Built to seal combustion pressure and keep coolant and oil in their own passages, the APEX Automobile Parts Inc cylinder head gasket, part number AHG405, sits in the joint between the cylinder head and the engine block. It fits many vehicles with the L4-1.8L engine, among them the 1991-1996 Ford Escort, 1994-1997 Mazda Miata and 1990-1998 Mazda Protege. See the Buyer's Guide tab for the full list.
This engine cylinder head gasket is clamped between the head and the block. It seals the combustion chambers and the coolant and oil passages that pass between the two. It is a direct-fit replacement for the listed applications.
Signs a head gasket may need replacing: unexplained coolant loss, overheating, white exhaust smoke, coolant in the oil or oil in the coolant, and low compression between neighboring cylinders. Other faults can cause these symptoms, so diagnose the engine before ordering. If a failed gasket is the cause, AHG405 replaces it.
Installation: Replacing a head gasket is a major job. Follow the vehicle service information for cleaning the surfaces and checking them for flatness, and for the tightening sequence and torque values. It also tells you which head bolts are correct and whether the originals may be reused.
Does AHG405 work as a Ford Escort cylinder head gasket?
Yes. It is listed for the 1991-1996 Ford Escort with the L4-1.8L engine. The Buyer's Guide tab shows every listed application.
Is this a Mazda Miata cylinder head gasket as well?
Yes. It is listed for the 1994-1997 Mazda Miata and the 1990-1998 Mazda Protege, both with the L4-1.8L engine.
What does a cylinder head gasket do?
It seals the joint between the cylinder head and the engine block. It holds combustion pressure in the cylinders and keeps the coolant and oil passages sealed from each other.
What are the signs of a failing head gasket?
Common signs include coolant loss, overheating, white exhaust smoke and coolant mixing with oil. Other faults can cause these too, so diagnose the engine before replacing the gasket.
How many head gaskets does my engine need?
The listed applications use one head gasket each. The service information gives the torque values, the correct head bolts and whether the originals 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.
