4 Cylinder Exhaust Manifold to Head Gasket | Sierra 18-2912-1

4 Cylinder Exhaust Manifold to Head Gasket | Sierra 18-2912-1

Combination intake & exhaust manifold gasket fits various early model GM 3.0L 4 cylinder marine engines.

• Exhaust manifold gasket
• For Mercruiser and OMC GM 3.0L 181 cu. in. marine engines
• Fits Mercruiser 140 model engines
• Will not work with all 3.0L engines - refer to engine model and serial for correct gasket
• Intake ports have two square ports and two ports with the corners blocked
• Exhaust ports are all square
• Replaces Mercury 27-53354
• Replaces OMC 908079
• Replaces Mallory 9-61417
• Replaces Sierra 18-1203, 18-2912