulic brake systems since 1950. Across three generations, we've handled pretty much every Hydro-Max® setup out there.

If you aren't sure if you need this 2.00" remote-reservoir unit with the differential pressure switch:

1. Check your VIN, vehicle details, and look for raised casting numbers on the cylinder body as genuine Bosch units will have the bore size cast onto the side.
2. Check the thread sizes on your hard lines (9/16"-18 and 1/2"-20) and confirm if your harness plugs into a pressure switch between the ports.
3. Send photos of your master cylinder, mounting location, and hose routing to our tech team.

Ordering & Tech Support

* Product Link: https://www.powerbrakeservice.net/hymacywirere.html
* Phone: (714) 330-5286
* Tech Email: [email protected]
* Website: www.powerbrakeservice.net

2 Inch Master Cylinder for Bosch Hydro-Max® Brake System, Remote Reservoir (2.00" / 50.80 mm)By the Sweeting Performance...
09/02/2026

2 Inch Master Cylinder for Bosch Hydro-Max® Brake System, Remote Reservoir (2.00" / 50.80 mm)

By the Sweeting Performance Team

When you're running four-wheel disc brakes on a heavy commercial chassis, you need a 2.00" bore master cylinder to move enough fluid for those larger multi-piston calipers. But on a lot of specialized builds, there just isn't room to mount a reservoir directly on top of the master cylinder—or if there is room, it's buried under a floorboard where you can't reach the cap to check or fill the fluid.

That’s where this remote-reservoir design comes in. It lets you mount the master cylinder down on the frame rail or inside a tight pedal box, while placing the reservoir up on the firewall where you can actually get to it.

Sweeting Performance Part Number: HMC200RR

Product Link: https://www.powerbrakeservice.net/sweeting-performance-master-cylinder-bosch-hydro-max-brake-system-2-inch-remote-reservoir-50-80-mm.html

Specifications:
* Bore Diameter: 2.00" (50.80 mm)
* Fluid Compatibility: DOT 3 Brake Fluid
* Reservoir: Remote
* Primary Line Port: 9/16"-18 Inverted Flare
* Secondary Line Port: 1/2"-20 Inverted Flare
* Material: Iron, Steel, Aluminum, Rubber

Why Use a Remote Reservoir?

It comes down to two practical shop issues: clearance and maintenance access.

1. Zero Overhead Clearance: Cab-over trucks, frame-mounted boosters beneath the floor, and 90-degree reverse-linkage pedal boxes often don't have enough vertical space for even a short reservoir.
2. Easy Maintenance Access: Checking brake fluid shouldn't require pulling floor panels or crawling under the truck. With a remote setup, the master cylinder stays tucked away on the frame, while the reservoir mounts high on the firewall or bulkhead for easy checks and top-offs.

How the Remote Adapter Connects

* Adapter Plate: A low-profile adapter plate mounts directly to the top ports of the master cylinder body.
* Remote Reservoir: A dual-chamber reservoir mounts vertically in an accessible spot (usually the firewall).
* Supply Hoses: Two fluid-rated hoses connect the reservoir outlets to the master cylinder adapter plate inlets to keep both circuits gravity-fed.

A Quick Reminder on Fluids

The Hydro-Max® booster and the master cylinder bolt together, but their fluid circuits are completely separate:

* Hydro-Max® Booster: Uses power steering fluid (or ATF) from your engine's power steering pump.
* Master Cylinder & Remote Lines: Uses standard DOT 3 brake fluid.

Never use petroleum-based fluids in the master cylinder or remote supply lines as they will cause the rubber to swell and fail rapidly.

Dealing with "Obsolete" Dealer Part Numbers

Because 2.00" remote master cylinders are used on everything from delivery vans and step vans to school buses, motorhomes, and airport ground support equipment (GSE), there are dozens of OEM part numbers for what is fundamentally the same core Bosch cylinder.

When dealers update their catalogs, older numbers often get flagged as "Obsolete" or "No Longer Available." The good news is that the core Bosch Hydro-Max® master cylinder is still actively put together and available through Sweeting Performance.

Common Applications:

* Frame-mounted Hydro-Max® brake setups (under-floor / chassis mount)
* Mining Equipment
* Cab-over trucks, step vans, and delivery vehicles
* Motorhomes
* Commercial buses and shuttle chassis
* Airport Ground Support Equipment (GSE) and tow tractors
* Medium-duty vehicles using 9/16"-18 primary and 1/2"-20 secondary hard lines with limited overhead space

Need Help Identifying Your Setup?

