Sierra 18-1937 Exhaust Elbow Riser for MerCruiser 3.7L

The Sierra 18-1937 is a cast iron exhaust elbow riser designed specifically for MerCruiser 4-cylinder 3.7L engines (224 cubic inches) with aluminum exhaust manifolds. This precision-engineered replacement part serves as a direct OEM equivalent to Mercury Marine part number 98562A6.

Key Features:

• Cast iron construction with black painted finish for durability and corrosion resistance
• Elbow mounting bolt pattern measures 3-1/8 inches x 3-1/2 inches
• Designed for center rise exhaust manifold configurations
• Pre-primed and painted, ready to install right out of the box
• Compatible with MerCruiser models 165, 170, 180, and 190

Important: This exhaust riser is specifically engineered for use with aluminum manifolds only. Some MerCruiser 4-cylinder engines feature cast iron manifolds and require a different exhaust riser. Verify your manifold type before ordering to ensure proper fitment.

Recommended Installation Components: For complete installation, use with Sierra 18-0881 exhaust elbow mounting gasket and Sierra 18-8530 mounting kit (sold separately).