This little guy does exactly what it sounds like – it holds the tail light bulb securely in place and provides the electrical connection to make it light up. It’s a pretty simple piece, but crucial. It receives power from your vehicle’s electrical system and passes it through to the bulb filament, completing the circuit. It’s part of the tail light assembly, obviously. Basically, everything that makes your tail lights work relies on a good connection here. Think of it as the gateway for the light. Without a functioning socket, the bulb won’t illuminate, even if the bulb itself is good. It's located right behind your tail light lens, so it's exposed to the elements a bit. Well, you’ll notice if one goes bad. Your tail light will suddenly be out, and that's a safety issue. A burnt out tail light means you’re less visible to other drivers, and potentially a ticket if a law enforcement officer spots it. The socket itself can corrode over time from moisture and vibration, losing that tight connection. Sometimes it's not the bulb that needs replacing, it’s this. You can find these pretty easily—we've got a good selection at Fixparts Online, and getting a new one is a relatively straightforward repair. It’s one of those things that’s inexpensive to fix before it becomes a bigger problem. Customer support you can rely on: Bulb Socket (MPN 63211387659) has a 12-month warranty!

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• Get parts made exactly for your BMW, so they fit and work perfectly. • BMW parts are designed to last, keeping your car running smoothly for years. • Using genuine BMW parts helps maintain your car's value. • You can trust the quality and performance of parts made by the same people who built your BMW. FixParts Online – Your Trusted Source for Quality BMW Auto Parts.