Sierra 18-2645-1 Mercruiser Lower Unit Seal KitSierra high-quality engine parts are designed to meet OEM specifications. Features all new and enhanced oil seals/o-rings for Bravo III drive compatibility. Matched to exceed OE form/fit/function to provide a quality application For All Bravo I, II, III, X and XR Drive Engines; Kit Includes: 18-2002 Oil Seal; 18-7103 O-Ring; 18-7104 O-Ring; 18-7188 O-Ring; 18-7117 O-Ring; 18-7163 O-Ring; 18-2944 Seal Ring; 18-2945 Drain Screw Gasket; 18-2430 Drain Screw Gasket; Oil Seals; Grommet; O-Ring; Interchangeable with: Mercruiser Stern Drive; 26-76868A04; Replaces Sierra part 18-2645