Mahle HS4956B Engine Cylinder Head Gasket Set

Engine Cylinder Head Gasket Set for GM 3.4L Applications

The Mahle HS4956B engine cylinder head gasket set is built for select 2004-2005 Buick Rendezvous, Chevrolet Impala, Chevrolet Monte Carlo, Pontiac Aztek, Pontiac Grand Am, Pontiac Montana, plus 2004 Oldsmobile Alero and Silhouette applications. It combines OEM-standard sealing materials with application-specific gaskets for a precise repair on compatible GM vehicles.

Key Features

• Mahle HS4956B cylinder head gasket set for engine sealing service
• Graphite cylinder head gasket material for dependable head sealing
• Multi-layered steel exhaust manifold gasket material
• Molded rubber intake manifold gasket material
• OEM Standard item grade for service-replacement use
• Torque-to-yield design noted for the application
• Contains miscellaneous gaskets and seals for related sealing points
• Cylinder head bolts are not included

Detailed Description

Mahle designs this gasket set for engine repair work where sealing integrity matters across the cylinder head, intake, and exhaust interfaces. The graphite head gasket material, MLS exhaust manifold gasket material, and molded rubber intake manifold gasket material are selected to match the demands of the listed GM applications. This makes the HS4956B a practical choice for technicians servicing 2004-2005 Buick Rendezvous, Chevrolet Impala, Chevrolet Monte Carlo, Pontiac Aztek, Pontiac Grand Am, and Pontiac Montana, as well as 2004 Oldsmobile Alero and Silhouette models.

This part cross-references Fel-Pro HS 9071 PT-2 for the same application.

Common Repair Uses

• Restoring cylinder head sealing after gasket failure
• Addressing coolant or combustion leakage at the head gasket
• Replacing intake manifold sealing components during top-end service
• Repairing exhaust manifold sealing surfaces during engine teardown
• Correcting vacuum, oil, or coolant seepage at related gasket joints

Installation Notes and Tips

Confirm engine code and gasket match before installation, since fitment is limited to the listed vehicles. Manifold bolts are sold separately, cylinder head bolts are not included, and cylinder head bolt replacement is recommended for this torque-to-yield application. Exhaust pipe gasket is not included. Clean all mating surfaces thoroughly and follow the vehicle-specific torque sequence and tightening procedure during assembly.

Quality Assurance

Mahle gaskets are used by OEMs and technicians worldwide for engine sealing applications. The HS4956B is an OEM-standard gasket set built for the listed GM fitments and engineered to support reliable sealing performance in service repair work.