Original BMW Exhaust Manifold Stud M7x39 for BMW 1, 2, 3, 4, 5, 6, and 7 Series, X1, X3, X4, X5, X6, Z4, M2, M3, and M4 (2006–2021)

This Original BMW exhaust manifold stud is the M7x39 stud bolt that locates the exhaust manifold on the cylinder head of BMW 1 through 7 Series, X, Z4, and M models built from 2006 through 2021. The stud threads into the head and passes through the manifold flange, and a nut on its outer end clamps the flange against the gasket. BMW calls it a stud bolt and specifies an M7 thread with a 39 mm overall length. Each stud weighs about 1 gram, and production of this number began in December 2008. It is made in Germany and sold individually, so order one for every position you plan to replace.

Original BMW Parts carry a 24-month parts warranty.

Part number 11-12-7-593-376 supersedes the earlier 11-12-7-521-168. BMW marks that change as exchangeable retrospectively, so the current stud also suits cars built before December 2008 that left the factory with the older number. BMW's parts data places it on the N51, N52, N52N, N53, N54, N55, N20, N26, and S55 engine families. Because the stud and its nut sit right at the exhaust port, they go through a full heat cycle every time the engine warms up and cools down.

Technical Details

• Manufacturer: BMW, made in Germany
• Part number: 11-12-7-593-376
• Supersedes 11-12-7-521-168, exchangeable retrospectively
• BMW name: stud bolt
• Thread and length: M7 x 39 mm
• Weight: about 1 g (0.04 oz)
• Production start: December 2008
• Sold individually
• Warranty: 24 months

Installation & Tuning Notes

Exhaust manifold studs live with constant heat cycling and should be replaced whenever they are removed.

Common Questions

Will this stud replace 11-12-7-521-168?
Yes. BMW lists this number as the replacement and rates the change as exchangeable retrospectively.

Is this sold as a set?
No. Each stud is sold individually, so count the studs at each manifold before ordering.

Fitment & Compatibility

Confirm your model year and submodel against the table below before ordering. PMB Performance has spent over 20 years matching parts to vehicles and can verify this against your VIN.