Castro Cepak Motorsports Diesel & Auto Repair

Castro Cepak Motorsports Diesel & Auto Repair Castro Cepak Motorsports Diesel & Auto Repair is a reliable auto repair shop in Billings, MT. For quality repair and services, you can trust, contact us today!

Castro Cepak Motorsports Diesel & Auto Repair is your family-owned and operated auto repair shop that provides reliable services to Billing, Montana! With 50 years of combined business experience, our shop has ASE Certified technicians who provide an array of services and repairs like scheduled maintenance and tune-ups, engine services, brake and suspension work, and so much more! As a NAPA Auto Care Center, our work is backed by NAPA’s 24-month/24,000-mile Nationwide Peace of Mind warranty.

Another fun one in the books! This beautiful 2026 Ford F-250 6.7L Platinum came in for some suspension upgrades! Custome...
06/17/2026

Another fun one in the books!

This beautiful 2026 Ford F-250 6.7L Platinum came in for some suspension upgrades! Customer provided a CJC Commuter 3.5in Lift Kit that came with a bunch of good quality Carli components! Customer also provided us with some new wheels and tires. We were able to install this awesome kit on this beautiful truck across the course of a couple days, and we just absolutely love the way it turned out!

Thank you John P. For trusting us with your build, vision, & vehicle. Hope you enjoy!

We do more than vehicle repairs! Give the office a call or check out our website to schedule your appointment! 📅

🌐: https://www.castrocepak.com
☎️: 406-850-0201
📧: [email protected]
📍: 1405 S 32nd ST W Billings, MT 59102
🕐: Monday-Friday 7:30am-5:00pm

Is the catalytic converter in your vehicle keeping you down? Is your vehicle kicking the dreaded P0420 MIL code?We can i...
06/12/2026

Is the catalytic converter in your vehicle keeping you down?

Is your vehicle kicking the dreaded P0420 MIL code?

We can install replacement catalytic converters, to get your exhaust system flowing like new again.

A clogged of faulty converter can make your vehicle run rough or even stall when at operating temperatures. Ignoring converter codes can cost you more headaches in the future.

Give us a call or check out our website to schedule your vehicles appointment today!

🌐: https://www.castrocepak.com
☎️: 406-850-0201
📧: [email protected]
📍: 1405 S 32nd ST W Billings, MT 59102
🕐: Monday-Friday 7:30am-5:00pm

It’s race day for Troy Cepak & Jeremy Castro @ Big Sky Speedway! Go support your local racetrack/drivers tonight & tomor...
06/12/2026

It’s race day for Troy Cepak & Jeremy Castro @ Big Sky Speedway!

Go support your local racetrack/drivers tonight & tomorrow night for a good time!

Wishing the boys the best of luck this weekend. 🏁

* Tip Of The Day *More Than Just Starting: Powering Modern Vehicle ElectronicsYears ago, a car battery's only major job ...
06/10/2026

* Tip Of The Day *

More Than Just Starting: Powering Modern Vehicle Electronics

Years ago, a car battery's only major job was cranking the engine. Once the vehicle was running, the alternator took over. Today, passenger vehicles are packed with advanced electronics that pull massive amounts of power.

A premium battery acts as a crucial voltage stabilizer for sensitive onboard systems, including:

Advanced Driver Assistance Systems (ADAS) like lane assist and automatic braking.

Infotainment systems, GPS, and Bluetooth connectivity.

Complex Engine Control Modules (ECMs) and body control computers.

If a battery's voltage drops even slightly below optimal levels, it can trigger ghost diagnostic trouble codes (DTCs), cause intermittent electrical glitches, or place unnecessary stress on the vehicle's alternator, leading to premature alternator failure.

If you are having issues with your charging system in your vehicle give us a call today to schedule an appointment to have it tested!

🌐: https://www.castrocepak.com
☎️: 406-850-0201
📧: [email protected]
📍: 1405 S 32nd ST W Billings, MT 59102
🕐: Monday-Friday 7:30am-5:00pm

Did you know we install vehicle accessories as well as repairs?This 09 Dodge Ram 2500 6.7L came in with an issue with th...
06/09/2026

Did you know we install vehicle accessories as well as repairs?

This 09 Dodge Ram 2500 6.7L came in with an issue with their old worn out aftermarket rear airbags where they would slowly seep out air over time. Found the bags to be badly weathered and leaking air slowly out the seems. We provided and installed a new Air Lift Kit to correct this issue. Results turned out nice and bags now hold proper desired pressure without leaking.

If your truck is sagging in the rear due to heavy loads, then this is a nice viable option to keep your bumper off the ground and to keep your rear suspension from being bottomed out.

If your vehicle(s) needs any accessories or repairs remember to give us a call, as we can get you handled in a timely fashion!

