About Us
America's Trusted Source for Premium Used Engines & Transmissions.
Auto Power Source was built on one belief: every driver deserves a reliable, fairly priced powertrain — backed by real expertise, real accountability, and a warranty that actually means something.
Built on quality. Driven by trust.
We started Auto Power Source because we saw a market full of uncertainty — unreliable parts, vague warranties, and zero accountability after the sale. We decided to do it differently.
VIN-Matched Accuracy
Every part is cross-referenced against your vehicle's VIN to ensure a precise, compatible fit — no guesswork, no returns.
Certified Mechanic Inspection
Every engine and transmission is inspected, pressure-washed, and approved by certified mechanics before it ever ships.
Up to 3-Year Warranty
We stand behind every part we sell with one of the strongest warranties in the used powertrain industry — up to 3 full years.
Free Nationwide Shipping
We ship to all 50 states at no extra cost. Your part arrives fast, tracked, and ready to install.
A serious operation. Not a side hustle.
Behind every quote sits a full sourcing desk, a working warehouse, certified mechanics on the bench, and a freight team arranging palletized shipments to all 50 states.
We aren't a single yard with whatever happened to come in this week. Our sourcing network reaches across the country — so when a customer asks for a specific year, engine code, or transmission spec, we don't say "we don't have it." We find it.
Engines ready to ship.
OEM-quality used engines — tested, verified & ready for your vehicle. The cards below are a snapshot of in-stock units; our sourcing reach goes well beyond what's pictured here.
Transmissions ready to ship.
OEM-quality used transmissions — tested, verified & ready for your vehicle. Every unit you see is shift-tested in-house before it ever leaves our yard.
What sets Auto Power Source apart.
In an industry where trust is rare, we've built our reputation one satisfied customer at a time.
Ranked #2 on TrustPilot
Our TrustPilot ranking reflects thousands of real customer experiences — not marketing. We earn our reputation every single day.
Dedicated Expert Team
Our specialists — Catherine, Mike, Daisy, and Alan — are available to guide you from first inquiry to successful installation.
Photo Approval Before Shipping
We photograph every part and share it with you for approval before it ships. You see exactly what you're getting.
Real-Time Tracking
Once shipped, you receive a tracking number so you can follow your part's journey door to door — no wondering, no waiting in the dark.
30-Day Money Back Guarantee
If you're not satisfied within 30 days of purchase, we make it right — full refund, no runaround, no fine print.
Broad Inventory Reach
We source engines and transmissions across a vast network of verified suppliers — if we don't have it, we'll find it for you.
We cover every major make & model.
From American muscle to Japanese reliability to European performance — our sourcing network spans all major brands across all model years.
Don't see your make? Text us — we source for virtually every vehicle on the road.
We don't just sell parts. We get you back on the road.
From the moment you reach out to the moment your mechanic gives you the thumbs up, our team is with you. We follow up after delivery. We answer questions about installation. We make sure the job gets done right.
That's not just customer service — that's our standard. And it's why customers come back to us and refer their friends, family, and mechanics.
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Our team is ready to help.
Whether you need help identifying the right part, understanding your warranty, or tracking your order — we're one call or text away.
AutoPowerSource LLC · Family-Operated · United States · Mon–Sat · 8a–7p CT