BMW Cylinder Head Bolt Set - Victor Reinz 11127583115

11127583115

OE Numbers

11127583115, 11121729246

Product Information

Engine Cylinder Head Bolt

An engine cylinder head bolt is a critical fastener that holds the cylinder head firmly onto the engine block. This secure fit ensures a tight seal between the cylinder head and the engine block, allowing for efficient compression and combustion, and preventing oil or coolant from leaking into the combustion chambers. Cylinder head bolts are designed to withstand extreme pressure and high temperatures generated during engine operation and are often torque to yield fasteners, meaning once removed they are meant to be replaced.

Engine Cylinder Head Bolt Failure Symptoms

• Coolant or Oil Leaks: A failing or loose cylinder head bolt may cause the head gasket to lose its seal, allowing coolant or oil to leak externally or into the combustion chamber
• Engine Overheating: A poor seal between the head and the engine block due to a failing head bolt can lead to coolant leaks, reducing the coolant level and causing the engine to overheat. This may trigger a temperature warning on the dashboard
• Reduced Engine Performance: A compromised head bolt may allow air or gases to escape the combustion chamber, leading to reduced compression and performance

M10x110mm, sold as a set of 10