Major Repair Kit for rebuilding the raw water pump on many Crusader engines. This kit uses a graphite plugged brass bushing to replace the solid black graphite one that can break on installation. Bearing has a premium C3 ABEC 3 rating. Mechanical Seal is made of long lasting 316 Stainless Steel and is suitable for salt water use. Impeller Specifications: Width: 1-5/8" (41.2mm) Diameter: 2-9/16" (65mm) Shaft: 5/8" (16mm) Drive: 3/16" key Material: Neoprene Silhouette: 12 blades