The head gasket forms a seal between the engine block and the cylinder head. This means your head gasket has to seal both extremely hot, high-pressure combustion gases as well as engine coolant which can be anywhere from cold ambient temperatures to the normal operating temperature of your engine.
For Isuzu FVZ & FVR model trucks with the 6HK1 engine.
Camshaft bushings provide support and flexibility in the proper operation of a vehicle’s braking system .A camshaft bushing may become worn, allowing some non-rotational movement of the camshaft. Pulling on the camshaft by hand generates a combination of lateral and rotational movement and does not provide an accurate assessment of the bushing’s wear.
The oil pumps primary purpose is to circulate engine oil under pressure to the bearings, pistons and the camshaft. This lubricates these systems, allows the use of higher-capacity fluid bearings and also assists in engine cooling.