Aftermarket Mercruiser 816575A3 Lower Unit Seal Kit
The Sierra 18-2646-1 Lower Unit Seal Kit contains the seals required when dismantling and resealing the lower unit or gearcase in Mercruiser applications. It replaces Mercruiser 816575A3.
Mercruiser Fitment
Suits Mercruiser engines:
Alpha One Gen IIÂ
Technical Specifications
- Brand: Sierra Marine
- Sierra Part Number: 18-2646-1
- Product Type: Lower Unit Seal Kit
- Application: Mercruiser
Kit Contents
- Drain Screw Gasket - Sierra 18-2430-9
- Drain Screw Gasket - Sierra 18-2945-9
- Seal Ring - Sierra 18-2944-9
- Gasket, Impeller - Sierra 18-2566-9
- O-Ring - Sierra 18-7159-9
- O-Ring - Sierra 18-7176-9
- O-Ring - Sierra 18-7168-9
- O-Ring - Sierra 18-7420-9
- O-Ring - Sierra 18-7413-9
- O-Ring - Sierra 18-74401-9
- Oil Seal - Sierra 18-2002
- Oil Seal - Sierra 18-2056
- Oil Seal - Sierra 18-2014
- Oil Seal - Sierra 18-2076
- Oil Seal - Sierra 18-2009
- Oil Seal - Sierra 18-2013
- Oil Seal - Sierra 18-2077
- Face Seal and Tool - Sierra 18-2599
- Gasket, Impeller Faceplate - Sierra 18-2564-1-9
Cross References & Alternative Products
- Mercruiser: 26-816575A1
- Mercruiser: 26-816575A3
- Mercruiser: 816575A3
Need help with fitment? Contact us with your engine model and serial number and we'll help check suitability.
Frequently Asked Questions
What is Sierra 18-2646-1?
Sierra 18-2646-1 is an aftermarket lower unit seal kit for Mercruiser applications.
Which part numbers cross-reference Sierra 18-2646-1?
This listing cross-references Mercruiser 26-816575A1, Mercruiser 26-816575A3 and Mercruiser 816575A3. See the Cross References & Alternative Products section above for linked alternatives where available.
How can I check whether Sierra 18-2646-1 fits my Mercruiser application?
Contact us with your engine model and serial number and we'll help check suitability.
Australian Dollars
