Jabsco 17936-0001-P Impeller replaces Volvo/JohnsonThis Jabsco impeller is constructed from durable neoprene for a long working life. This water pump impeller comes with lubricant, a gasket and instructions for easy installation. This impeller is designed for use with CAT, DDA, MAN, Volvo, Perkins, and Johnson SystemsReplaces: CAT; 4L8470; DDA; 5196168; 5198550; 8924839; Johnson; 09-814B; Specifications: Diameter: 3-3/4"; Width: 3-1/2"; Shaft Diameter: 1"; Drive Type: Spline Drive; Material: Neoprene; Blades: 12; Jabsco 17936-0001-P Impeller Installation Instructions Remove screws, endcover, and gasket; Remove old impeller using Jabsco removal tool; Remove any debris from pump chamber; Lubricate inside pump wall and grease; Insert replacement impeller into impeller bore with a twisting motion; Fit replacement gasket and endcover; Tighten endcover;