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Replace Mercruiser Sterndrive 250 1977
Complete counter rotation lower unit for Alpha One GEN I
If your upper shaft is not the newer style you will need to replace it
Replace Mercruiser Sterndrive 165-205 HP from 1976 to 1990
Color: Black
FOR YAMAHA V6 4 STROKE 2.0:1 RATIO (30'' SHAFT) COUNTER ROTATION gen 1 Replace Mercruiser Sterndrive 250 1977The 90 428 B30F is a Counter Rotation (Left Hand Rotation) Gear Case. This gear case replaces the gear case on most Yamaha Four Stroke V6 225 HP Engines with 2. 0: 1 Gear Ratio and 30 Inch Drive Shaft. Please view Technical tab for your specific model. For Counter Rotation only, do not use for Standard Rotation. The paint color is Black. You can paint it to match. For application assistance, please find your engine model number and call 514 247 9930
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