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Product Description
H-D #9-40M, 10-40M (16692-40, 16695-40)
These replica High Compression #5 Aluminum HEADS will fit all 1939 & later Harley 45 cylinders using 7/16" diameter Head Bolts
Takes 18mm Spark Plugs
SPARE PARTS for Vintage Big Twin Harleys
H-D #9-40M, 10-40M (16692-40, 16695-40)
These replica High Compression #5 Aluminum HEADS will fit all 1939 & later Harley 45 cylinders using 7/16" diameter Head Bolts
Takes 18mm Spark Plugs