Power Brake Service and Sweeting Performance have been re-engineering, rebuilding, and supplying commercial hydraulic brake systems since 1950. Across three generations, we've handled pretty much every Hydro-Max® setup out there.

If you aren't sure if you need this 2.00" remote-reservoir unit:

1. Check your VIN, vehicle details, and look for raised casting numbers on the cylinder body as genuine Bosch units will have the bore size cast onto the side.
2. Check the thread sizes on your hard lines (9/16"-18 and 1/2"-20).
3. Send photos of your master cylinder, mounting location, and hose routing to our tech team.

Ordering & Tech Support

* Product Link: https://www.powerbrakeservice.net/sweeting-performance-master-cylinder-bosch-hydro-max-brake-system-2-inch-remote-reservoir-50-80-mm.html
* Phone: (714) 330-5286
* Tech Email: [email protected]
* Website: www.powerbrakeservice.net

2 Inch Master Cylinder for Bosch Hydro-Max® Brake System, Short Reservoir (2.00 inch, 50.80 mm)By the Sweeting Performan...
09/01/2026

2 Inch Master Cylinder for Bosch Hydro-Max® Brake System, Short Reservoir (2.00 inch, 50.80 mm)

By the Sweeting Performance Engineering Staff

As commercial vehicle designs shifted toward four-wheel disc brake systems and higher Gross Vehicle Weight Ratings (GVWR), hydraulic fluid volume requirements grew significantly. vehicle manufacturers and Bosch moved toward a 2.00" (50.80 mm) bore master cylinder specifically to deliver the higher fluid displacement needed to drive heavy-duty multi-piston calipers. While standard firewall-mounted setups often accommodate tall reservoirs, tight engine bays and low-clearance chassis envelopes require a compact short-reservoir variant to prevent clearance issues.

Sweeting Performance supplies this original, genuine Bosch Hydro-Max® master cylinder built with a 2.00" bore, low-profile short composite reservoir, and standard inverted flare hydraulic outlets: https://www.powerbrakeservice.net/hymacywi2bos.html

Technical Specifications: Sweeting Performance Part # HMMC20SR

Bore Diameter: 2.00 Inch (50.80 mm)
Fluid Compatibility: DOT 3 Brake Fluid
Reservoir Type: Attached Low-Profile Dual-Chamber Composite Reservoir
Primary Outlet Port: 9/16"-18 Inverted Flare
Secondary Outlet Port: 1/2"-20 Inverted Flare
Materials: Cast Iron, Steel, Aluminum, Rubber

Packaging & Clearance: When to Specify the Short Reservoir

Determining whether your build needs a short or tall reservoir comes down to available vertical height and mounting location:

Tight Clearance Environments: Cab-over engine (COE) chassis, frame-mounted booster assemblies located beneath floorboards, and 90-degree reverse-linkage pedal boxes often have minimal vertical headroom. In these tight quarters, a tall reservoir will collide with sheet metal or floor framing, making this short-profile unit essential.

Fluid Capacity vs. Clearance: As disc brake pads wear down on multi-piston calipers, fluid level inside the reservoir gradually drops. If your booster and master cylinder are mounted on a standard firewall with unrestricted hood clearance, upgrading to a tall reservoir provides greater reserve capacity between maintenance intervals. However, if space is limited, staying with this short-reservoir configuration ensures a proper fit without structural interference.

Due to availability, this part may ship with a differential pressure switch port and a plug, it will operate the same as one without a third port.

Dual Hydraulic Circuits & Fluid Separation

While the Hydro-Max® booster and the master cylinder mount together on the firewall, their operation relies on two isolated hydraulic systems connected purely by a mechanical pushrod:

* Power Assist Hydraulic Circuit: Power steering fluid (or manufacturer-specified ATF) flows from the engine-driven pump through the steering gear and Hydro-Max® booster body to supply hydraulic assist. Fluid stays contained inside the booster.
* Wheel Braking Circuit: The master cylinder operates on a completely separate circuit, displacing fluid through the hard lines to the front and rear wheel caliper pistons or wheel cylinders.
* Fluid Type: This master cylinder uses standard DOT 3 brake fluid.

