New SEI Mercruiser Alpha 1 1972-1990 4.3L V6 1.81 Ratio Upper Gear Set. Replaces OEM number 43-75325A3. Fits Type I, R, MR, Alpha I drives. Three year fault free warranty.
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If you have any questions, please contact us through e-mail at customerservice@marinepartswarehouse.com. Please provide your engine model number to help confirm compatibility.
