Mahle HS5912C Engine Cylinder Head Gasket Set

Mahle HS5912C Head Gasket Set

The Mahle HS5912C engine cylinder head gasket set is built for GM 3.8L applications that need reliable sealing at the cylinder head, intake, and exhaust interfaces. It is an OEM standard replacement for service work on Buick, Chevrolet, Oldsmobile, and Pontiac vehicles across the 1997-2009 model years.

Mahle gaskets are used by OEMs and technicians worldwide for dependable sealing performance. The HS5912C combines graphite cylinder head gasket material, beaded steel exhaust manifold gasket material, and molded rubber intake manifold gasket material to support a precise seal in high-heat engine environments.

Key Features

• Engine cylinder head gasket set for GM V6 service applications
• Graphite cylinder head gasket material for sealing consistency
• Beaded steel exhaust manifold gasket material
• Molded rubber intake manifold gasket material
• OEM standard item grade
• Additional miscellaneous gaskets and seals included
• Cylinder head bolts not included
• Torque-to-yield fastener application

Detailed Description

Mahle HS5912C is an OEM standard engine gasket set for 1997-2009 Buick, Chevrolet, Oldsmobile, and Pontiac vehicles with the listed 2nd design intake manifold configuration. This part number is commonly searched as a head gasket set for Buick LeSabre, Buick Regal, Chevrolet Impala, and Pontiac Grand Prix repairs, and it also cross-references FEL-PRO HS 9917 PT-3 and HS 9917 PT-4 for the same application. The set is engineered around the sealing surfaces that matter most during cylinder head service, helping restore compression control and fluid separation after teardown.

Compatible With 2005-2009 Buick Allure, N/A; 2005-2009 Buick LaCrosse, N/A; 2006-2008 Buick Lucerne, N/A; 1997-2008 Pontiac Grand Prix, N/A; 1997-2005 Buick LeSabre, N/A; 1997-2005 Buick Park Avenue, N/A; 2000-2005 Chevrolet Impala, N/A; 1998-2005 Chevrolet Monte Carlo, N/A; 1997-2005 Pontiac Bonneville, N/A; 1997-2004 Buick Regal, N/A; 1998-1999 Chevrolet Lumina, N/A; 1997-1999 Oldsmobile 88, N/A; 1998-1999 Oldsmobile Intrigue, N/A; 1997-1999 Oldsmobile LSS, N/A; 1997-1998 Oldsmobile Regency, N/A; 1997 Buick Riviera, N/A.

What It Helps Repair

• Coolant loss from a leaking cylinder head gasket
• Compression loss that affects idle quality and power
• Intake manifold sealing issues on 2nd design applications
• Exhaust sealing leaks at the manifold interface
• Oil and coolant crossover contamination from failed gaskets

Installation Notes and Tips

Verify the engine uses the 2nd design intake manifold gasket with locating pins before ordering. Cylinder head bolts are not included, and torque-to-yield fasteners should be replaced during service. Clean all mating surfaces thoroughly, inspect the cylinder head and block for warpage, and follow the factory torque sequence and angle specifications during reassembly. The HS5912C is a direct-fit service part for the listed Buick, Chevrolet, Oldsmobile, and Pontiac applications.

Quality Assurance

Mahle supplies sealing products trusted in OEM and technician service environments. The HS5912C is built to OEM standard expectations for fit and sealing performance in the specified applications.