Overcoming Discontinued & "Obsolete" OEM Numbers

Because this specific 2.00" tall-reservoir master cylinder is utilized across a wide spectrum of platforms—including Ford, General Motors, Navistar/International, Freightliner, Workhorse, Blue Bird, Thomas Built, and various RV and GSE chassis—dozens of individual OEM part numbers exist for what is mechanically the same core assembly.

Original equipment manufacturers frequently update part numbers for minor production changes, such as altered casting or fluid reservoir designs that have no effect on fitment or operation. When a dealership parts system marks a specific part number as "Obsolete" or "No Longer Available (NLA)," it rarely means the physical master cylinder is out of production. The underlying Bosch Hydro-Max® part remains actively produced and fully available through Sweeting Performance.

Common Fleet & Commercial Applications
(Ideal for low-clearance commercial chassis, specialized machinery, and custom body builds)

Cab-Over Medium-Duty Trucks & Delivery Vans
Frame-Mounted Hydro-Max® Assemblies with Reverse Linkages
Commercial Buses, Shuttle Vans, and Step Vans
Ground Support Equipment (GSE) and Airport Service Tow Tractors
Medium-duty platforms utilizing standard 9/16"-18 primary and 1/2"-20 secondary line fittings

Identification & Technical Support

Power Brake Service and Sweeting Performance have been re-engineering, rebuilding, and distributing heavy-duty commercial hydraulic brake components since 1950. Backed by over seven decades of technical expertise across three generations, we can verify exact component replacements even when dealer lookup systems fail.

If you need to verify whether your application requires this 2.00" bore short-reservoir unit with 9/16"-18 and 1/2"-20 outlets:

1. Locate your VIN, vehicle year, make, model, and GVWR. Check the master cylinder body for raised numbers, as genuine Bosch units have the bore size cast into the side of the housing.
2. Check and record the fitting sizes on your existing hard lines.
3. Email clear photos of your current master cylinder, reservoir profile, and booster mounting setup directly to our technical team for confirmation.

Sweeting Performance is your go-to source for original replacement components and custom accessory parts for Bosch Hydro-Max® brake systems.

Ordering Information

Product Link: https://www.powerbrakeservice.net/hymacywi2bos.html
Phone Support: (714) 330-5286
Technical Email: [email protected]
Main Website: www.powerbrakeservice.net

2 Inch Master Cylinder for Bosch Hydro-Max® Brake System, Short Reservoir with Differential Pressure Switch (2.00 inch, ...
09/01/2026

2 Inch Master Cylinder for Bosch Hydro-Max® Brake System, Short Reservoir with Differential Pressure Switch (2.00 inch, 50.80 mm)

By the Sweeting Performance Engineering Staff

As commercial chassis moved toward four-wheel disc brake architectures and higher Gross Vehicle Weight (GVW), Bosch introduced the 2.00" (50.80 mm) bore master cylinder to move the larger fluid volume required by heavy-duty multi-piston calipers. While tall-reservoir units became the standard for conventional firewall-mounted setups, this short-reservoir variant may be needed in applications with tight space constraints like vertical clearance limitations.

Sweeting Performance supplies this genuine, unaltered original Bosch Hydro-Max® master cylinder configured with a 2.00" bore, short composite reservoir, integrated differential pressure switch, and standard inverted flare ports: https://www.powerbrakeservice.net/hmmcgm2dss.html

Technical Specifications: Sweeting Performance Part # HMMCUN20SRDS

Specifications:
Bore Diameter: 2.00 Inch (50.80 mm)
Fluid Compatibility: DOT 3 Brake Fluid
Reservoir Type: Attached Short-Profile Dual-Chamber Composite Reservoir
Differential Pressure Switch: Yes
Primary Outlet Port: 9/16"-18 Inverted Flare
Secondary Outlet Port: 1/2"-20 Inverted Flare
Material: Iron, Steel, Aluminum, Rubber, Plastic

Packaging vs. Reservoir Capacity: When to Use the Short Reservoir

Selecting between a short and tall reservoir comes down to physical clearance and mounting location:

Packaging & Space Constraints: Cab-over engine (COE) chassis, frame-mounted booster assemblies beneath floorboards, and 90-degree reverse-linkage pedal boxes often have extremely limited vertical space above the master cylinder cap. In these tight enclosures, a tall reservoir will collide with the cab floor or firewall sheet metal, making this short-reservoir unit essential.

