1) According to the factory specifications. 2) Perfect match for the one. 3) Easy installation. 4) Stable characteristics, high reliability. 5) Quality materials, firm, corrosion resistant and durable. Oil, acid and alkali-resistant, water-resistant, wear-resistant. Condition: 100% new Size: approx. 5 x 2.1 cm(1.97 x 0.83 inch) (WxH) Compatible With: fit for Johnson impeller 09-1026B fit for Sierra 18-3030 fit for Jabsco 673-0001 18673-0001 fit for Volvo 804696 897055 875808-8 3586497 3593659 Brass Hub Colour:black Material:ABS Package Contents: 1 x Water pump impeller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.