What should I check before buying a used engine?
Confirm the engine code rather than the model year, ask for the donor mileage and why the vehicle was scrapped, inspect photographs for leaks and missing ancillaries, and establish exactly what testing was carried out. Vague answers about testing are the clearest warning sign.
- Confirm the engine code in writing before paying
- Ask donor mileage and why the vehicle came off the road
- Check photos for leaks, corrosion and overheating
- Assume anything not pictured is not included
- Ask whether it was run or compression tested
A used engine can save a lot of money, but a few checks up front protect you from problems later. Here’s what to look for before you buy.
Mileage and history
Ask for the donor vehicle’s mileage and, where available, its history. Lower-mileage engines from well-maintained vehicles are the safest bet.
Visual inspection
Ask for clear photos or video. Look for oil leaks, coolant residue, corrosion, damaged sensors and signs of overheating. A clean, complete unit is a good sign.
Testing and specification
Confirm the exact engine code so it matches your vehicle. Ask whether the engine has been run or compression-tested and request any evidence.
Warranty and returns
Check what guarantee is offered and the returns policy before paying. Reconditioned engines typically carry a working guarantee.
Need help finding the right unit? Browse engines & transmission or send us the engine code.
Where this fits in
Buying and shipping used parts is a chain, and a mistake early on is expensive later. Identify the part properly with a part number, check condition honestly before paying, then pack and document it so it survives the journey — our packing checklist and paperwork guide cover the last two.
Other guides
- How to Import Used Car Parts from the UK: Step-by-Step
- Used vs Reconditioned vs Salvage Car Parts: The Difference
- How Container Consolidation Works for Car-Parts Export
Need this doing rather than explaining?
We do all of it weekly — sourcing, grading, packing and shipping. Browse used car parts, see export destinations, or send us your list and we will quote it.
Frequently asked questions
Everything you need to know about buying, selling and shipping car parts with LJ Auto.
What engine code do I need?
Your engine code confirms the exact unit for your vehicle. It’s usually stamped on the engine and listed in your vehicle documents — send it to the seller so they match the correct part.
Should I buy used or reconditioned?
For higher-mileage or critical repairs, a reconditioned engine with a guarantee offers more security; a good used engine is fine for many repairs and costs less.
Read next
Get a quote or a stock list
Tell us what you need — a single part, a vehicle or a full container — and we’ll come back with availability, pricing and shipping.