Reservoir Capacity Consideration: As brake pads wear down on high-volume multi-piston calipers, fluid level drops in the reservoir. If your booster and master cylinder are mounted on a standard firewall with ample hood clearance, and they have the same 9/16"-18 and 1/2"-20 port sizes, upgrading to the tall-reservoir version provides additional fluid reserve between service intervals. If you are limited on space, you may want to stay with the short reservoir.

Understanding the Fluid Circuits & Compatibility

While the Hydro-Max® booster and the master cylinder mount together, their operation relies on two isolated hydraulic systems connected purely by a mechanical pushrod:

Power Assist Hydraulic Circuit: Power steering fluid (or manufacturer-specified ATF) flows from the engine-driven pump through the steering gear and Hydro-Max® booster body to supply hydraulic assist. Fluid stays contained inside the booster.

Wheel Braking Circuit: The master cylinder operates on a completely separate circuit, displacing fluid through the hard lines to the front and rear wheel calipers or wheel cylinders.

Fluid Type: This master cylinder uses standard DOT 3 brake fluid. Never introduce petroleum-based hydraulic oils into this unit, as petroleum will destroy the internal rubber seals.

Navigating OEM "Obsolete" Part Numbers

Because short-reservoir 2.00" master cylinders are used across specialized commercial chassis, school buses, delivery vans, cab-overs, and ground support equipment (GSE), dozens of OEM part numbers exist for what is fundamentally the same core Bosch assembly.

When vehicle manufacturers update bracketry or part numbering systems, older numbers are frequently flagged as "Obsolete" or "No Longer Available (NLA)" by dealer counters. Despite these designations, the core Bosch Hydro-Max® master cylinder remains actively produced and available through Sweeting Performance.

Common Fleet & Chassis Applications
(Note: Fits a wide variety of commercial vehicles with low vertical clearance, including custom body builds and specialized equipment):

Cab-Over Medium-Duty Trucks & Delivery Vans
Frame-Mounted Hydro-Max® Brake Assemblies with Reverse Linkage
Commercial Buses, Step Vans, and RV Chassis
Ground Support Equipment (GSE) and Airport Service Vehicles
Medium-duty platforms utilizing 9/16"-18 primary and 1/2"-20 secondary line fittings.

Identification & Technical Support

Power Brake Service and Sweeting Performance have been rebuilding, re-engineering, and supplying commercial hydraulic brake systems since 1950. With over seven decades of technical experience across three generations, we can identify exact replacements even when part numbers or OEM dealer lookup systems fail.

If you are unsure whether your vehicle requires this 2.00" bore, short-reservoir unit with 9/16"-18 and 1/2"-20 ports:

1. Confirm VIN, vehicle year, make, model, chassis weight rating, and check the cylinder casting for raised numbers as genuine Bosch master cylinders have the bore size cast into the side of the housing.
2. Verify thread sizes on your brake line fittings.
3. Email technical photos of your existing master cylinder, reservoir height, and booster assembly to our engineering team for direct confirmation.

Sweeting Performance is the Go-To Source for Genuine Replacement Components as well as Custom Accessory Parts for Bosch Hydro-Max® Brake Systems

Ordering Information
Product Link: https://www.powerbrakeservice.net/hmmcgm2dss.html
Phone Support: (714) 330-5286
Technical Email: [email protected]
Main Website: www.powerbrakeservice.net

2 Inch Master Cylinder for Bosch Hydro-Max® Brake System, Tall Reservoir (2.00 inch, 50.80 mm)By the Sweeting Performanc...
09/01/2026

2 Inch Master Cylinder for Bosch Hydro-Max® Brake System, Tall Reservoir (2.00 inch, 50.80 mm)

By the Sweeting Performance Engineering Staff

During the late 1990s and 2000s, commercial chassis manufacturers increasingly adopted four-wheel disc brake setups, higher Gross Vehicle Weight Ratings (GVWR), and increased tow ratings. To supply the high fluid volume required for heavy-duty multi-piston calipers, vehicle manufacturers and Bosch moved toward the 2.00" (50.80 mm) bore master cylinder with a tall-profile fluid reservoir as the primary medium-duty standard. This version offers maximum fluid displacement prior to differential pressure warning switch integration becoming common in the 2010s.

