replacementkits.com - brand fits mercruiser u-joint bellows for alpha one gen ii drives replaces 816431a1 & 18-2747 - replacementkits.com <b>replacement kits brand mercruiser u-joint bellows for alpha one gen ii drives replaces 816431a1 & 18-2747 </b> <br> <br> 1 bellows, 1 hose clamp & 1 sleeve (replaces 816607) <br> meets oem specifications overall length and bellow<br> fits alpha one gen ii drives 1991 & up <br> serial #’s 0d469859 - 0f679999 ; of680000 - ok999999 & ol100040 & up <br> replaces oem# 816431a1 , glm 89180 , sierra 18-2747 & mallory 9-72704 <br> replacement kits brand aftermarket part 100 % satisfaction guaranteed