BMW Copper Collar Nut for 5/6/7/8 Series & M5 & X5 & Z8 (1988–2010)

Replace the factory copper collar nut on BMW 5/6/7/8 Series & M5 & X5 & Z8 from 1988–2010 with this Original BMW part. It secures the matching threaded fastener at the specified assembly. The supported range includes 530i, 545i, 550i, 645Ci, 650i, and 740i, plus additional listed variants. BMW’s U.S. warranty coverage for Original BMW Parts is two years with unlimited mileage.

Technical Details

• Component: Copper Collar Nut
• Manufacturer part number: 18-10-7-523-805
• Primary function: secures the matching threaded fastener at the specified assembly
• Vehicle applications: BMW 5/6/7/8 Series & M5 & X5 & Z8
• Production range: 1988–2010
• Manufacturer: BMW
• Listed models: 530i, 545i, 550i, 645Ci, 650i, and 740i, plus additional listed variants
• Listed submodels: 4.4i, 4.6is, and 4.8is

Fitment & Compatibility

Match the vehicle to the fitment table below before installation, paying attention to submodels and notes. Confirm the exact installation location, vehicle equipment, and production date. PMB Performance has more than 20 years of experience matching European vehicle parts; send us your VIN if you need help confirming fitment.