Quicksilver 864929A3 3-Inch Dry Joint Exhaust Riser Extension Kit for MerCruiser V6/V8

The Quicksilver 864929A3 is an OEM 3-inch (76 mm) riser extension kit engineered specifically for MerCruiser stern drive and inboard marine engines equipped with dry joint center-rise exhaust manifolds and standard cooling. This kit installs between the exhaust manifold and elbow to add critical vertical height to the exhaust riser, significantly reducing the risk of water backflow into the engine through the exhaust system.

Key Features:

• 3-inch (76 mm) riser extension height for increased exhaust lift
• Designed exclusively for dry joint exhaust manifolds — not compatible with wet joint systems
• Genuine Quicksilver OEM part — manufactured to Mercury Marine factory specifications
• Complete kit includes 3-inch spacers, gaskets, and mounting hardware
• Compatible with 14-degree riser configurations
• Helps prevent potentially costly water ingestion damage to the engine

Cross-Reference Part Numbers:

• Mercury/Quicksilver: 864929A 3 / 864929A3
• Sierra Marine: 18-1847K
• Recmar Marine: MAR929
• GLM: 50370
• Barr Marine: MC-20-864929A3

As a genuine Quicksilver OEM replacement part, the 864929A3 riser kit is backed by Mercury Marine's reputation for quality and is the ideal choice for restoring proper exhaust height and engine protection on eligible MerCruiser V-6 and V-8 stern drive and inboard applications.