Original BMW Timing Chain Tensioner O-Ring 7.1 x 1.8 for BMW 530i, 740i, 740iL, 840Ci, X5, and Z8 Alpina (1993–2003)

This 7.1 x 1.8 genuine BMW O-ring, part 07-11-9-906-361, seals the hydraulic timing chain tensioner on M60 and M62 V8 engines in the BMW 530i, 740i, 740iL, 840Ci, X5, and Z8 Alpina from 1993–2003. Because the tensioner runs on engine oil pressure, this seal keeps that oil where it belongs so the tensioner can work as intended. BMW names the part simply an O-ring and sizes it at 7.1 x 1.8. Each ring weighs 1 g. BMW has produced it since December 1991, and it is made in Italy. It is sold individually.

Original BMW Parts carry a 24-month parts warranty.

The same ring appears across two generations of BMW V8. BMW's parts data shows it on the M60 in the E34 530i, the E32 740i and 740iL, and the E31 840i. It also appears on the later M62 in the E38 740i and 740iL, the E31 840Ci, the E53 X5 4.4i and 4.6is, and the Alpina V8 in the E52 Z8. Because the tensioner seal is part of both engine families, one ring number covers M60 and M62 cars alike. Confirm which engine your car carries when matching other timing parts ordered alongside it.

Technical Details

• Manufacturer: BMW (genuine)
• Part number: 07-11-9-906-361
• BMW name: O-ring
• Size: 7.1 x 1.8
• Application: hydraulic timing chain tensioner seal
• Engines: M60 and M62 V8
• Weight: 1 g (0.04 oz)
• Production start: December 1991
• Country of manufacture: Italy
• Sold individually
• Warranty: 24 months on Original BMW Parts

Common Questions

What does this O-ring seal?
It seals the hydraulic timing chain tensioner on M60 and M62 V8 engines, allowing the tensioner to function properly.

What size is it?
BMW sizes this O-ring at 7.1 x 1.8.

Where is it made?
This genuine BMW O-ring is made in Italy.

A one-gram ring that keeps a V8 timing tensioner sealed is worth having on hand for any timing service.

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.