Brand New Aftermarket Gear Set 43-18411A2 (20 & 22 teeth) (1.50:1.47) Exact OEM Replacement: Premium Marine Gear Set Designed To Directly Replace MerCruiser OEM Part Numbers 43-18411A2, 18411A2, And 18410A2, As Well As Sierra 18-2201, GLM 11210, And Red Rhino MR-843. Broad MerCruiser Fitment: Precision-Engineered For 1971–1997 Mercury MerCruiser Sterndrives, Perfectly Fitting MC-I, R, MR, Alpha One, And Alpha One Gen II Models (Serial Number 0K999999 And Below). .
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