U-joint seal o-ring 8M0214974 is for use on MerCruiser Bravo u-joint seal retainer. It also fits 75-125hp DFI and 40-60hp Mercury EFI outboard propshaft bearing carrier. Replace o-rings when installing or servicing u-joints or propeller shaft bearing carriers. Immediately replace damaged or worn o-rings. See your owner's manual for application and installation information. The Quicksilver brand has been the marine industry leader in delivering premium engine lubricants, accessories and original equipment replacement parts for more than 65 years. It applies the same quality standards as a supplier of lubricants and replacement parts for many original equipment brands in the powersports industries. Quicksilver has earned a loyal following by providing the highest quality products, validated through some of the most rigorous environments and testing procedures. No aftermarket company comes close to matching the level of research and design that goes into Quicksilver products. Buying Quicksilver is buying performance, protection and peace of mind.