🌐: https://www.castrocepak.com
☎️: 406-850-0201
📧: [email protected]
📍: 1405 S 32nd ST W Billings, MT 59102
🕐: Monday-Friday 7:30am-5:00pm

It’s getting hotter outside, is your vehicles A/C System up to the task? 🥵🔥If your vehicle is struggling to keep you coo...
06/08/2026

It’s getting hotter outside, is your vehicles A/C System up to the task? 🥵🔥

If your vehicle is struggling to keep you cool during this summer heat, we can get you taken care of!

We have the machines for both; R134a & 1234yf Refrigerant/Freon

Check out our website or give us a call today to schedule your appointment!

🌐: https://www.castrocepak.com
☎️: 406-850-0201
📧: [email protected]
📍: 1405 S 32nd ST W Billings, MT 59102
🕐: Monday-Friday 7:30am-5:00pm

🚗💨 Ever wonder what’s keeping the air inside your vehicle clean?Meet your Cabin Air Filter. It’s your vehicle’s unsung h...
06/06/2026

🚗💨 Ever wonder what’s keeping the air inside your vehicle clean?

Meet your Cabin Air Filter. It’s your vehicle’s unsung hero, acting as the ultimate gatekeeper between the outside air and the air you breathe while driving.

Over time, this filter clogs up with dust, pollen, road debris, and allergens. Here is why keeping it fresh matters:

Breathe Cleaner Air: A fresh filter traps up to 99% of airborne particles, keeping dust, mold spores, and seasonal pollen out of your lungs and off your dashboard.

Boost Your AC & Heating: When a filter is clogged, your HVAC system has to work twice as hard to push air through. Replacing a dirty filter instantly improves airflow and helps your AC blow ice-cold.

Eliminate Musty Odors: If you notice a stale, dirty-sock smell when you turn on your vents, a contaminated cabin filter is almost always the culprit.

Defrost Faster: Restricted airflow makes it much harder for your defroster to clear moisture off your windshield on rainy or humid days.

How often should you swap it?
Generally every 15,000 to 30,000 miles, or at least once a year—especially after heavy allergy seasons or driving on dusty roads.

📅 Dropping your vehicle off for service soon? Ask us to check your cabin air filter while it's here to ensure you're breathing easy all summer long!

🌐: https://www.castrocepak.com
☎️: 406-850-0201
📧: [email protected]
📍: 1405 S 32nd ST W Billings, MT 59102
🕐: Monday-Friday 7:30am-5:00pm

Another day, another Differential Bearing Rebuild.This 12 Ford F-150 came in for a growling/howling from the drivetrain ...
06/04/2026

Another day, another Differential Bearing Rebuild.

This 12 Ford F-150 came in for a growling/howling from the drivetrain area around 50ish MPH. Drove vehicle on the lift and found noise to be coming from the rear differential. Removed rear carrier and found bearings to have failed due to bad fluid & rust. Cleaned axle housing assembly of rust/debris and installed new bearings to correct this issue.

Simple services on differentials can prevent this failure. Remember to have your drivetrain fluids inspected/serviced every so often. Not just your engine oil.

Check out our website or call the office to schedule your appointment today!

🌐: https://www.castrocepak.com
☎️: 406-850-0201
📧: [email protected]
📍: 1405 S 32nd ST W Billings, MT 59102
🕐: Monday-Friday 7:30am-5:00pm

Out with the old and IN with the NEW on this 12 Cummins!Customer had an internal failure within the stock turbocharger a...
06/03/2026

Out with the old and IN with the NEW on this 12 Cummins!

Customer had an internal failure within the stock turbocharger assembly. Upgraded customer to a 13-18 style turbocharger with a jumper harness to make it plug and play!

This BD Turbo is a good stock replacement assembly for those looking for a replacement turbocharger on their Cummins without breaking the bank!

Another day, another vehicle repaired and back on the road!

Give us a call or check out our website to schedule your vehicle(s) appointment today!

🌐: https://www.castrocepak.com
☎️: 406-850-0201
📧: [email protected]
📍: 1405 S 32nd ST W Billings, MT 59102
🕐: Monday-Friday 7:30am-5:00pm

Is your vehicle making noises from the steering/suspension component area?Does your steering feel loose or does your veh...
06/02/2026

Is your vehicle making noises from the steering/suspension component area?

Does your steering feel loose or does your vehicle wonder going down the road?

All these are signs of worn out suspension/steering components. A simple inspection can keep you and your family safe going down the road.

If your vehicle is acting up or giving you strange noises give us a call today to schedule your appointment!

🌐: https://www.castrocepak.com
☎️: 406-850-0201
📧: [email protected]
📍: 1405 S 32nd ST W Billings, MT 59102
🕐: Monday-Friday 7:30am-5:00pm

Address

1405 South 32nd Street West
Billings, MT
59102

Opening Hours

Monday 7:30am - 5pm
Tuesday 7:30am - 5pm
Wednesday 7:30am - 5pm
Thursday 7:30am - 5pm
Friday 7:30am - 5pm

Telephone

+14068500201

Website

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