Fitments
40-73 45" (750cc) Flatheads (NU)
Part Description
Athena, top end gasket kit. 45" Flathead
0.5mm (.020") embossed copper cylinder head gaskets, 0.5mm (.020") reinforced fiber cylinder base gaskets, and all other gaskets, seals and O-rings required for a 45" top end rebuild. OEM replacement reference 17031-40 (55-40)