Elring 527.450 Engine Cylinder Head Bolt Set

Elring Cylinder Head Bolt Set 527.450

Elring 527.450 is an engine cylinder head bolt set built for specific BMW applications that require precise thread sizing and torque retention. This set includes 12 bolts with Male Torx head/nut design and multiple thread lengths to match the listed engine fitments.

Key Features

• Engine cylinder head bolt set for BMW applications
• 12-piece set for complete cylinder head fastening service
• Male Torx bolt head/nut design for secure tool engagement
• Thread Size 1: M 9x1,25x125
• Thread Size 2: M 9x1,25x95
• Thread Size 3: M 10x1,5x170
• Elring part number 527.450

Detailed Description

This Elring cylinder head bolt set is specified for engine hardware service where correct bolt length, thread pitch, and head design matter. The set is listed for 2012-2015 BMW X1 and 2007-2012 BMW 120i, including the 120i application with 170 mm length, M10 thread size, 1.5 mm pitch, and Male Torx bolt head/nut design. If you are sourcing BMW X1 cylinder head bolts or looking for Elring 527.450 for a BMW 120i engine repair, this part matches the documented fitment and dimensions.

This part cross-references BMW 11 12 7 578 077 and T40366-00 for the same application.

What It Is Used For

• Replacing stretched or removed cylinder head bolts during engine service
• Restoring proper cylinder head clamping force after head gasket work
• Addressing fastener wear, thread damage, or torque retention concerns
• Supporting engine reassembly on listed BMW X1 and BMW 120i applications

Installation Notes and Tips

Verify the engine code, bolt length, thread size, and head design before installation. Follow the vehicle-specific tightening sequence and torque-angle procedure from the service manual, and replace all cylinder head bolts as a complete set when the engine specification calls for new fasteners. Confirm that the Male Torx tool engagement matches the bolt head before starting work.

Quality Assurance

Elring is a recognized OE-focused engine sealing and fastening brand, and this bolt set is built to match the listed dimensions and application data for accurate engine service.