Drive Shaft Housing Lower Unit Oil Seal for Marine Mercruiser Outboard models.Replaces OEM part numbers 26-965031, 26-66302, 26-56394, 26-37259, and 18-2056.Also replaces Force/US Marine 26-66302, GLM 85060, Mallory 9-76130, and Mercruiser Stern Drive 26-37259, 26-89237, 26-96503, 26-965031, Marine 26-56394, 26-66302.Specifications: Outer Diameter 1.381 inches, Shaft Size 0.875 inches, Width 0.250 inches.Package includes 2 oil seals.The package contains all parts shown in the product images.