John C Garage

John C Garage Specializing in high quality Duramax Parts! We also sell Cummins and Powerstroke parts too.

Our main priority is having parts in stock and being able to ship orders as soon as possible!

We are all caught up on our S369 L5P turbo orders as of today! We have two left from this last round ready to go šŸ‘ŠšŸ¼ No l...
06/01/2026

We are all caught up on our S369 L5P turbo orders as of today! We have two left from this last round ready to go šŸ‘ŠšŸ¼ No lead time on those, just sayinnn šŸ˜ÆšŸ˜Æ

Fluidampr recommends to pin the damper to the crankshaft on Chevy/GM 6.6L Duramax diesel engines so they put together th...
05/28/2026

Fluidampr recommends to pin the damper to the crankshaft on Chevy/GM 6.6L Duramax diesel engines so they put together this kit! The kit includes press fit steel dowel pin, drill bit, and drill fixture for accurate alignment.

Features and Benefits

Secure mounting.
Recommended for Chevy/GM Duramax 6.6L

We now have inventory on hand to get these out with the dampers or if you have a damper already the kit can be sold by itself.

https://www.johncgaragepa.com/product-page/fluidampr-2001-chevy-gm-duramax-6-6l-damper-drill-pin-kit-300019

ALL-NEW, intake horn and grid heater kit for the 6.7L Cummins!! From the #1 trusted name in diesel performance comes t...
05/27/2026

ALL-NEW, intake horn and grid heater kit for the 6.7L Cummins!! From the #1 trusted name in diesel performance comes the most complete kit available to address the OEM grid heater nut nightmare. The direct replacement, factory appearing intake horn and high-flow intake plate increase overall engine airflow and replace the OEM style grid heater with a robust coil heating element. For our cold weather customers who experience sustained temperatures below 23Ā°F (-5Ā°C), our cold weather kit adds an additional heating element ā€“ together this combination provides for proven startability down to -35Ā° Celsius! Protect your investment with confidence with the latest from Fleece Performance.

https://www.johncgaragepa.com/product-page/2007-5-2024-cummins-6-7l-fleece-performance-intake-and-grid-heater-kit

We have added 2024 and 2025 to our Can Bus offerings for the Duramax L5P which we have in stock and will continue to kee...
05/26/2026

We have added 2024 and 2025 to our Can Bus offerings for the Duramax L5P which we have in stock and will continue to keep on hand at all times. The two plugs for these years replace the DEF tank module.

I have an older y bridge kit available that I recently found while doing inventory!The y bridge and passenger side inter...
05/15/2026

I have an older y bridge kit available that I recently found while doing inventory!

The y bridge and passenger side intercooler pipe are illusion purple with the horn being semi gloss black powder coat. Everything shown in the first photo is 100% brand new items.

If you want a more complete kit, we can add intake/airbox, driver side intercooler pipe, up pipe, down pipe, etc.

Base kit includes,

High flow y bridge (illusion purple)
Passenger side intercooler pipe (illusion purple)
Coolant reroute kit
High flow intake horn (semi gloss black)
Silicone boots / clamps / Hardware

$1350 shipped within the U.S.

Any John C Garage LS fans? Not sure which is quicker, our single cab L5P or this 668HP Blackwing šŸ¤”
05/11/2026

Any John C Garage LS fans? Not sure which is quicker, our single cab L5P or this 668HP Blackwing šŸ¤”

Anyone on the fence about purchasing a S400/VGT compound kit for the 2011-2016 Duramax LML? We have two new kits that we...
05/07/2026

Anyone on the fence about purchasing a S400/VGT compound kit for the 2011-2016 Duramax LML? We have two new kits that we are looking to move at a discounted rate! Colors to choose from are,

Illusion cherry (example in photo)
Gloss white
Kingsport gray
Illusion purple

If I can find two candidates at a minimum, Iā€™m offering $200 per kit discount which these never go on sale.

Again, these are brand new. I have a kit on my personal 2016 and love it. Normally $3849, price will be $3649. No lead time on these. The powder coat colors listed above are in stock.

Website below to full details on the kit. Pricing has already been discounted. No discount code needed. This upfront lower cost will apply to the first two orders we receive.

https://www.johncgaragepa.com/product-page/2011-2016-duramax-lml-s400-stock-compound-installation-kit-no-turbo

Address

Philadelphia, PA

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

Telephone

+12676634201

Website

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