Original BMW Flywheel ISA Screw M12x1.5x19 for BMW 1, 2, and 3 Series, X1, X3, X4, X5, X6, and Z4 (2007–2019)

Original BMW ISA screw 11-22-7-522-125 is the M12x1.5x19 fastener that clamps the flywheel or flexplate to the crankshaft on N20, N26, N54, and N55 engines in BMW 1, 2, and 3 Series, X1, X3, X4, X5, X6, and Z4 models (2007–2019). BMW specifies a fine M12x1.5 thread with a 19 mm length, and each screw weighs 40 g. On these applications the screw is identified as a flexplate screw, the fastener that holds the automatic transmission drive plate to the crankshaft flange. It is made in the Czech Republic. Bolts in this joint clamp the drive plate or flywheel to the crank and carry the engine's torque on its way to the transmission.

Original BMW Parts carry a 24-month parts warranty.

This number entered production in March 2004 and took over from the earlier 11-22-7-508-666. BMW marks that change as not exchangeable retrospectively, so the newer screw is not approved as a direct substitute in every vehicle that was built with the older number. For the turbocharged and four-cylinder engines covered here, 11-22-7-522-125 is the current factory screw. BMW's part name carries the full thread and length callout, M12x1.5x19, which makes it simple to match against the hardware you have on the bench. BMW supplies it as a single piece.

Technical Details

• Manufacturer: BMW (Original BMW part)
• Part number: 11-22-7-522-125
• BMW part name: ISA screw, M12x1.5x19
• Thread: M12x1.5, 19 mm length
• Weight: 40 g (1.41 oz)
• Production start: March 2004
• Replaces 11-22-7-508-666; BMW notes the change is not exchangeable retrospectively
• Made in the Czech Republic
• Sold as a single piece
• Warranty: 24 months

Common Questions

What size is this screw?
BMW specifies an M12x1.5 thread with a 19 mm length, and the screw weighs 40 g.

Does it replace 11-22-7-508-666?
Yes, it superseded that number, but BMW marks the change as not exchangeable retrospectively, so older applications should be checked by VIN.

Is it for a flywheel or a flexplate?
On these models the screw is identified as a flexplate screw, which secures the automatic transmission drive plate to the crankshaft.

Fitment & Compatibility

Use the fitment table below to confirm year, model, submodel, and application notes before ordering. PMB Performance has spent over 20 years matching parts to vehicles and can verify this against your VIN.