ALL VALVE GUIDES ARE EACH
(UNLESS STATED)
 

• MAZDA626 Mk II (GC)198211 - 198709
• MAZDA626 Mk II Hatchback (GC)198211 - 198709
• MAZDA626 Mk III (GD)198706 - 199205
• MAZDA626 Mk III Hatchback (GD)198706 - 199205
• MAZDAE-SERIE Box (SR2)198401 - 200407
• MAZDAE-SERIE Bus (SR1)198401 - 199405
• MAZDAE-SERIE Flatbed / Chassis (SD1)198301 - 199907
• MAZDAE-SERIE Flatbed / Chassis (SD1, SL)199908 - 200409
• MAZDA626 Mk IV Hatchback (GE)199108 - 199704
• MAZDA626 Mk IV (GE)199108 - 199706
• MAZDA626 Mk III Estate (GV)198709 - 199709
• MAZDAB-SERIE BRAVO Pickup (UF)198501 - 199906

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.