Collection: Used Ram Engines For Sale | Auto Power Source
shipment
Used Ram Engines For Sale
1,421+ verified used Ram engines in stock — 5.7L HEMI & 6.4L HEMI V8, 3.6L Pentastar V6, 4.7L/5.2L/5.9L Magnum V8s, 3.7L Magnum V6, plus the legendary 5.9L and 6.7L Cummins inline-six diesels and the 3.0L EcoDiesel V6. VIN-matched to your Ram 1500, Ram 2500/3500, Ram Power Wagon or Dakota, ASE-compression-tested, photographed before shipment, up to 3-year warranty plus 30-day money-back. Free freight nationwide.
Browse Ram Engines by Year
Year-specific Ram engines pages are coming online soon. In the meantime, text your VIN and our team will match the right year unit — usually within minutes during business hours.
Ram Engines We Cover
1,421+ Ram engines in our warehouse, every one VIN-matched, ASE-compression-tested, and photographed for your approval before shipment. Most-requested families:
Why Buy Ram Engines from Auto Power Source
Ram became a standalone Stellantis brand in 2009 but inherits the deep Mopar/FCA engine catalog — and Ram trucks remain the volume platform for the 5.7L HEMI, 6.4L HEMI, 3.6L Pentastar V6, and the legendary Cummins inline-six diesels. That broad lineup is great for parts availability but treacherous for swaps: the 5.7L HEMI in a 2009 Ram is mechanically distinct from a 2014 Ram unit, because the Eagle revision in 2009 added VVT and a different intake/cam profile. Cummins 5.9L (1998.5–2007) and 6.7L (2007.5+) share the family name but not parts, and the 6.7L brought EGR plus DPF on most years. Heavy-duty Rams (2500/3500) take the 6.4L HEMI on the gas side and the 6.7L Cummins on diesel — never interchange with the 5.7L light-duty unit.
Our 1,421+ Ram engines all come from low-mileage donor vehicles, cataloged by VIN, and held in our climate-controlled warehouse pending sale. Each unit clears our six-step process: VIN-matched to donor and target, ASE-certified compression test on every cylinder, leak-down evaluation, run-stand noise & smoke verification, full visual inspection of the long-block plus turbos and manifolds where present, multi-angle photographs sent for your approval, and palletized freight shipping. The Cummins diesels get extra checks: injector pump pressure, turbo shaft play, and grid-heater function.
You pay a fraction of dealer-new pricing for identical Stellantis / Mopar / Cummins engineering, ship free on a heavy-duty pallet to any address in the continental U.S., and you have 30 days from delivery to return for any reason — no restocking fees, no return freight charges. Up to a 3-year warranty covers you after install, and our six-step inspection has held our fitment-related return rate at 0% across 46,000+ shipments.
Your Ram Engine Options: Compared
Most Ram owners face four real choices when their engine fails:
| Option | Cost | Reliability | Warranty | Fitment Match |
|---|---|---|---|---|
| Used OEM (this collection) | $$$ Best Value | High | Up to 3 years | VIN-matched |
| New OEM (dealer) | $$$$$ 2-4× more | High | Manufacturer | Exact |
| Aftermarket / Reman | $$$$ | Varies | 6-12 mo | May adapt |
| Junkyard | $ Cheapest | Unknown | None | DIY |
Tested used OEM hits the sweet spot — same engineering as new, fraction of the cost.
Ram Engine Buying Guide
The 2008-09 split is the trap most Ram engine buyers fall into: Chrysler revised the HEMI mid-cycle with the Eagle update, and even within Pentastar production there are pre-2014 and post-2014 variants you should not interchange. Five checks before you order:
- Match the engine code by VIN 8th digit. On Ram VINs the 8th character is the engine code — get it from your title or door jamb sticker.
- For 5.7L HEMI: 2003-2008 (non-Eagle) vs 2009+ (Eagle with VVT). Pre-2009 and post-2009 HEMIs are not direct swaps in Ram trucks — the intake, heads, and cam timing all changed. Confirm year split before purchase.
- For Pentastar 3.6: 2011-2013 vs 2014+ revisions. The 2014 Pentastar revision addressed a cylinder-head/valve-seat issue. Most reputable sellers note which generation a given long-block came from.
- Cummins 5.9L vs 6.7L: completely different platforms. 5.9L 24-valve (1998.5-2007) and 6.7L (2007.5+) share the family name but not parts. The 6.7L brought EGR and DPF on most years — confirm DEF state and tune compatibility.
- 5.2L Magnum vs 5.9L Magnum (1994–2003) are not interchangeable. Different displacement, crank, and rod throws — confirm donor displacement against your truck. For HD Rams, the 8.0L V10 used a unique block and never shares parts with the Magnum V8s.
Our ASE-certified technicians verify every one of these points against your VIN before any engine ships.
Frequently Asked Questions
What is the warranty?
What does ASE-tested mean?
How long until delivery?
Can I see photos before I buy?
Do I need my VIN?
What if I do not approve the photos?
Why cheaper than dealer new?
When can I reach customer service?
Reviews
Our 6-Step Inspection & Shipping Process
Every unit we ship has been through these six steps:
What Our Customers Say
Rated Excellent by our customers on Trustpilot. Real reviews from our Trustpilot profile.
Our Photos-Before-Shipment Guarantee
Before any engine leaves our warehouse, we send you multi-angle photographs. You approve. If you do not approve, you get every dollar back — no questions, no restocking fees, no return freight charges. On top of 30-day money-back and up to 3-year warranty. Have a question about the guarantee or your specific order?
✉ Email Us at info@autopowersource.com