Sweeting Performance supplies this genuine, unaltered original Bosch Hydro-Max® master cylinder configured with a 2.00" bore, tall composite reservoir, and standard inverted flare ports: www.powerbrakeservice.net/hmmcgm200t.html

Technical Specifications: Sweeting Performance Part # HMMCUN20TR

Specifications:
Bore Diameter: 2.00 Inch (50.80 mm)
Fluid Compatibility: DOT 3 Brake Fluid
Reservoir Type: Attached Tall-Profile Dual-Chamber Composite Reservoir
Differential Pressure Switch: No
Primary Outlet Port: 9/16"-18 Inverted Flare
Secondary Outlet Port: 1/2"-20 Inverted Flare
Material: Iron, Steel, Aluminum, Rubber, Plastic
Technical Note: Depending on availability, this master cylinder may ship with the differential pressure switch port fitted with a plug

If your unit arrives with a plugged differential pressure switch port, it will operate the same as without the port.

Understanding the Fluid Circuits & Compatibility

While the Hydro-Max® booster and the master cylinder mount together on the firewall, their operation relies on two isolated hydraulic systems connected purely by a mechanical pushrod:

* Power Assist Hydraulic Circuit: Power steering fluid (or manufacturer-specified ATF) flows from the engine-driven pump through the steering gear and Hydro-Max® booster body to supply hydraulic assist. Fluid stays contained inside the booster.
* Wheel Braking Circuit: The master cylinder operates on a completely separate circuit, displacing fluid through the hard lines to the front and rear wheel calipers or wheel cylinders.
* Fluid Type: This master cylinder uses standard glycol-based DOT 3 brake fluid.

Navigating OEM "Obsolete" Part Numbers

Because this specific 2.00" tall-reservoir master cylinder is utilized across a wide spectrum of platforms—including Ford, General Motors, Navistar/International, Freightliner, Workhorse, Blue Bird, Thomas Built, and various RV and GSE chassis—dozens of individual OEM part numbers exist for what is mechanically the same core assembly.

Original equipment manufacturers frequently update part numbers for minor production changes, such as altered casting or fluid reservoir designs that have no effect on fitment or operation. When a dealership parts system marks a specific part number as "Obsolete" or "No Longer Available (NLA)," it rarely means the physical master cylinder is out of production. The underlying Bosch Hydro-Max® part remains actively produced and fully available through Sweeting Performance.

Common Fleet & Chassis Applications
(Note: This unit fits a vast range of commercial vehicles beyond this list, including custom buses, motorhomes, and Ground Support Equipment (GSE)):

-Chevrolet / GMC Kodiak & TopKick: C4500, C5500, C6500, C7500 (2003–2009)
-Chevrolet / GMC Medium Duty: T6500, T7500 (2004–2009)
-Chevrolet / GMC Bus & Stepvan: B60, B6000 (1983–1991), P60 (1983–1986)
-Isuzu Medium Duty: FTR, FVR (2003–2009), HTR, HVR (2005–2008)
-Ford, Navistar / International, Workhorse, Blue Bird, and Thomas Built medium-duty chassis utilizing 9/16"-18 and 1/2"-20 line fittings.

Identification & Technical Support
Backed by over 75 years of specialized hydraulic brake experience across three generations at Power Brake Service and Sweeting Performance, our engineering desk can verify correct master cylinder fitment even when OEM numbers are unlisted.

If you are unsure whether your vehicle requires this 2.00" bore, tall-reservoir unit with 9/16"-18 and 1/2"-20 ports:

1. Confirm VIN, vehicle year, make, model, chassis weight rating, and check the cylinder casting for raised numbers as genuine Bosch masters will have the bore size marked on their side
2. Verify thread sizes on your brake line fittings.
3. Email technical photos of your existing master cylinder and booster assembly to our engineering team for direct confirmation.

Sweeting Performance is the Go-To Source for Genuine Replacement Components as well as Custom Accessory Parts for Bosch Hydro-Max® Brake Systems

Ordering Information
Product Link: https://www.powerbrakeservice.net/hmmcgm200t.html
Phone Support: (714) 330-5286
Technical Email: [email protected]
Main Website: www.powerbrakeservice.net

2 Inch Master Cylinder for Bosch Hydro-Max® Brake System, Tall Reservoir w/ Differential Pressure Switch (2.00 inch, 50....
08/31/2026

2 Inch Master Cylinder for Bosch Hydro-Max® Brake System, Tall Reservoir w/ Differential Pressure Switch (2.00 inch, 50.80 mm)

By the Sweeting Performance Engineering Staff

As commercial chassis manufacturers shifted from drum setups toward four-wheel disc brake architectures, higher Gross Vehicle Weight Ratings (GVWR), and increased towing capacities, hydraulic volume demands on the braking system grew significantly. To move the fluid volume needed to actuate heavy multi-piston disc brake calipers, Bosch and major vehicle manufacturers have settled on the 2.00" (50.80 mm) bore, tall-reservoir Hydro-Max® master cylinder as the industry standard across modern medium-duty trucks, buses, motorhomes, and ground support equipment (GSE).

