Cylinder Head Assembly - 54mm - 150cc ATVs - Version A 156377 1 in) on longer side

1 in) on longer side

Center hole measurement: 29mm (1

53mm (3/8 in)

Starter Switch details:

Chinese Gasket Set - 54mm - 150cc Engine - Version A - Long Case

Cylinder Head Assembly - 54mm - 150cc ATVs - Version A 156377 1 in) on longer sideChinese ATV Cylinder Head Assembly 54mm 150cc Version A There are 2 versions of the GY6 150cc engine. This kit is for version A engine. PLEASE check measurements and specs BEFORE you order. Complete cylinder head assembly with valves for 150cc 4 stroke engines. Fits many makes and models of GY6 150cc engines. Check pictures, specs and measurements for verification of the correct part. The A engine has 54mm spacing, center to center, on the cylinder