Help seal combustion pressure, coolant and oil inside your engine with the APEX Automobile Parts Inc Cylinder Head Gasket, part number AHG493R, a right-side head gasket that seals the joint between the cylinder head and the engine block. It fits many vehicles, among them the 1997-2003 Ford F-150 4.2L, 1999-2004 Ford Mustang 3.8L / 3.9L and 2004-2007 Ford Freestar 3.9L / 4.2L, and serves as a direct-fit replacement for the listed applications. See the Buyer's Guide tab for the full list.
A head gasket sits between the cylinder head and the block. It is designed to contain combustion pressure and to keep coolant and oil in their own passages. Signs this part may need replacing include unexplained coolant loss, overheating, white exhaust smoke, oil mixed with coolant or low compression. Other faults can cause the same symptoms, so diagnose the cause before replacing the gasket.
Replacing a head gasket is a detailed job. Follow the vehicle service information for surface preparation and head bolt torque. It also tells you which fasteners to use and whether the original head bolts may be reused.
Is this the right Ford F-150 cylinder head gasket for a 1997-2003 Ford F-150 4.2L?
It is listed as a direct-fit replacement for the 1997-2003 Ford F-150 with the V6-4.2L engine. Check the Buyer's Guide tab for other model years and engine details.
Can I use this as a Ford Mustang cylinder head gasket on a 1999-2004 Ford Mustang 3.8L / 3.9L?
Yes. It is listed for the 1999-2004 Ford Mustang 3.8L / 3.9L and the 2004-2007 Ford Freestar 3.9L / 4.2L. The Buyer's Guide tab shows the engine code for each application.
What does an engine cylinder head gasket do?
It seals the joint between the cylinder head and the engine block. It helps contain combustion pressure and keeps coolant and oil in their own passages.
Which side of the engine does this gasket fit?
This gasket is cataloged for the right-side position. A V6 has a cylinder head on each bank, so make sure you are ordering the side you need.
What signs may point to a failing head gasket?
Coolant loss, overheating, white exhaust smoke, oil mixed with coolant or low compression may be signs. Other faults can cause these symptoms too, so diagnose the cause first.
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.
