Cylinder heads are an integral part of all engines. All of the heads sold here sit on top of the blocks. The cylinder head Is where the air And fuel both come into the engine And leave the combustion chamber. The valves open And close to facilitate this And correct timing Is critical.
There are two main materials for cylinder heads. Most cars use aluminum for the superior heat transfer ability. Most trucks use cast iron to handle high boost pressures. All of the cylinder heads I sell are cast iron.
Cylinder heads can fail in many ways. They can warp causing the head gasket to fail And coolant to enter combustion. They can also crack And cause leaks. Sometimes this can be hard to diagnose, because the problem can be intermittent. They can also just wear out over time And stop sealing. This Is where the valves don't seal well against the head And the engine loses compression. The engine then gets hard to start might lose power, but hard starting and smoke are the normal symptoms of leaky valves. A New cylinder head will fix all these problems!
Here are the cylinder heads:
 3802339 Complete 4BT Cylinder Head
 3921394 6BT 12v Cylinder Head Gasket
 3930652 Complete 6BT Cylinder Head
 4BT 8V Bare Cylinder Head
 3966454 Bare Cylinder Head
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