Mahle GS33597 Engine Cylinder Head Bolt Set

Engine Cylinder Head Bolt Set for GM Applications

The Mahle GS33597 engine cylinder head bolt set is built for secure cylinder head fastening in compatible GM applications. It uses OEM-standard steel fasteners with a triple square head style and torque-to-yield design for controlled clamping during engine assembly or repair.

Mahle gaskets and sealing components are trusted by OEMs and technicians worldwide, and this cylinder head bolt set follows that same OE-focused approach. The GS33597 is a direct-fit hardware solution for service work on vehicles such as the Buick Lucerne, Cadillac DTS, and Cadillac STS.

Key Features

• Mahle GS33597 engine cylinder head bolt set
• OEM Standard item grade for OE-style service replacement
• Steel fastener material for engine hardware applications
• Triple square fastener head style for proper tool engagement
• Torque-to-yield design for controlled tightening sequence
• Washers included for the specified application
• Fits compatible Buick, Cadillac, and Pontiac engine applications

Detailed Description

The Mahle GS33597 is an engine cylinder head bolt set engineered for applications that require torque-to-yield fasteners. This style of bolt is commonly used where precise clamping force is critical to cylinder head sealing and long-term engine integrity. The steel construction and OEM-standard grade support accurate service replacement in vehicles including the 2006-2011 Buick Lucerne, 2006-2011 Cadillac DTS, 2005-2010 Cadillac STS, 2004-2009 Cadillac SRX, 2004-2009 Cadillac XLR, 2004-2005 Cadillac DeVille, 2004-2005 Pontiac Bonneville, and 2004 Cadillac Seville.

This part cross-references FEL-PRO ES 72217 for the same application. The Mahle GS33597 is also associated with General Motors part numbers 11562349, 11569957, and 11589058.

What This Part Helps Address

• Loose or uneven cylinder head clamping after engine service
• Replacement of stretched torque-to-yield head bolts during rebuilds
• Head gasket sealing issues caused by worn fasteners
• Service needs on GM engines requiring triple square head bolts
• Hardware replacement for Buick Lucerne, Cadillac DTS, and Cadillac STS repairs

Installation Notes and Tips

Follow the factory tightening sequence and torque specifications for the exact engine code. Torque-to-yield bolts are tightened in stages and should not be reused unless the service procedure specifically allows it. Verify cylinder head and block surfaces are clean, flat, and free of debris before installation. Use the correct triple square tool to avoid fastener damage.

Quality Assurance

Mahle manufactures sealing and engine hardware products to OE-standard expectations, with a focus on consistent fit and sealing performance for professional engine service.