Rato R500-D Head Gasket

Rato R500-D 94mm head gasket

Fits only Rato R500-D head, AND DOES NOT FIT RATO R500-V

This head has the GX390 head bolt pattern and size, but uses a hemispherical combustion chamber, 5.5mm stem valves, and has longer and skinnier stamped steel rocker arms mounted on their own canted pedestal shafts. This engine is rare, and you may only find it in R500-D, R500N-V, and some R460 generators however we have seen one instance where an engine marked "R500-V" is actually an R500-D. Both engines have a 94mm bore, but the R500-D has the smaller head bolts and head bolt pattern of the GX390, NOT the larger R500-V.