Felder Kustom Fabrication

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Felder Kustom Fabrication FelderKustomFabrication (FKF) designs and fabricates custom components for diesel pickups

Attention to detail is 🔑L5P S400 kits have been keeping us very busy. Which one are you taking?Kit 1- 2020-2023Color- Ob...
10/12/2026

Attention to detail is 🔑

L5P S400 kits have been keeping us very busy. Which one are you taking?

Kit 1- 2020-2023
Color- Obsidian Black/Rockstar Sparkle
Polar White badges/clamps
TNT S480 96x88 1.25

Kit 2- 2017-2019
Color- Rose Chrome
TNT S467 83x74 .9

Kit 3- 2020-2023
Color- Wh***ey Bronze
TNT 472 87x82 1.0

Kit 4- 2020-2023
Color- Bronze Chrome
Oxblood Ransom badges/clamps
TNT 467 83x74 .9

A huge thank you to all our customers. We have always said this but we wouldn’t be here without you and we appreciate everyone’s support!

Happy thanksgiving to all the Canadians🇨🇦🍁

Lots on the go but still maintaining that quality👌Parts/Colors Shown in Order -19-23 Cummins High Mount 2G Swap-19-23 C...
09/28/2026

Lots on the go but still maintaining that quality👌

Parts/Colors Shown in Order

-19-23 Cummins High Mount 2G Swap
-19-23 Cummins Core support Cover
(Mermaid Candy)

-17-19 L5P S400 Turbo Kit
(Illusion Purple/Polar White)

-2019-2023 Cummins High Mount 2G swap
(Extreme Purple/Obsidian Black)

-Cummins High Mount Intake
(Inferno Red)

-15-19 GM Fuse Box Cover
(Lollypop Blue)

-13-18 Cummins Core Support Cover
(Illusion Cherry)

Took a minute to post this one as the truck has been back multiple times for multiple new products!Oleksyn came to us wi...
09/22/2026

Took a minute to post this one as the truck has been back multiple times for multiple new products!

Oleksyn came to us with a bone stock engine bay and an idea. We have used this truck to develop multiple new products for the 5th gens and there’s even more to come

- FKF 2019-2023 Cummins High Mount 2G Swap
- FKF 2019-2023 Cummins Core Support Cover
- FKF 2019-2023 Cummins Upper Coolant Tube
- FKF 2019-2023 Cummins Fender Support Brackets
- FKF 2013-2024 Cummins Fuse Box Cover
- FKF 2004.5- 2024 Cummins Brake Reservoir Cover
- FKF 2013-2024 Cummins Power Steering Reservoir Cover
- D&J Precision Machine Valve Cover and Intake Horn
- Steed Speed Cerakoted Manifold
- True North Turbos (TNT) S467

Can’t thank Shane and Kody enough for trusting us with this absolutely mint show truck. There’s still more to come for this engine bay 🤘

Colors Shown
Main- Illusion Tangerine Twist
Badges/Clamps- Walnut Brown

A lot going on. As always. And all thanks to everyone that continues to support us🤘
09/18/2026

A lot going on. As always. And all thanks to everyone that continues to support us🤘

Another L5P getting all the go fast parts S400/S400 compound turbo L5P ready to hit the streets paired with S&S Diesel M...
09/11/2026

Another L5P getting all the go fast parts

S400/S400 compound turbo L5P ready to hit the streets paired with S&S Diesel MotorsportÂŽ 100% injectors and 12mm CP3

Sporting True North Turbos (TNT) T6 488 over a T4 467. This should make for a very fast spooling 1000+hp setup with tons of top end power

This truck is also running both of our billet pedestals paired together

There is a high possibility we will be bringing these kits to market shortly in the future. The dual Non VGT brings another level of reliability when shooting for that 1000+HP mark which these L5Ps seem to love with bone stock engines. This setup will likely have a Wastegate added in the future to get the most out of the smaller valley turbo and keep that quick spool time and nice street ability

Austin Battenfelder

An L5P S400 kit install for one of our first customers to order a kit since release!Absolutely thrilled with the fit and...
09/10/2026

An L5P S400 kit install for one of our first customers to order a kit since release!

Absolutely thrilled with the fit and finish we were able to achieve on these kits

A billet pedestal that performs and will hold up beyond the life of the truck

Thought out MAF placement so your tuner stays happy and the sensor isn’t needing replaced every other oil change

A dedicated 2020-2023 kit that is the only true bolt on 20+ L5P S400 kit to market (thats right, ZERO turbo kit modifications needed to run an S400 on your 20+ L5P)

-12 and -6 an oil lines to keep the expensive turbo in your valley happy

Every fl**ge and b**g port matched to maximum performance and efficiency

Want to give a huge thank you to everyone who supports and puts trust in our products. We couldn’t do it without you

To the people who have been patiently waiting for their kit, get your tools ready🤘

We are slowly building stock of the required components and dialling in suppliers. This means a 1-2 week lead time is coming very soon for these kits. Without comprising the full customizability and hand built aspect we have always retained😎

https://fkfab.com/products/2017-2023-l5p-duramax-s400-turbo-kit

Deleted✅Tuned✅2G swapped✅Chance dropped off his 23’ Cummins for some weight loss, a turbo kit and some dress up goodies-...
08/19/2026

Deleted✅
Tuned✅
2G swapped✅

Chance dropped off his 23’ Cummins for some weight loss, a turbo kit and some dress up goodies

