Mahle GS33412 Engine Cylinder Head Bolt Set

Mahle GS33412 Cylinder Head Bolt Set

The Mahle GS33412 engine cylinder head bolt set is built for OE-standard service on Ford and Lincoln applications that require precise head fastening. It uses steel fasteners with a 6-point hex head design for straightforward torque application during engine repair.

Key Features

• OE Standard engine cylinder head bolt set for factory-style service
• Steel fastener construction for dependable clamping strength
• 6 pt hex head bolt style for secure tool engagement
• Washer-free design where washers are not required
• Engine hardware from Mahle, a brand known for sealing and engine service components

Product Details

Mahle GS33412 is an OEM-standard cylinder head bolt set for engine rebuild and head gasket service where correct fastener load and consistent sealing are critical. Mahle’s sealing and engine hardware products are used by OEMs and technicians worldwide, and this set follows that service-focused approach for Ford and Lincoln platforms. This part cross-references FEL-PRO ES 71328 for the same application.

Compatible With 1997-2010 Ford F-150, 1999-2010 Ford F-250 Super Duty, 1999-2010 Ford F-350 Super Duty, 1997-2014 Ford Expedition, 2005-2014 Lincoln Navigator, and other listed Ford and Lincoln applications. The GS33412 part number is also associated with Ford service references 3L3Z 6065-AA and 9R3Z 6065-A.

Common Repair Uses

• Replacing stretched or torque-to-yield cylinder head bolts during head gasket service
• Restoring proper cylinder head clamping force after engine teardown
• Addressing combustion sealing issues caused by worn head fasteners
• Supporting engine rebuilds on Ford truck, van, and SUV platforms
• Replacing corroded or damaged head bolts found during inspection

Installation Notes

Verify engine code and exact vehicle application before installation, since fitment varies across the listed Ford and Lincoln models. Follow the factory torque sequence and tightening specifications for the engine being serviced, and inspect the cylinder head and block surfaces before final assembly. Use clean threads and proper torque tools to achieve consistent clamping.

Quality Assurance

Mahle manufactures engine sealing and hardware products to OEM-standard expectations for service work. The GS33412 is built as a direct replacement-style cylinder head bolt set for the confirmed applications listed above.