Quicksilver 965031 Driveshaft Housing Oil Seal for MerCruiserQuicksilver 965031 Driveshaft Housing Oil Seal is engineered for MerCruiser R, MR, and Alpha sterndrive units. Designed for a precise fit and dependable sealing, it helps protect internal components from water and debris intrusion.Features: Fits MerCruiser R, MR, and Alpha sterndrives; Easy installation with standard shop tools; Refer to owner's manual or service guide for exact fitment and instructions;