Quicksilver 864929A1 3-Inch Dry Joint Exhaust Riser Extension Kit for MerCruiser V6 V8 Raw Water Cooling

The Quicksilver 864929A1 is a genuine OEM 3-inch (76 mm) dry joint exhaust riser extension kit designed for MerCruiser V6 and V8 inboard marine engines with standard raw water cooling (RWC) and dry joint exhaust manifolds. This riser spacer kit installs between the exhaust manifold and the elbow to add 3 inches of vertical height, helping to reduce the risk of water backflow into the engine through the exhaust system.

Key Features:

• Genuine Quicksilver OEM part — manufactured by Mercury Marine to factory specifications
• 3-inch (76 mm) riser extension for dry joint exhaust manifold systems
• Designed for standard raw water cooling (RWC) applications
• Helps prevent exhaust water backflow into the engine
• Includes all necessary hardware and gaskets for installation
• Backed by Mercury Marine & Quicksilver's 1-year factory warranty against defects in materials and workmanship

Kit Includes:

• 2 × 3-inch riser spacers (P/N 864929)
• 2 × riser gaskets — closed (P/N 27-864850A1)
• 2 × riser gaskets — open (P/N 27-864547A1)
• 8 × mounting screws (P/N 10-865982077)
• 1 × bracket (P/N 863714T)

The Quicksilver 864929A1 riser kit is a direct OEM replacement part, ensuring a precise fit and reliable performance. Always replace riser gaskets in the same configuration as they were removed for proper sealing.