Allegiant Diesel & Auto

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Allegiant Diesel & Auto Contact information, map and directions, contact form, opening hours, services, ratings, photos, videos and announcements from Allegiant Diesel & Auto, 53238 US/131, Three Rivers, MI.
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AMS Oil, Schaeffers, Fleece, S&S, Exergy, Thoroughbred Diesel, KC Turbos, FASS, Suncoast, Industrial Injection, Hamilton Cams, Dynomotite Diesel, BD Diesel, Airdog, Merchant Auto, PPE, S&B Filters, Powerstop, products dealer and more!

Efficiency. Finished up all the engine jobs and scheduled work just in time to wash up the floors and get organized befo...
10/23/2026

Efficiency.

Finished up all the engine jobs and scheduled work just in time to wash up the floors and get organized before the next batch.

Everyone have a great weekend and enjoy the weather!

Until Monday 🫡

LLY Duramax Top End Upgrade!- New GM cylinder heads- Merchant Automotive top end gasket kit- ARP head studs- New exhaust...
10/22/2026

LLY Duramax Top End Upgrade!

- New GM cylinder heads
- Merchant Automotive top end gasket kit
- ARP head studs
- New exhaust manifolds
- Thoroughbred Diesel fuel injectors
- New injector return lines
- Fleece Performance high pressure fuel lines
- PPE up-pipe, gaskets, and hardware
- S&B Filters cold air intake

Complete top end rebuild and back to work it goes!

[email protected]
allegiantdieselproducts.com
(269)506-6136

2015 GMC Sierra 2500HD Truck came in all torn apart from the customer snapping bolts off in the turbocharger and exhaust...
10/22/2026

2015 GMC Sierra 2500HD

Truck came in all torn apart from the customer snapping bolts off in the turbocharger and exhaust manifold.

Getting him all fixed up with a PPE downpipe, PPE up-pipe, and new exhaust manifold.

• Charging system / CAN diagnostics Truck came in with a ton of fault codes in the history. Technician found that during...
10/21/2026

• Charging system / CAN diagnostics

Truck came in with a ton of fault codes in the history. Technician found that during a rock light install someone drilled through the PCM harness and damaged 11 wires.

General service and repair! We aren't just big turbos and engine builds. We service it all... brakes, steering, suspensi...
10/21/2026

General service and repair!

We aren't just big turbos and engine builds. We service it all... brakes, steering, suspension, oil/filter changes, you name it.

Get ahold of us today and lets get that complete inspection done. Protect that investment!

Is your truck clunking on unlevel ground or large bumps in the road? Does it not seem to ride like it used to? Well your...
10/20/2026

Is your truck clunking on unlevel ground or large bumps in the road? Does it not seem to ride like it used to?

Well your body mounts may look like this. If they are still there...

Upgrade to the S&B silicone body mount kit and get your ride back!

[email protected]
(269)506-6136

AMS Oil Products• Polaris and Can-Am oil change kits• Polaris and Can-Am Powertrain Fluid for transmissions and differen...
10/20/2026

AMS Oil Products

• Polaris and Can-Am oil change kits
• Polaris and Can-Am Powertrain Fluid for transmissions and differentials

•100% Synthetic Gear L***s (1 quart packs)

75W-90, 75W-85, 80W-90, 75W-140

Don't forget to service those differentials with your transmission on your vehicles and machines! Quick, simple, and will save you a lot of money in the future.

Good morning to all of our followers on this crisp Tuesday morning! Who else is stretching the legs on the classic befor...
10/20/2026

Good morning to all of our followers on this crisp Tuesday morning!

Who else is stretching the legs on the classic before ❄️?

PowerStop Extreme Carbon Fiber Ceramic Z36 Brake Pad SetsIN STOCK! Front & RearCurrent Applications • 2012-2022 F250/F35...
10/19/2026

PowerStop Extreme Carbon Fiber Ceramic Z36 Brake Pad Sets
IN STOCK!

Front & Rear

Current Applications
• 2012-2022 F250/F350 SRW/DRW
• 2011-2019 GMC/Chevrolet 2500/3500 SRW/DRW
• 2009-2018 Ram 2500/3500 SRW/DRW

Need a set we don't have? Need rotors too? Shoot us a message today!

[email protected]
(269)506-6136

2018 Ram getting switched over to Schaeffer's this morning!
10/17/2026

2018 Ram getting switched over to Schaeffer's this morning!

Address

53238 US/131
Three Rivers, MI
49093

Opening Hours

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

Telephone

+12695066136

Website

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