Riser Gasket for Mercruiser 3.7L, 3.7LX, 165, 170, 180, 190, 27-18272

Exhaust Riser Gasket for Mercruiser 4 Cylinder Engines

Models 3.7L, 3.7LX, 165, 170, 180, 190 

Mercury Made 224 CID Engines, Not for GM Based Units.

*For Engines with Aluminium Exhaust Maniolds*

Replaces Mercruiser: 27-18272