Genuine 11 24 1 713 342 Connecting Rod Bolt M9 x 1.25 x 53mm

The Genuine BMW Connecting Rod Bolt (part number 11241713342) is a critical OEM fastener designed to secure the connecting rod cap to the connecting rod assembly. This precision-engineered bolt holds the upper and lower crankshaft bearings together inside the connecting rod, maintaining proper alignment and clamping force in the engine's rotating assembly.

Technical Specifications:

• Thread Size: M9 x 1.25mm
• Length: 53mm
• Stretch bolt design for precise torque specifications
• OEM quality construction meeting BMW engineering standards
• Quantity required: Two bolts per connecting rod

Engine Compatibility:

• BMW M20 engines (2.5L and 2.7L inline-6)
• BMW M21 engines (2.4L diesel)
• BMW M40, M42, and M43 engines (1.6L and 1.8L inline-4)
• BMW M50 engines (2.5L inline-6, 1992-1994)
• BMW M70 and M73 engines (5.0L and 5.4L V12)
• BMW S70 engines (5.6L V12)

Important Service Notes:

These are torque-to-yield stretch bolts that are designed to stretch during installation to achieve proper clamping force. As a result, they must be replaced every time they are removed during engine rebuilding or connecting rod service. Reusing stretch bolts can lead to improper torque, bearing failure, and catastrophic engine damage. Always replace connecting rod bolts when performing engine rebuilds, replacing bearings, or servicing the crankshaft assembly.

This is a genuine BMW replacement part that ensures proper fit, reliability, and performance. When rebuilding your BMW engine, using OEM fasteners like these connecting rod bolts is essential for maintaining factory specifications and engine longevity.