Buyer guides
Used engine & transmission guides
Straight answers to the questions our parts desk hears every day: fitment, mileage, installation and what to look for before you buy.
How to Match a Used Engine or Transmission to Your VIN
Where to find your VIN, what the digits mean for engine and model year, and the details to send for an exact-fit used engine or transmission.
5 min read
Used vs. Rebuilt vs. Remanufactured Engines: What Is the Difference?
A plain-English comparison of used OEM, rebuilt and remanufactured engines and transmissions: what each one is, typical cost and what to ask before you buy.
6 min read
Before You Install a Used Engine: A Mechanic's Checklist
What to replace, transfer and check before installing a used engine or transmission, so it runs right and your warranty stays valid.
6 min read
7 Signs Your Transmission Is Failing (and What to Do Next)
Slipping, delayed shifts, burning smell and other warning signs of a failing automatic transmission, plus when a used replacement makes sense.
5 min read
What Mileage to Expect on a Used Engine or Transmission
Typical mileage on used OEM engines and transmissions by vehicle age, based on the units DriveCore has actually quoted, and how to ask for low miles.
4 min read