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Tested Used Cummins Diesel Engines – Built for Durability

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Tested & Inspected

Tested Used Cummins Diesel Engines – Built for Durability

The most reliable diesel engine ever built — compression tested Cummins engines with real photos. 12 Valve, 5.9, and 6.7 available.

  • Tested & Inspected Engines
  • Low Mileage Options Available
  • 3 Year Warranty (Transferable)
  • Actual Photos Before Shipping
  • Fast US Shipping (3–4 Business Days)
Get Free Quote Now Call: 1-888-235-7861
3 Year Warranty
Complete coverage
Real Photos First
Your exact engine
3–4 Day Delivery
Nationwide shipping
Tested & Inspected
Compression tested
4.9 / 5 Rating
2,400+ customers
Quote in 60 Secs
Fast response team
Why Choose Us

Cummins: The Gold Standard in Diesel Reliability

Cummins diesel engines are renowned as the most reliable and longest-lasting diesel powerplants available. The legendary 12-valve 5.9, the high-output 24-valve 5.9, and the modern 6.7 Cummins are all available in tested, low-mileage condition. Our Cummins engines are compression tested and shipped with actual photos before purchase.

12V, 24V & 6.7 Available
All three main Cummins diesel variants in stock.
500,000+ Mile Potential
With proper maintenance, Cummins engines regularly exceed 500K miles.
Towing Powerhouse
Maximum torque for heavy-duty towing and work truck applications.
Cummins Diesel Engine engine
Actual Photos
Sent Before Shipping
Included With Every Engine

What's Included With Your Cummins Diesel Engine

Tested Cummins long block
Injection pump (12V) or injectors
Head and head gasket set
Compression test report
Real photos before shipping
3-year warranty
Gear train assembly
All variants: 12V, 24V, 6.7
Simple Process

How It Works

From quote to delivery in 4 easy steps. No guesswork, no surprises — just a tested engine at your door.

Step 01

Submit Your Details

Fill in your vehicle year, make, model, and the engine you need. Get an instant free quote in under 60 seconds.

Step 02

We Send You Real Photos

We confirm inventory and send you actual high-resolution photos of your exact engine — not stock images.

Step 03

Approve & Secure Payment

Review the photos, approve the engine, and complete your secure payment. We prepare for immediate shipping.

Step 04

Fast Delivery to Your Door

Your tested engine ships within 24 hours and arrives in 3–4 business days with full tracking information.

Compatible Vehicles

Compatible Vehicles for the Cummins Diesel Engine

Not sure if this engine fits? Call us or submit a quote — we guarantee fitment.

Dodge Ram 2500 (1989–2023)Dodge Ram 3500 (1989–2023)Ram 2500 / 3500 (2010–2023)Dodge Ram 4500 / 5500Freightliner Sprinter (OM642)Industrial / marine applicationsAgricultural equipmentCustom diesel builds
Customer Reviews

What Our Customers Say

4.9 / 5 from 2,400+ reviews

Bought a 5.3 LS from Auto Store Studio. Got photos before shipping and the engine was exactly as described. Compression tested and runs perfectly. Could not be happier!

Michael T.
Texas • 5.3 LS Vortec

The 5.7 Hemi I ordered for my Ram 1500 arrived in 3 days. It was packaged extremely well and looked brand new inside. The 3-year warranty gave me peace of mind.

Carlos R.
Florida • 5.7 Hemi

Finding a clean 7.3 Powerstroke is tough. These guys had exactly what I needed, sent me photos within an hour, and it was at my shop in 4 days. Top notch service!

Dave W.
Ohio • 7.3 Powerstroke

Got a K24 for my Accord project. The engine had low miles and they sent a full compression test report. Dropped right in. Will buy from them again for sure.

Jessica M.
California • K24 Honda

Needed a 6.4 Hemi for my Challenger. The team was responsive and professional. Engine shipped fast and runs like new. Highly recommend Auto Store Studio.

Brandon S.
Georgia • 6.4 Hemi

The 5.0 Coyote I got was spotless. Real photos before purchase, honest communication, and fast delivery. Exactly what the automotive industry needs more of.

Tom K.
Tennessee • 5.0 Coyote
FAQ

Cummins Diesel Engine – Frequently Asked Questions

The 12-valve (6BT) is simpler, more mechanically robust, and beloved for its reliability and easy tuning. The 24-valve (ISB) offers more power and modern features. Both are exceptional engines.

Ready to Get Your Tested Cummins Diesel Engine?

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