Guides
Fitment questions, answered in plain terms. No sign-up, nothing to buy.
How to read a Partslink number
Nine characters name the vehicle maker, the type of part and the individual part. Here is how to take one apart.
CAPA certified parts, explained
What the certification seal on an aftermarket part means, and when it is worth asking for.
Left or right: which side is which
Driver side, passenger side, LH and RH, settled in a minute.
Test fit before paint
How to check an aftermarket bumper cover or fender on the car before the paint booth makes it yours.
Halogen, HID or LED: ordering the right headlight
How to tell which headlamps your car was built with, and why the three do not swap.
What a VIN can and cannot tell you
What the 17 characters say about a vehicle, position by position, and what they leave out.
What is a cowl tag?
The stamped plate on a classic GM firewall, how to read one, and why we took the name.