Product Description CDI Mercury/Mariner Distributor Rotor and ShaftProduct Description: Mercury / Mariner Distributor Rotor and Shaft; Fits 19721975 65 HP engines; Replaces: Part #337-4603; CDI 994-4603 Rotor & Shaft Assy. (3 Cyl.) at Wholesale Marine $244.99 Buy Now Check Price on Amazon Check Price on eBay