Impeller Mercruiser Drive | Sierra 18-3017 Exhaust Block Off Plates 0L marine engines from 1982

0L marine engines from 1982 to 1988

11/16”-16 thread size

Whether you’re dealing with standard or challenging marine conditions

3 Liter Delco EST (Powerline M43DELCO) is the perfect solution for your engine needs

Impeller Mercruiser Drive | Sierra 18-3017 Exhaust Block Off Plates 0L marine engines from 1982Impeller Mercruiser Drive Sierra 18 3017 Impeller Mercruiser Drive Sierra 18 3017 Direct replacement impeller fits Mercruiser #1, MR, R, and Alpha 1 marine engines thru serial number D494568 as well as many Mercury outboards. Impeller Mercruiser Drive by Sierra part# 18 3017 Fits Mercruiser #1, R, MR, and Alpha 1 units thru s n D494568 2 11 32 in. diameter x 1 19 64 in. width x 7 8 in. keyed shaft Replaces Mercury 47 89984, 47 89984T4, 47 30221, and