Mercury MerCruiser 3″ Exhaust Riser Extension Kit (Dry Joint)

The Mercury MerCruiser 864929A3 Riser Kit is a genuine OEM 3-inch exhaust riser extension kit designed for Dry Joint exhaust systems on selected MerCruiser V6 and V8 engines. By increasing riser height, the kit helps reduce the potential for water entering the engine through the exhaust system while maintaining optimal exhaust flow and cooling performance.

Manufactured to Mercury Marine specifications, this kit includes spacers, gaskets, mounting hardware, and associated components required for installation on compatible applications. It is intended for use with 14-degree Dry Joint risers and standard (raw water) cooling systems.

Features:

• Genuine Mercury Marine OEM part
• 3″ (76mm) riser extension kit
• Designed for Dry Joint exhaust systems
• Compatible with 14° risers
• Includes spacers, gaskets and mounting hardware
• Corrosion-resistant marine-grade construction
• Helps reduce water reversion risk

Benefits:

• Improves exhaust system protection
• Helps prevent water intrusion into the engine
• Maintains proper exhaust flow
• OEM fit and reliability
• Suitable for both freshwater and saltwater applications

Kit Contents:

• 2 x 3″ riser spacers
• Gaskets
• Mounting hardware
• Installation components as supplied by Mercury Marine

Typical Applications:

• MerCruiser 4.3L
• MerCruiser 5.0L
• MerCruiser 5.7L
• MerCruiser 6.2L
• 350 MAG
• 357 MAG
• 383 MAG Stroker

(Engine serial number verification recommended before ordering.)

Category:
Exhaust System Components

Tags:
Mercury, MerCruiser, Exhaust Riser, Riser Extension, Dry Joint Exhaust, Exhaust Spacer, 864929A3, 4.3L, 5.0L, 5.7L, 6.2L, 350 MAG, OEM Mercury

SKU:
864929A3