Seal the joint between the right cylinder head and the engine block with the APEX Automobile Parts Inc Cylinder Head Gasket, part number AHG555R. It fits many vehicles, among them the 2005-2019 Nissan Frontier V6-4.0L, 2005-2012 Nissan Pathfinder V6-4.0L and 2012-2021 Nissan NV1500 V6-4.0L, and is a direct-fit replacement for the listed applications.
A head gasket sits between the cylinder head and the engine block. It is designed to hold combustion pressure inside the cylinders and to keep coolant and oil in their own passages. If a failed engine cylinder head gasket is the cause, signs may include coolant loss with no visible leak, white exhaust smoke, overheating, milky oil or low compression. These symptoms can have other causes, so diagnose the problem before replacing parts.
Replacing a head gasket is a major repair. Consult the vehicle service information for surface preparation and the tightening sequence. It also gives the correct head fasteners and says whether the originals may be reused.
What does the APEX AHG555R cylinder head gasket do?
It seals the joint between the right cylinder head and the engine block. It is designed to contain combustion pressure and to keep coolant and oil in their own passages.
Is this the right Nissan Pathfinder cylinder head gasket for a 2005-2012 Nissan Pathfinder V6-4.0L?
Yes. It is a direct-fit replacement for the 2005-2012 Nissan Pathfinder with the V6-4.0L engine, in the right-side position. Check the Buyer's Guide tab to confirm your vehicle.
Which side of the engine does AHG555R fit?
The catalog lists it for the right position. The listed applications use one of this gasket.
What are signs a head gasket may need replacing?
Signs may include unexplained coolant loss, white exhaust smoke, overheating, milky oil or low compression. Other faults can cause these too, so diagnose before replacing.
Can I reuse the original head bolts?
Consult the vehicle service information for the correct head fasteners, the tightening sequence 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.
