Seal the left cylinder head to the engine block with the APEX Automobile Parts Inc Cylinder Head Gasket, part number AHG445L, which is designed to contain combustion pressure and keep coolant and oil passages separate. It is listed for several models from Ford and Mazda with the V6-4.0L engine, among them the 1991-2000 Ford Explorer, 1990-2000 Ford Ranger and 1990-1997 Ford Aerostar. See the Buyer's Guide tab for the full list.
A head gasket sits in the joint between the cylinder head and the block. This engine cylinder head gasket is intended to seal each combustion chamber against cylinder pressure. It also helps keep the coolant and oil passages that cross the joint apart from each other and from the outside of the engine.
Signs a head gasket may need replacing: unexplained coolant loss, white exhaust smoke, overheating, coolant in the oil or oil in the coolant, and low compression. Other faults can cause the same symptoms, so diagnose the engine before replacing parts. If a failed left-side head gasket is the cause, AHG445L replaces it.
Installation: Replacing a head gasket requires removing the cylinder head. Clean the head and block sealing surfaces and check that they are flat. Consult the vehicle service information for the tightening sequence, the torque values and the correct head bolts, including whether the original bolts may be reused.
What does the APEX AHG445L cylinder head gasket do?
It seals the joint between the left cylinder head and the engine block. It is designed to contain combustion pressure and keep coolant and oil passages separate.
Is AHG445L the right Ford Ranger cylinder head gasket for my truck?
It is listed for the left side of the 1990-2000 Ford Ranger with the V6-4.0L engine. Check the Buyer's Guide tab to confirm it matches your vehicle.
Which side of the engine does this head gasket fit?
AHG445L is the left-side cylinder head gasket. The listed applications use one of this gasket each.
What are signs a head gasket may be failing?
Common signs include coolant loss, white exhaust smoke, overheating, and coolant mixing with oil. Other faults can cause these too, so diagnose the engine before replacing the gasket.
What should I know before installing this head gasket?
The cylinder head must be removed, and both sealing surfaces must be cleaned and checked for flatness. Follow the service information for torque values, sequence and head bolt reuse.
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.
