Genuine vs OEM vs Aftermarket

The same BMW part can come in three kinds of box. Here's what each one means, and how to pick.

Genuine BMW

Sold in BMW packaging under BMW's own part number, the 11-character number in BMW's parts catalog. It's what a BMW dealer's parts counter sells.

OEM

OEM means original equipment manufacturer: a company that makes parts BMW uses, such as a filter, coil or pump maker, selling that kind of part in its own box under its own part number. On our part pages you'll see both numbers: the maker's number and the BMW numbers it replaces.

Aftermarket

Made by a company that doesn't supply BMW with that part, built to fit and work in its place. Quality and price range widely from brand to brand.

OE

OE means original equipment: the part your BMW was built with at the factory. An OE number is the carmaker's own part number, so for a BMW it's the 11-character BMW number. When a listing says "OE number" or "replaces OE", it's pointing at that BMW number, not at a brand. OE tells you which part it is. Genuine, OEM and aftermarket tell you who made the one in the box.

How to pick

• Match the part number first. Our part pages list the BMW numbers each part replaces.
• Pick the brand you trust at the price that works for the job. Every part carries its maker's warranty.
• Not sure? Send your VIN on Fitment Check and ask. We'll tell you what fits.

Browse Genuine BMW and OEM or aftermarket parts.