Seal the critical joint between cylinder head and engine block with the APEX Automobile Parts Inc Cylinder Head Gasket AHG391. It is a direct-fit replacement for the listed applications with the V8-6.5L engine, including the 1992-2000 Chevrolet C2500, 1992-2000 Chevrolet K3500, 1994-1997 GMC Yukon, 1995-1999 Chevrolet Tahoe, 1996-2002 GMC Savana 2500 and 2002-2004 Hummer H1.
A head gasket sits between the cylinder head and the engine block. It is designed to seal combustion pressure inside the cylinders and to keep apart the coolant and oil passages that run through that joint.
Signs a head gasket may need replacing include unexplained coolant loss, overheating, white exhaust smoke, coolant in the oil or oil in the coolant, and low compression. Other faults can cause these symptoms, so diagnose the engine before replacing parts. Consult the vehicle service information for the correct head fasteners and whether they may be reused.
The listed applications also include Chevrolet and GMC C1500, K1500, C2500, K2500, C3500 and K3500 models; Chevrolet and GMC C1500, C2500, K1500 and K2500 Suburban models; Chevrolet Express 2500/3500 and GMC Savana 2500/3500 vans; Chevrolet G20/G30 and GMC G2500/G3500 vans; the Chevrolet P30 and GMC P3500; and the 1994 Chevrolet Blazer. See the Buyer's Guide tab for the years that apply to each model.
What does the APEX AHG391 cylinder head gasket do?
It seals the joint between the cylinder head and the engine block. It helps contain combustion pressure and keeps the coolant and oil passages in that joint separated.
Which engine does the AHG391 fit?
Every listed application, from Chevrolet and GMC trucks, SUVs and vans to the 2002-2004 Hummer H1, uses the V8-6.5L engine. Check the Buyer's Guide tab for your exact year and model.
How many AHG391 gaskets are used per application?
The Buyer's Guide lists a quantity of two per application for every listed V8-6.5L vehicle. Confirm how many you are ordering before checkout.
What are signs a head gasket may need replacing?
Possible signs include coolant loss with no visible leak, overheating, white exhaust smoke, milky oil and low compression. Other faults can cause these, so diagnose the engine before replacing parts.
Can I reuse my original head bolts?
Some head bolts are torque-to-yield and single-use. Consult the vehicle service information for the correct fasteners and whether they may be reused.
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.
