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_x000D_ OE Number: 09?814, 17936?0001, 5198550, 5196168, 8924839, 4L8470_x000D_ _x000D_ Material: Neoprene, brass_x000D_ Width: Approx. 3-1/2in (88.5mm)_x000D_ Diameter: Approx. 3-3/4in (95mm)_x000D_ Shaft Diameter: Approx. 1in/25mm_x000D_ _x000D_ Drive: 12 Spline_x000D_ _x000D_ Number Of Blade: 12_x000D_ _x000D_ Fitment:_x000D_ Replacement for Jabsco_x000D_ Replacement for Johnson_x000D_ Replacement for Caterpillar_x000D_ Replacement for Detroit Diesel Note: Please double check the part number of your item, matching information is for reference only._x000D_ If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!