GJDiesel

GJDiesel Diesel Performance Perfected. Keeping Montana’s Diesels on the Road Since 1993. E-commerce store launching soon!

Expert repair, precision machining & performance parts for Power Stroke, Cummins & Duramax. G & J Diesel has been serving Billings, Montana and the surrounding area for over 20 years. We specialize in the Ford Powerstroke, GM Duramax and Dodge Cummins diesel trucks. From maintenance and repairs to power and performance,
G & J has the knowledgeable staff to assist you. G & J Diesel is also a direct

distributor of many of the products we sell. We offer an extensive line of products and services to meet all of your diesel automotive needs.

06/02/2026

HAPPY BIRTHDAY KYLER

Guess the FailureAlright, tech check. 🛠️ Who recognizes this plastic "snake" pulled out of a customer's truck, and what ...
06/01/2026

Guess the Failure
Alright, tech check. 🛠️ Who recognizes this plastic "snake" pulled out of a customer's truck, and what symptom did they roll into the shop complaining about?
Drop your guesses in the comments. 👇

05/29/2026
Some of these new guys will never understand the struggle…Back in the dark ages of wrenching, this was the shop light of...
05/21/2026

Some of these new guys will never understand the struggle…
Back in the dark ages of wrenching, this was the shop light of choice — also known as the forearm branding iron. 🔥😆
If you’ve ever rolled out from under a truck with a burnt arm, dropped this thing on your face, or left a little skin behind on the cage… congratulations, you’re a real mechanic.
These younger techs with their cool LEDs and rechargeable lights got it easy… and honestly, it shows. 😂

05/14/2026

HAVING FUN WITH ATS

When you ignore the problem long enough…you’re gonna end up driving these 😅
04/29/2026

When you ignore the problem long enough…
you’re gonna end up driving these 😅

An honor to support, a privilege to know. Scott McKinstry wasn't just a driver we sponsored; he was a teammate who helpe...
02/26/2026

An honor to support, a privilege to know. Scott McKinstry wasn't just a driver we sponsored; he was a teammate who helped our crew in more ways than we can count. Going into 'battle' at the track meant having Scott in our corner, and we couldn't have asked for a better partner. Rest in peace, Champ.

Address

1745 Main Street
Billings, MT
59105

Opening Hours

Monday 8am - 12pm
1pm - 5pm
Tuesday 8am - 12pm
1pm - 5pm
Wednesday 8am - 12pm
1pm - 5pm
Thursday 8am - 12pm
1pm - 5pm
Friday 8am - 12pm
1pm - 5pm

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