ALL VALVE GUIDES ARE EACH
(UNLESS STATED)

Make	Engine	Model
Mitsubishi-Fuso	6D22	Fuso   FP418
		Fuso   FP428
		Fuso   FP458
	6D22-1AT0 Turbo	Fuso   FV418
	6D22-1AT2 Turbo	Fuso   FP418
		Fuso   FS428
	6D22-1AT3 Turbo	Fuso   FP418

In most types of reciprocating engines, a valve guide is provided for each poppet valve in the cylinder head. Along with the valve spring, it serves to positively locate the valve so that it may make proper contact with the valve seat. A valve guide is a tube-shaped piece of metal, pressed into the cylinder head, with the valve reciprocating inside it. Guides serve also to conduct heat from the combustion process out from the exhaust valve and into the cylinder head where it may be taken up by the cooling system. Bronze is commonly used, as is steel; a balance between stiffness and wear on the valve is essential to achieve a useful service life.