Features: 1.Replacing OEM numbers for reference: 47?850893, 47?85089?10, 47?8508920. 2.6 blades water pump impeller, perfectly fit for Mariner 4?stroke 2?stroke engines. 3.Premium neoprene material, brass hub, tough and durable, which can withstand harsh marine environment. 4.Simple installation, no need of complex operations. Direct replace the old water pump impeller. 5.Strictly follow the manufacturing standard to make sure excellent performance. Specification: Item Type: Water Pump Impeller Material: Neoprene with Brass Hub OEM Part Number: 47-850893 / 47-85089-3 / 47-85089-10 / 47-8508920 / 47-8M0027792 / 47-850891 / 47-85089 / 47-8M0024502. Replaces: Fit for Sierra: 18-3057 Fit for GLM: 89640 Fit for Mallory: 9-45303 9-45303-10 Number of Blades: 6 External Impeller Overall Diameter: Approx. 73.15mm/2.9in Internal Shaft Insert Diameter: Approx. 16.03mm/0.6in Fitment: Fit for Mariner 4-stroke engines: Fit for 9.9 HP 4-stroke Bigfoot 0G760300 - Up Fit for 15 HP 4-stroke Bigfoot 0G590000 - Up Fit for 25 HP 4-stroke carb 0G590000 - 1B344298 Fit for 30 HP 4-stroke carb.std. 0G760300 - Up Fit for 30 HP 4-stroke EFI 0T409000 - 1B226999 Fit for 40 HP 4-stroke carb.std. 0G760300 - Up Fit for 40 HP 4-stroke EFI std. 0T409000 - 1B226999 Fit for 40 HP 4-stroke EFI short shaft 1B227000 - 1B344398 Fit for 45 HP 4-stroke Bodensee 0G231123 - 0T178499 Fit for 50 HP 4-stroke standard 0G231123 - 0T178499 Fit for Mariner 2-stroke engines: Fit for 18 HP 18XD 5837437 - Up Fit for 20 HP 20XD 6443973 - 0T800749 Fit for 25 HP 25XD 5705532 - Up Fit for 25 HP SeaPro 0B238464 - Up Fit for 25 HP 3 Cyl. 0E268781 - Up Fit for 30 HP 2 Cyl. (644cc) 0G053314 - 0T598999 Fit for 30 JET 0G590000 - Up Fit for 40 HP 2 Cyl. (644cc) 0G053314 - Up Fit for 40 HP 3 Cyl. 0G531301 - Up Fit for 50 HP 3 Cyl. 0G590000 - Up Fit for Chrysler/Force Outboard models: Fit for 25hp (1996-98) serial# E127700-E344999 Fit for 40/50hp (1995-99) serial# E093700-E369299 Fit for 75hp (1999) serial# E345000-up PackageList: 1 x Water Pump Impeller Note: Please double check the part number of your item, matching information is for reference only. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!