-HP tuners ECM Unlock with full delete and 5” exhaust
-FKF 2019-2023 Cummins High Mount 2G Swap
-FKF 2019-2023 Cummins Coolant Tube (NEW PRODUCT RELEASE)
-FKF 2019-2023 Cummins Core Support Cover
-TNT 467 83x74 .9AR
-Kingspeed Valve Cover
-Pusher Intake Horn
-Fleece Grid heater Delete
-Vibrant Catch Can
-TC Calibrations ECM and TCM sauce

All coatings done by felderkustomkoatings
Colors shown-

Piping- Illusion Violet (this is a Color shifting Powder depending on how light is hitting it)

Alien Silver tags and clamps

In addition we have a new product release of the 2019-2024 Cummins Upper Coolant Tube

-Full 304 stainless
-TIG welded and back purged
-Aramid Couplers and Stainless T bolt Clamps

Thanks a ton for the business Chance! Chance Jasper

Have a unique color combination in mind? We can make it happen!Custom built every time to set your engine bay apart from...
08/08/2026

Have a unique color combination in mind? We can make it happen!

Custom built every time to set your engine bay apart from everyone else. With 10,000+ powder coat colors available the combinations are almost endless

In order-
01-10 Duramax S400 intake- Bronze Chrome + Victory Red

99-07 GM Fuse Box Cover- Illusion Purple + Polar White

L5P S4/S4 Kit- Illusion Lite Blue + Polar White

13-18 Dodge Rad Cover- Illusion Blueberry + Cran Raspberry

01-10 Duramax S400 Hotside- Bronze Chrome + Victory Red

5th Gen Cummins 2G swap- Illusion Violet + Alien Silver

L5P S400 Kit- Screamin Coral + Space Caramel

20+ GM Fuse Box Covers- Obsidian Black Base (Top- Rockstar Sparkle + Illusion Blueberry/ Bottom- Cat Yellow)

10-12 Cummins 2G swap- LP Blue + Polar White

L5P S400 Kit- Jamaican Teal + RS Sparkle + Polar White

5G Cummins 2G Swap- Extreme Purple + Obsidian Black

5G Cummins 2G Swap- Bronze Chrome + Obsidian Black

Cummins Dress up Parts- Bronze Chrome+ Chrysler Ceramic

High Mount Cummins Intake- Illusion Violet + Alien Silver

Traction Bars- Candy Purple + Kingsport Grey

LB7 S400 Kit- Corkey Pink + Polar White

NEW PRODUCT RELEASE2017-2023 L5P Single S400 Turbo Kit With a big batch of our billet pedestals soon to touch down we fi...
07/23/2026

NEW PRODUCT RELEASE

2017-2023 L5P Single S400 Turbo Kit

With a big batch of our billet pedestals soon to touch down we figured it would be a good time to make this post

After over a year of testing we are happy to release the L5P S400 kit

Key Features-

Billet twisted T4 pedestal with Waste-gate provision
-Locally CNC milled in North America from a block of steel for years or crack free use
-45mm Wastegate provision (can be sealed for non Wastegate use)
-Includes all required gaskets and stud kit
-option for high temp black cerakote

5” 6061 Aluminum Intake
-17-19 kits include a full ram air airbox
-20-23 intake kits will land the filter directly under ram air port
-Smart MAF placement for easy scaling with a 5” intake

3”-3.5” 6061 Aluminum Y bridge
-Billet Port matched 3” fl**ges
-Immediately expands to 3.5” before the split
-Integrated Billet MAP and NPT ports

3.5” 304 Stainless Steel Downpipe
-Direct bolt up to factory race pipe
-3.5” port matched fl**ge and tubing won’t choke out the S400 Turbine

3” 6061 Aluminum Hotside pipe
-2 piece design for ease of install and maintenance
-Clears ram air hood and majority of aftermarket CCV kits

20-23 guys. No more chopping up the hot side to make it fit or re pinning the VGT Fooler

These kits come with absolutely everything required to install an S400 based turbo on your 17-19 L5P

Current lead time is 6-10 weeks and dropping as we fulfill current orders and build stock on the billet pedestals. Kits are built to order and can be Powdercoated any colour or colour combination you can dream up

Kit is designed to work with an S400 based turbo as can be optioned with the kit. VS/PSR or similar will bolt up with minor modifications (let us know in the cart notes and we can make these modifications prior to shipping)

*please note kits will not come with vanjen clamps, all kits will include high quality 5 ply boots and clamps throughout the charge air system. Vanjens/V bands can be put in place if requested

Kits are live on the website- www.fkfab.com

20+ L5P compound turbo kit with both battery’s and factory alternator position👌Paired with a TNT S480 and follows suit f...
06/29/2026

20+ L5P compound turbo kit with both battery’s and factory alternator position👌

Paired with a TNT S480 and follows suit from our 17-19 kit. 3.5” cold and hot side crossovers, 3” Y bridge and 4” Downpipe so we don’t choke out that T6 Atmo Turbo

Also opted for a 3” hotside pipe and some dress up parts all coated to match in Wh***ey Bronze/Bengal Clear

Want to give a huge thank you to for dropping off his truck and bearing with us on this 20+ compound kit. Almost every component was redesigned from our 17-19 compound kit. We appreciate the business🤝

These kits will be available for purchase in the coming months

Address

Sylvan Lake, AB

Telephone

+15873771992

Website

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