What are the opening hours?

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

Allegiant Diesel & Auto

Home
United States
Three Rivers, MI
Allegiant Diesel & Auto

Call Directions Website Contact the business

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.
(1)

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!

10/30/2026

More goods!

• AMS Oil Dominator 2-Stroke Racing Oil (1 Quart Bottles)
• AMS Oil Interceptor 2-Stroke Oil (1 Quart Bottles)
• AMS Oil Gasoline Performance Improver
• AMS Oil Signature Series 5W-30 Oil (1 Quart Bottles / 1 Gallon Jugs)
• AMS Oil EAO17 Oil Filters as a Motorcraft FL500S replacement (Ecoboost applications)

Stop in and get your oil service today!

[email protected]
(269)506-6136

10/30/2026

What do you get when you do business with us? The correct parts you need in a pinch. Ready to go.

This LML Duramax blew apart it's up-pipe and instead of ordering the same factory pipe in a day from GM or ordering this quality product and waiting a week. We pull it off the shelf and it goes right onto your truck.

Fixed. For good.

10/29/2026

6.7 Cummins owners

We aren't selling you on parts you don't need. We are saving your wallet. 🤷🏽‍♂️ but what do we know.

10/28/2026

Good morning facebook!

Kicking things off with another complete vehicle inspection for our good friends over at Rose Roofing.

Repairing your roof in style 💥

10/26/2026

2011-Current 6.7 Powerstroke Fuel Fix!

Don't wait until you see flames... 🔥

Stop in today and pick yourself up this upgrade from whichever brand, we have them both. Don't want to install it yourself? Schedule an appointment with our service department and we'll get it done for you.

Already have one? We have the filters in stock that you need for service. No more waiting for your online order 📦

Do you really want your $80,000 truck catching on fire going down the road just because of some plastic? I don't think so!

[email protected]
(269)506-6136

📍53238 N US-131 Three Rivers, MI 49093

10/26/2026

S&B Silicone Body Mount Kit Install!

Goodbye rough ride!

10/26/2026

2004 Dodge Ram 3500 5.9
172K Miles

Cylinder head got sent out and reconditioned then clamped back down with ARP head studs on a new gasket.
This customer chose to upgrade to a BD Diesel exhaust manifold when we found this one was warped.

Back on the road she goes!

[email protected]
(269)506-6136

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 🫡

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

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.

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

http://allegiantdieselproducts.com/

Alerts

Be the first to know and let us send you an email when Allegiant Diesel & Auto posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.