Seal the joint between the cylinder head and the engine block with the APEX Automobile Parts Inc Cylinder Head Gasket AHG390, a head gasket designed to hold combustion pressure in the cylinders and keep coolant and oil passages separated. It fits many vehicles, among them the 2003-2013 Chevrolet Silverado 1500, 2001-2013 GMC Sierra 1500 and 2008-2013 Chevrolet Tahoe, as a direct-fit replacement for the listed applications with V8-6.0L and V8-6.2L engines.
An engine cylinder head gasket is clamped between the head and the block, where it has to seal the combustion chambers along with the coolant and oil passages that run between the two.
- Part type: head gasket, for sealing the head-to-block joint.
- Engine codes: listed for V8-6.0L and V8-6.2L applications.
- Quantity: the Buyer's Guide lists a quantity of two for the applications shown, so check the quantity listed for your vehicle before ordering.
- Fit: direct-fit replacement for the listed applications.
Signs this part may need replacing: coolant loss with no visible leak, overheating, white exhaust smoke, milky or contaminated oil, or bubbles in the coolant reservoir. These signs can have other causes, so diagnose the engine before replacing. If a failed head gasket is the cause, AHG390 replaces it.
Head gasket replacement is a major job. Consult the vehicle service information for surface preparation, the head bolt torque sequence, and whether the original fasteners may be reused. See the Buyer's Guide tab for the full list of vehicles and engines.
