PartWise Guide library

Car parts buying and fitment guides

Use these guides to understand what information to gather, how to compare a listing with your vehicle, and when to stop and ask for confirmation.

Start here: If you already have a part in mind, begin with the compatibility checklist. It links the main checks together.
Compatibility

How to check car part compatibility before ordering

A step-by-step way to verify vehicle details, OE references and seller notes.

Part numbers

How to find an OE part number for your car

Practical sources for the number, plus how to handle replacements and supersessions.

VIN lookup

Buying car parts by VIN: benefits and limitations

What a VIN lookup helps identify and why a final manual fitment check still matters.

Part types

OE, OEM and aftermarket car parts: what the terms mean

Compare part labels, documentation, warranty terms and fitment evidence.

Buying online

Buying car parts online: a pre-checkout checklist

What to review before ordering, from vehicle fitment to returns and delivery.

Brakes

Choosing brake pads: fitment details to confirm

Check the brake configuration and exact references for safety-critical components.

How to use these resources

Vehicle catalogues, terminology, product availability and consumer rules can differ by country. Treat the exact vehicle documentation and the seller's current product details as the final references. If the evidence conflicts, do not guess.

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