Impeller for MerCruiser R/MR/Alpha One water pumps. Hub uses key ID: 22.3 mm | OD: 60 mm W: 33.8 mm | 6 blades

OEM: Mercury Replaces: Mercury 89984T4 | 89984B2 | 899844 | 899842 | 89984 | 65960 | 85460 | 30221

For 1983-90 R/MR/Alpha One water pumps. Hub uses key ID: 22.3 mm | OD: 60 mm W: 33.8 mm | 6 blades

also crosses with: Sierra: 18-3017 GLM: 89840 Mallory: 9-45306