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Monday 9am - 6pm Tuesday 9am - 6pm Wednesday 9am - 6pm Thursday 9am - 6pm Friday 9am - 6pm

100% Diesel LLC

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United States
Morristown, TN
100% Diesel LLC

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Come experience the difference for your next Diesel upgrade or service at 100% Diesel LLC!
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10/13/2026

Here’s one of our LML Allison 750HP 6speed builds we just finished up with for one of customers. Yeah we know White won’t stay clean forever, but it looks good for the photos and that’s what the customer wanted so that’s what we did! 💯🇺🇸
We gave it some Goerend Transmission Inc. love with a Billet DK triple disc converter, a Billet C3 oiling PTO covers, Billet C2 clutch hub. Raybestos Powertrain GPZ clutches and boosted the line pressure up for more holding power. We always like to add a PPE deep trans pan to add extra trans fluid to help keep the trans cool for when he’s towing or having fun!

10/13/2026

PSA!! Look at how bad this boost pressure sensor was clogged with soot. For all L5P owners this is definitely something worth checking on your truck. This is one of those small things that can drastically help to improve fuel MPG⛽️ along with checking your air filter and removing and cleaning your Mass air flow sensor. After removing and cleaning the MAP/ boost pressure sensor with CRC Industries NZ, we like to install S&B Filters MAP sensor spacer. This helps keep the sensor clean for better readings and better fuel mileage, paired with a new Air filter.

11/11/2025

We would like to extend our sincere gratitude to all current military personnel and veterans for their service. Freedom is not free, and it requires a special individual to make the selfless decision to serve one's country and fellow citizens. Thank you again, and may God bless you and God bless America. 🇺🇸🇺🇸

01/19/2025

We've been busy wrapping up projects from last year. We've also busted into 2025 with plenty of trucks to repair and improve!! 💯💯

Stage 2 Built 68RFE with custom in house trans lines to bypass the stock thermal bypass.

In house 5.9 Cummins rebuild.

Installed a couple of upgraded Banks grid heater kits with upgraded Intake horns with screw in style intake heater!

Also putting a HD series Fleece Cylinder head on 6.7 Cummins to help it breath better!

Also installed a Valair dual disc organic quite clutch in a 18 Ram 3500 G56 ready for the up coming camping season.

Thank you to all of our Loyal customers with continued support and we look forward to helping all of our new customers this year! 🇺🇸🇺🇸

10/24/2023

Larry Leach

Sale is Valid thru October 31 2023:
30x30x11 Garage
2-8x8 Garage doors
1- 10x10 garage Door
1- Walk in door
2- 30x36 windows
colored screws
$12,754.25 plus Tax

Jefferson City Lot- 423-300-8241
Newport Lot- 423-608-7303

08/08/2023

07/04/2023

🇺🇸🇺🇸God Bless America!!! 🇺🇸🇺🇸We will be closed the rest of the week. We’ll be back in the shop on the 10th. Thank you to all our great customers that support us have an Awesome 4th of July. 💯💯

Address

480 Jarnigan Avenue
Morristown, TN
37813

Opening Hours

Monday	9am - 6pm
Tuesday	9am - 6pm
Wednesday	9am - 6pm
Thursday	9am - 6pm
Friday	9am - 6pm

Telephone

+14236160600

Website

http://100Diesel.com/

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