Original BMW P21W Bulb Socket for BMW E30 3 Series, E34 5 Series, and E32 and E38 7 Series (1984–2001)

Built to take a P21W bulb, the Original BMW 63-21-8-355-883 is a bulb socket that holds and powers a lamp in the lighting units of the E30 3 Series, E34 5 Series, and E32 and E38 7 Series, covering 1984–2001 models. A bulb socket locks the bulb into its housing and carries current to the bulb's contacts, so a worn or loose socket can make a good bulb flicker or stay dark. This one weighs 8 g and is made in Germany. BMW's parts data shows production of this number starting in January 1991. Owners of earlier E30 cars therefore receive the later-production socket, which BMW has kept as the part for those models.

Original BMW Parts carry a 24-month parts warranty.

The socket's main value is how many cars share it. BMW uses this one P21W number across four chassis generations, from the M20-powered E30 325e through the V12 E38 750iL. That simplifies stocking a spare for more than one car in the garage. BMW does not tie the socket to one lamp position in its parts data. Before ordering, compare the socket in your lamp with the photo and confirm it takes a P21W bulb.

Technical Details

• Manufacturer: BMW, Original BMW part
• Part number: 63-21-8-355-883
• BMW part name: bulb socket
• Bulb type: P21W
• Weight: 8 g (0.28 oz)
• Production start: January 1991
• Made in Germany
• Sold as a single socket
• Warranty: 24 months on Original BMW Parts

Common Questions

What bulb does this socket take?
BMW rates it for a P21W bulb.

Will it fit my 1985 325e even though production started in 1991?
Yes. The 325e from 1984–1987 is part of this socket's fitment, and the later production replaces what those cars came with.

Where is it made?
This socket is made in Germany.

Fitment & Compatibility

Use the fitment table below to confirm year, model, submodel, and application notes before ordering. Send your VIN and PMB Performance will confirm the fit, drawing on more than 20 years in the trade.