Sweeting Performance supplies this genuine, unaltered original Bosch Hydro-Max® master cylinder configured with the standard 2.00" bore, tall fluid reservoir, integrated differential pressure switch, and standard inverted flare line ports: https://www.powerbrakeservice.net/hmmcgm200tds.html

Understanding the Fluid Circuits & Compatibility

While the Hydro-Max® booster and the master cylinder mount together on the firewall, their operation relies on two isolated hydraulic systems connected purely by a mechanical pushrod:

* Power Assist Hydraulic Circuit: Power steering fluid (or manufacturer-specified ATF) flows from the engine-driven pump through the steering gear and Hydro-Max® booster body to supply hydraulic assist. Fluid stays contained inside the booster.
* Wheel Braking Circuit: The master cylinder operates on a completely separate circuit, displacing fluid through the hard lines to the front and rear wheel calipers or wheel cylinders.
* Fluid Type: This master cylinder uses standard glycol-based DOT 3 brake fluid.

Navigating OEM "Obsolete" Part Numbers

Because this specific 2.00" tall-reservoir master cylinder is utilized across a wide spectrum of platforms—including Ford, General Motors, Navistar/International, Freightliner, Workhorse, Blue Bird, Thomas Built, and various RV and GSE chassis—dozens of individual OEM part numbers exist for what is mechanically the same core assembly.

Original equipment manufacturers frequently update part numbers for minor production changes, such as altered casting or fluid reservoir designs that have no effect on fitment or operation. When a dealership parts system marks a specific part number as "Obsolete" or "No Longer Available (NLA)," it rarely means the physical master cylinder is out of production. The underlying Bosch Hydro-Max® unit remains actively produced and fully available through Sweeting Performance.

Product Specifications: Sweeting Performance Part

* Bore Size: 2.00 Inch (50.80 mm) for high-displacement brake systems.
* Fluid Compatibility: Standard DOT 3 Brake Fluid.
* Reservoir Type: Tall-Profile, high-capacity dual-chamber composite reservoir.
* Differential Pressure Switch: Integrated switch monitors pressure balance between primary and secondary brake circuits.
* Primary Outlet Port: 9/16"-18 Inverted Flare.
* Secondary Outlet Port: 1/2"-20 Inverted Flare.
* Construction: Brand new, genuine unaltered Bosch production.

Identifying the Correct Master Cylinder for Your Fleet

Power Brake Service and Sweeting Performance have been rebuilding, re-engineering, and supplying commercial hydraulic brake systems since 1950. With over seven decades of technical experience across three generations, we can identify exact replacements even when casting numbers or OEM dealer lookup systems fail.

If you are unsure whether your vehicle requires this 2.00" bore, tall-reservoir unit with 9/16"-18 and 1/2"-20 ports:

1. Confirm vin, vehicle year, make, model, chassis weight rating, and check the cylinder casting for raised numbers as genuine Bosch masters will have the bore size marked on their side
2. Verify thread sizes on your brake line fittings.
3. Email technical photos of your existing master cylinder and booster assembly to our engineering team for direct confirmation.

Sweeting Performance: Specialized Hydraulic Brake Solutions

Order your genuine Bosch 2.00" Hydro-Max® Master Cylinder directly from Sweeting Performance:

* Product Link: www.powerbrakeservice.net/hmmcgm200tds.html
* Phone: (714) 330-5286
* Email: [email protected]
* Main Website: www.powerbrakeservice.net

Address

Huntington Beach, CA
92647

Telephone

+17143305286

Website

, ,

Alerts

Be the first to know and let us send you an email when Sweeting Performance - Performance Brake Systems posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Contact The Business

Send a message to Sweeting Performance - Performance Brake Systems:

Shortcuts

Share

Category