Genuine, OEM & Aftermarket Parts Explained

What the labels generally mean

Genuine parts are sold under the vehicle manufacturer’s brand. An original-equipment supplier may also sell parts under its own name, but that does not establish that every part it sells is identical to the genuine-branded application.

OEM is used inconsistently in advertising. Ask what the workshop means instead of accepting the label as proof. Aftermarket describes parts supplied outside the vehicle manufacturer’s branded channel and includes products of widely varying specification.

Questions that help you compare

• Which manufacturer and part number are proposed?
• How has compatibility with my model, year and fitted equipment been checked?
• Is the item new, remanufactured or used, and is that stated clearly?
• What traceability and written warranty terms accompany it?

Avoid assumptions about availability or suitability

A lower price alone does not prove a part is unsuitable, and a familiar supplier name alone does not prove it meets every requirement. Safety-critical or application-sensitive components require particular care, including compatibility with any coding or calibration requirements.

This explanation is not a claim that Selective Promech stocks every category or sources every part directly from the manufacturer. The proposed supply should be confirmed on the estimate for your job.

Questions about this topic