The Sierra 18-21006 Gimbal Bearing replaces Mercruiser 30-862540A04, Mercruiser 30-862540A3, Mercruiser 30-862540T1 for Mercruiser applications. It supports the sterndrive input shaft through the transom assembly and allows smooth shaft rotation.
Suits Mercruiser drives:
Alpha Gen II (1998+), Bravo I/II/III & X/XR/XZ (1996+)
This is a non-greasable bearing.
Need help with fitment? Contact us with your engine model and serial number and we'll help check suitability.
What is Sierra 18-21006?
Sierra 18-21006 is an aftermarket gimbal bearing for Mercruiser applications.
Which part numbers cross-reference Sierra 18-21006?
This listing cross-references Mercruiser 30-862540A3, Mercruiser 879194A01, Mercruiser 30-862540A04 and Mercruiser 30-862540T1. See the Cross References & Alternative Products section above for linked alternatives where available.
How can I check whether Sierra 18-21006 fits my Mercruiser application?
Contact us with your engine model and serial number and we'll help check suitability.
Australian Dollars
