Sierra 18-1997-1 Universal Center Riser Exhaust Manifold for GM V8 Small Block

The Sierra 18-1997-1 is a universal center riser exhaust manifold designed for GM V8 small block marine engines with 305 and 350 cubic inch displacement. This aftermarket replacement manifold is engineered to meet OEM specifications and provides reliable performance for a wide range of marine applications.

Construction and Features:

• Cast iron construction for maximum durability and heat resistance
• CNC machined for precise fitment and proper alignment
• Primed and painted finish for added corrosion protection
• Universal design fits either port or starboard side
• Includes all necessary gaskets and mounting hardware for easy installation
• Ready to install right out of the box

Compatible Engine Applications:

• Chris-Craft: 283, 302, 307, and 350 CID engines
• Crusader: 283 and 327 CID engines through 1964; 305, 307, and 350 CID engines 1965 and later
• Daytona: 200-283 and 300-327
• Flagship: 283, 327, and 350 CID engines
• Pacer: 305, 307, and 350 CID engines 1965 and later
• Mercury: 190, 198, 225, 250, 270, 228, 898, 260, 255, and 280 models
• OMC: 283, 305, 307, and 350 CID engines 1968-1980
• Volvo Penta: 307 and 350 CID engines

OEM Cross-References: Replaces Barr CHV-1-83, GLM 56230, Mallory 9-40110, Osco 994, Indmar 531027, and Marine Power 0994-000.

Recommended Accessories: Use with Sierra 18-0604 exhaust manifold gasket set. Compatible with various center riser elbows including Sierra 18-1907 and 18-1939 risers.

This manifold is backed by Sierra's comprehensive two-year limited warranty and is individually packaged to prevent damage during shipping.