Mercury Mercruiser - Alpha One Driveshaft Housing - 1.65 Ratio - Fits MC-I, R, MR & Alpha One - 1547-9412A21 Suzuki-DF40A-2020 T-H Marine developed the first

T-H Marine developed the first steering stop available for outboard motors and now we've revised that design so it stands apart from imitation and performs better than any other on the market

better long-term performance

decals or any other surfaces that are not intended to be cleaned

water and debris in the fuel system can lead to serious issues

small cruisers

Mercury Mercruiser - Alpha One Driveshaft Housing - 1.65 Ratio - Fits MC-I, R, MR & Alpha One - 1547-9412A21 Suzuki-DF40A-2020 T-H Marine developed the firstWhen using the Alpha One Driveshaft Housing Assembly as a replacement on earlier (pre 1983) 4 & 6 cylinder inline models, it will be necessary to replace the standard yoke with a short U joint yoke (p n 39385A 1). This yoke is not included and must be removed from the old unit or ordered separately. 1. 65 ratio Fits: MC I R MR Alpha One WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth