BMW One-Piece Crank Hub With Bolt Capture - MMR Performance MMR-MMR201003FK

The MMR Performance One-Piece Crank Hub with Bolt Capture (MMR-MMR201003FK) is an essential upgrade designed to prevent the notorious "spun crank hub" failure found in BMW N55 and S55 engines. This meticulously engineered component replaces the problematic multi-piece, friction-dependent factory hub with a robust one-piece design, eliminating a critical weak point in your engine's timing system.

Beyond its solid construction, this crank hub features an integrated bolt capture mechanism. This innovative design ensures the crank hub bolt remains securely fastened under all conditions, preventing it from backing out and safeguarding your engine from potentially catastrophic damage, especially in high-performance or tuned applications.

Crafted from premium materials for superior strength and durability, the MMR Performance One-Piece Crank Hub provides enhanced reliability, precise timing, and unwavering power delivery, offering invaluable peace of mind for any BMW enthusiast.

**Part Number:** MMR-MMR201003FK

**Fitment:** Designed for a wide array of BMW models equipped with the 3.0L L6 N55B30A Gas and S55B30 Gas engines from 2010 to 2021, including:
* BMW M2, M3, M4, M235i
* BMW 135i, 135is
* BMW 335i, 335i GT xDrive, 335i xDrive
* BMW 435i, 435i Gran Coupe, 435i xDrive, 435i xDrive Gran Coupe
* BMW 535i, 535i GT, 535i GT xDrive, 535i xDrive
* BMW 640i, 640i Gran Coupe, 640i xDrive, 640i xDrive Gran Coupe
* BMW 740i, 740Li
* BMW X1 xDrive35i, X3 xDrive35i, X4 xDrive35i, X4 M40i, X5 xDrive35i, X5 sDrive35i, X6 xDrive35i, X6 sDrive35i
* BMW ActiveHybrid 3, ActiveHybrid 5, ActiveHybrid 7