For 1983-2005 R/MR/Alpha One, Alpha Gen II, Bravo & Blackhawk drives with “one bolt type” Oildyne Pumps. Includes: Gasket, Bolt, Screen & Cap

also crosses with:
Sierra: 18-6771
API Marine: VB500N-2, RES500E
ARCO: M525
Mallory: 9-18611
MES: RSV01