This Water Pump Impeller Kit is for Mercury 25-50 HP 2 Stroke and 4-Stroke Outboard Motors Fits Mercury/ Mariner/ Force 1998-Up 25 30 40 50 HP Outboard Models Replace Mercury Marine 821354A2, 821354A1, Sierra 18-4531 Materials: Stainless Wear Plate, Nylon PA66, TubeNon-asbestos ...This Water Pump Impeller Kit is for Mercury 25-50 HP 2 Stroke and 4-Stroke Outboard Motors Fits Mercury/ Mariner/ Force 1998-Up 25 30 40 50 HP Outboard Models Replace Mercury Marine 821354A2, 821354A1, Sierra 18-4531 Materials: Stainless Wear Plate, Nylon PA66, TubeNon-asbestos, GasketNeoprence Impeller Package Contains: Tube Seal, Washer, Impeller, Gasket and Wear Plate as Pictures Showed p Outboard Water Pump Impeller Kit 821354A2 For Mercury 30HP 40HP 45HP 50HP Engine /b - This listing is a water pump impeller kit for MERCURY / MARINER / FORCE (1998-Up) 25, 30, 40, 50 HP. P/N 12045 / GLM12045; - Replaces OE # 821354A2 /b - Fits the Following Mercury Mariner Applications: /b - Hp/Model Serial # - ul li 40 hp 1998 0E288000 - 0E344999 /li li 40 hp 1999 0E345000 - 0E369299 /li li 50 hp 1998 0E288000 - 0E344999 /li li 50 hp 1999 0E345000 - 0E369299 /li /ul p - Kit includes the following OEM equivalent items: /b - ul li 85180 43023 Tube Seal /li li 85181 823547-1 Tube Seal /li li 31175 12-86645-1 Washer /li li 89640 47-85089-10 Impeller /li li 37490 27-822189 Gasket /li li 12505 821354-2 Wear Plate /li li 37700 27-822217 Gasket /li /ul