🛠️ 5 Things to Know Before Buying a Used Engine or Transmission Online

If your vehicle needs a replacement engine or transmission, buying a used one can save you thousands of dollars — without sacrificing performance or reliability.

But before you place your order, here are 5 key things to know that will help you make a smart, confident purchase.

1. Used Doesn’t Mean Unreliable

Many people think “used” means worn out. The truth? Most used engines and transmissions on the market are pulled from low-mileage vehicles that were totaled in accidents but had perfectly good powertrains.

At Auto Power Source, every unit we sell is tested for compression, leaks, and performance before it's ever listed — and inspected again after your order is placed.

2. VIN Matching Is a Must

Not all engines or transmissions are interchangeable, even if they come from the same model year. One digit difference in your VIN can change everything.

That’s why we offer free VIN matching support — just send us your VIN, and we’ll match you with the exact part that fits your make, model, and trim.

3. Look for Warranty Coverage

Never buy a used engine or transmission without a warranty. If a seller won’t stand behind their product, that’s a red flag.

We back all our parts with warranties ranging from 6 to 36 months. If something goes wrong, you’re protected with a replacement or full refund — no surprises.

4. Pre-Installation Is Just as Important as Delivery

A properly tested part can still fail if it’s not installed correctly. That’s why we provide every customer with a Pre-Installation Guide that covers all the critical steps, like:

  • Replacing seals and gaskets
  • Flushing fluids
  • Cleaning intake ports
  • Transferring sensors and accessories

Skipping these steps can void your warranty, so we make it easy to get it right the first time.

5. Ask for Pictures Before Shipping

You should always know what you’re getting before it arrives. At Auto Power Source, once your part is removed and prepped, we send you detailed photos for approval.

✅ You approve it — we ship it.
❌ You don’t — we refund you 100%, no questions asked.

That’s transparency you can trust.

🚘 Ready to Get Back on the Road?

Whether you’re a DIYer, shop owner, or just someone trying to save money, buying a used engine or transmission shouldn’t be a gamble. It should be simple, secure, and backed by experts who care.

At AutoPowerSource.com, we make it easy — from VIN matching and real warranties to nationwide delivery and expert support.

Have a question?
Contact us now — we’re happy to help before and after the sale.

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