Seal the combustion chambers and keep coolant and oil passages isolated between the cylinder head and block with the MAHLE Engine Cylinder Head Gasket 3494VC. It fits many vehicles, among them the 1962-1977 Pontiac Grand Prix 5.7L / 6.4L / 6.6L / 6.9L / 7.0L / 7.5L, along with a wide range of other Pontiac, Buick, Oldsmobile and Stutz models.
Signs the original head gasket may need replacing include coolant or oil seepage at the head-to-block joint, cross-contamination of coolant and oil, or combustion loss between adjacent cylinders. See the "Vehicles it fits" section for the full application list. Sold per the package quantity of 1; quantity used varies by engine — many listed V8 applications call for two, while the L4-3.2L uses one, so verify the count your engine requires.
Interchange: 8518 PT
8518PT · 1016 · 484351 · 488575 · 9785654 · X7465 · HG31320
This part cross-references / interchanges with the following part numbers:
What is the MAHLE 3494VC?
It is an engine cylinder head gasket that seals the joint between the cylinder head and engine block, isolating the combustion chambers from the coolant and oil passages.
Is this the right cylinder head gasket for a 1962-1977 Pontiac Grand Prix 5.7L / 6.4L / 6.6L / 6.9L / 7.0L / 7.5L?
Yes. It is cataloged for those years and engines along with many other Pontiac, Buick, Oldsmobile and Stutz models. Check the "Vehicles it fits" section to confirm your exact year and engine.
What is the gasket made of?
The head gasket uses a composite sealing material and is listed at the OEM Standard grade.
How many do I need for my engine?
The package contains one gasket. Quantity varies by engine — many listed V8 applications require two, while the L4-3.2L uses one, so confirm the count your engine calls for.
Should I replace the head bolts?
MAHLE recommends replacing the cylinder head bolts when installing this gasket. Consult the vehicle service information for the correct fasteners and torque procedure.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
