Mahle GS33581 Engine Cylinder Head Bolt Set

Overview of Mahle GS33581 Engine Cylinder Head Bolt Set

The Mahle GS33581 Engine Cylinder Head Bolt Set is engineered for precision and durability, designed specifically for select BMW models. This set ensures reliable fastening of the cylinder head, maintaining engine integrity under demanding conditions.

• Compatible with BMW 545i, 550i, 645Ci, 650i, 745i, 745Li, 750i, 750Li, and X5 models
• 12-point fastener head style for secure torque application
• Constructed from high-strength steel material
• OEM standard item grade for consistent quality
• Torque to yield design for optimal clamping force
• Includes 10 bolts per package, washers not included

Technical Details and Features

The GS33581 cylinder head bolt set features a 12-point fastener head style, allowing for precise torque application with compatible tools. Manufactured from durable steel, these bolts meet OEM standards to ensure proper fit and function. The torque to yield (TTY) design means each bolt stretches slightly during installation, providing a consistent and reliable clamping force critical for maintaining cylinder head sealing. This set includes 10 bolts, sufficient for a complete cylinder head installation on compatible BMW engines. Note that washers are not included, so ensure compatibility with your existing hardware.

Compatible BMW Models and Applications

This cylinder head bolt set is compatible with a range of BMW vehicles, including the 545i, 550i, 645Ci, 650i, 745i, 745Li, 750i, 750Li, and X5 models. It is designed to meet the specific torque and material requirements of these engines, making it suitable for engine rebuilds, repairs, or maintenance where cylinder head bolts need replacement.

• Prevents cylinder head gasket leaks caused by improper bolt tension
• Addresses bolt fatigue and stretching from engine heat cycles
• Resolves issues related to engine misfires due to head warping
• Ensures proper sealing after cylinder head removal or replacement
• Maintains engine compression and performance

Installation Notes and Tips

When installing the Mahle GS33581 cylinder head bolt set, follow the manufacturer’s torque specifications carefully. Since these bolts are torque to yield, they should not be reused once removed. Use a calibrated torque wrench compatible with 12-point fastener heads to achieve accurate tightening. It is recommended to replace all bolts in the set during cylinder head service to ensure uniform clamping force and prevent engine damage.

Quality Assurance and Warranty

Mahle manufactures the GS33581 cylinder head bolt set to OEM standards, ensuring consistent quality and reliability. The steel construction and torque to yield design contribute to long-lasting performance under normal operating conditions. Warranty coverage details should be confirmed with the point of purchase or Mahle directly, as they may vary by region.