Original BMW Left-Side Turn Indicator Lamp Bulb Socket, Front, Fits BMW E46 325i, 325xi, 330i, and 330xi (2001–2005)

For E46 owners dealing with a dead or flickering front left signal, the Original BMW 63-13-6-943-121 is the left turn indicator bulb socket that holds and powers the front left turn signal bulb on the 2001–2005 BMW 325i, 325xi, 330i, and 330xi. Bulb sockets can corrode from moisture and road exposure. A corroded connector can make the turn signal malfunction and cause new bulbs to burn out quickly, so replacing the socket fixes the cause instead of just the bulb. Signs of a failing socket include an intermittent or dead signal, a burnt or melted socket housing, and dim or flickering operation from corrosion or moisture. The socket weighs 17 g and is made in Spain.

Original BMW Parts carry a 24-month parts warranty.

This socket is for the left side only. BMW's parts data shows production of this number from August 2003. Cars built before then receive this later socket as the current replacement. One number covers both the rear-drive and xi all-wheel-drive cars here.

Technical Details

• Manufacturer: BMW, Original BMW part
• Part number: 63-13-6-943-121
• BMW part name: left turn indicator lamp bulb socket
• Position: front, left side
• Weight: 17 g (0.6 oz)
• Production start: August 2003
• Made in Spain
• Sold as a single socket
• Warranty: 24 months on Original BMW Parts

Common Questions

Why do my new turn signal bulbs keep burning out?
A corroded socket connector can cause new bulbs to burn out quickly and the signal to malfunction. Replacing the socket addresses that cause.

Does this fit the right side?
No. BMW makes this socket for the left turn indicator only.

What symptoms point to a bad socket?
An intermittent or dead signal, a burnt or melted housing, and dim or flickering operation from corrosion are the common signs.

Restore a reliable front signal on your E46 with the factory BMW socket.

Fitment & Compatibility

Use the fitment table below to confirm year, make, model, submodel, and any notes tied to your exact vehicle. Pay close attention to engine, chassis, position, and option-specific details before ordering. PMB Performance can confirm this against your VIN, backed by more than 20 years of parts and fitment work.