Mercury - MerCruiser 43-55778A3 GEAR SET-1.98:1Genuine OEM Mercury MerCruiser replacement engine partSpecial Order Item: This product is ordered specifically for your application. To help ensure...
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Add to CartFor 1.98:1 Ratio Drives.
Drive Gear = 20 teeth; Driven Gear = 24 teeth.
For 120/140 (S/N 2791957 & UP) and Gen II (S/N K999999 & Below)
Interchangeable with:
California Residents:
WARNING
Cancer and Reproductive Harm -
P65Warnings.ca.gov