Original BMW Brake Booster Vacuum Pump O-Ring 48 x 2.5 mm for BMW 550i, 650i, 750i, M5, M6, X5, X6, and XM (2008–2024)

Measuring 48 x 2.5 mm, Original BMW O-ring 07-11-9-906-090 seals the brake booster vacuum pump to the back of the valve cover on BMW 550i, 650i, 750i, M5, M6, X5, X6, Alpina, and XM models from 2008–2024. The vacuum pump supplies the suction the brake booster uses to multiply pedal effort. This O-ring seals the vacuum pump to the back of the valve cover. The ring weighs 1 g (0.04 oz), is made in Italy, and is sold as one piece.

Original BMW Parts carry a 24-month parts warranty.

BMW gives the size as 48X2,5, which is 48 x 2.5 mm. Production started in July 2008, and BMW uses the ring on its twin-turbo V8 family: the N63, N63N, N63R, and N63B, plus the S63, S63N, S63R, and S63M in the M cars. Vacuum pumps and their related hoses can crack and leak with age.

Technical Details

• Manufacturer: BMW (genuine)
• Part number: 07-11-9-906-090
• BMW part name: O-ring
• Size: 48 x 2.5 mm
• Weight: 1 g (0.04 oz)
• Production start: July 2008
• Sold individually, one piece
• Made in Italy
• Warranty: 24 months

Common Questions

What size is this O-ring?
It is 48 mm by 2.5 mm.

Does it fit a six-cylinder X5 or X6?
No. On the X5 and X6 it fits only the V8 trims shown in the fitment.

Where does it seal?
It seals the brake booster vacuum pump to the back of the valve cover.

Fitment & Compatibility

Compare your production year and trim against the table below. Send your VIN and PMB Performance will confirm the fit, drawing on more than 20 years in the trade.