Features: 1.Replacement OE Number: The referencing OE number of this water pump impeller are 09?814, 17936?0001, 5198550, 5196168, 8924839, 4L8470. 2.Fitment: The water pump impeller is a replacement for Jabsco, replacement for Johnson, replacement for Caterpillar, replacement for Detroit Diesel. 3.Parameter: The width is 3?1/2in, the diameter is 3?3/4in, the shaft diameter is 1in, designed with spline drive and 12 blades, effective restore your engine performance. 4.Function: The heavy duty water pump impeller could provide high flow and cooling flows, direct replace for the old or broken one, better protect your engine. 5.Easy to Install: Stringently manufactured to meet the original standard, perfect replacement for the old or broken one, improving the time efficiency. Specification: Item Type: Water Pump Impeller OE Number: 09?814, 17936?0001, 5198550, 5196168, 8924839, 4L8470 Material: Neoprene, brass Width: Approx. 3-1/2in (88.5mm) Diameter: Approx. 3-3/4in (95mm) Shaft Diameter: Approx. 1in/25mm Drive: 12 Spline Number Of Blade: 12 Fitment: Replacement for Jabsco Replacement for Johnson Replacement for Caterpillar Replacement for Detroit Diesel 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!