Brand New Aftermarket Upper Gear Set 43-853641A2 (20 & 22 teeth) (1.47 Ratio) Heavy-Duty V8 Gear Set: Precision-engineered 1.47 ratio Upper Gear Set (20/22 Teeth) designed for Mercruiser Alpha One Gen II sterndrives paired with V8 engines. Exact Model Fitment: Fits Alpha One Gen II drives from 1998 and newer (Serial Number 0L100040 & Up); replaces OEM part number 43-853641A2. OEM Cross-Reference: High-quality replacement for Sierra 18-6351 and GLM 11214, offering professional mechanics a reliable alternative for restoring drive performance. .
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