Feature: 1. Application: Replacement for JABSCO 18958‑0001, replacement for SHERWOOD 17000K, replacement for CEF 500164 Johnson and so on. 2. Drive Type: The water pump impeller is spline drive type, 12 blade is designed for better performance, bring you more convenience. 3. Materials: Made of brass, chemical corrosion resistant metal alloy and scientifically engineered high performance neoprene rubber. 4. Function: Suitable for marine water‑pumping duties such as engine cooling, water transfer, wash down and bilge water pumping purposes, work for fresh or sea water. 5. Suggestion: You should replace your flexible pump impellers at least once every year or sooner depending on the engine duty. Always carry spare impellers on board before boating sports. Specification: Item Type: Water Pump Impeller Material: Rubber + Brass + Metal Alloy Blades Quantity: 12 Outer Diameter: Approx. 85.0 MM / 3.25 inch Inner Diameter: Approx. 20.00 MM / 0.79 inch Shaft Depth: Approx. 73.50 MM / 2.89 inch Fitment: Replacement for JABSCO 18958-0001 Replacement for SHERWOOD 17000K Replacement for CEF 500164 Johnson Replacement for Pump: 09-704BT-1 Replacement for Jabsco: 18958-0001 Replacement for Caterpiller: 7E0321, 7E-0321 Replacement for Cummins: 3897337, 3916852 Replacement for Sherwood: 17000K Replacement for CEF: 500164 Replacement for Cummins 6C/6BT (early pumps with keyway. For splined shaft replacement for Sherwood 27000K) Replacement for Cummins 3802444 3897337 3916852 3925236 6CTA8.3M Replacement for Caterpillar CAT C-9 Replacement for CAT 3208 New Models some Replacement for Caterpillar CAT 170200478/7E-0321 Replacement for Caterpillar 1W5664 7E0321. Package List: 1 x Water Pump Impeller Note: 1. Please double check the part number of your item, matching information is for reference only.2. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks