Mahle GS33415 Engine Cylinder Head Bolt Set

Mahle GS33415 Cylinder Head Bolt Set

Mahle GS33415 is an OEM-standard engine cylinder head bolt set built with steel fasteners and a hex head style for secure cylinder head retention. It is a direct-fit hardware solution for select Chevrolet and GMC truck and van applications, including Silverado 2500 HD, Silverado 3500, Sierra 2500 HD, and Sierra 3500 models.

Key Features

• Engine cylinder head bolt set for select GM applications
• OEM Standard item grade for factory-style service replacement
• Steel fastener material for strength and durability
• Hex head style for conventional installation and removal
• Washer-free design; washers are not required
• No additional package contents included
• Cross-reference: FEL-PRO ES 72188

Product Details

Mahle GS33415 is engineered as a replacement engine hardware set for cylinder head service where reliable clamping force is required. Mahle is known for sealing and engine service components used by OEMs and technicians worldwide, and this part follows that service-focused approach with an OEM-standard specification. If you are servicing a Chevrolet Silverado 2500 HD Classic, GMC Sierra 3500 Classic, or another listed GM truck application, GS33415 provides the correct style of cylinder head bolt hardware for the job.

This part number, GS33415, is listed for a wide range of 2001-2007 Chevrolet and GMC applications, including 2001-2006 Chevrolet Silverado 2500 HD, 2001-2006 Chevrolet Silverado 3500, 2001-2006 GMC Sierra 2500 HD, and 2007 Chevrolet Silverado 2500 HD Classic. It also covers related applications such as Chevrolet Avalanche 2500, Suburban 2500, Express 3500, GMC Sierra 3500, Yukon XL 2500, and Savana 3500.

What It Helps Address

• Loose or worn cylinder head fasteners during engine service
• Replacement needs after head gasket repair or cylinder head removal
• Hardware mismatch when restoring factory-style engine assembly
• Corrosion or fatigue concerns in original head bolts
• Service work on Chevrolet Silverado 2500 HD and GMC Sierra 2500 HD engines

Installation Notes and Tips

Verify engine code and application details before installation, since the listed vehicles cover multiple engine types and configurations. Clean the threaded holes, inspect the cylinder head and block surfaces, and follow the manufacturer’s tightening sequence and torque procedure for the specific engine. Because this is a cylinder head bolt set, proper torque accuracy and installation order are critical for sealing performance.

Quality Assurance

Mahle supplies engine sealing and hardware products used in professional repair environments, and GS33415 is built to OEM-standard expectations for service replacement. Confirm fitment against the vehicle and engine before installation. This part cross-references FEL-PRO ES 72188 for the same application.