Sierra 18-0721 Mercruiser Open Riser Gasket
Sierra high-quality engine parts are designed to meet OEM specifications. Sierra Mercruiser dry joint open riser gasket.
- For standard cooling - full flow gasket
- Fits GM V-6 & V-8 engines with dry joint exhaust manifold (2002 & newer)
- 18-1845 Riser
- 18-1843 Manifold
- Mercruiser Stern Drive