Sierra 18-1843 Dry Joint Exhaust Manifold for MerCruiser V8 Engines

The Sierra 18-1843 is a premium cast iron exhaust manifold designed specifically for MerCruiser marine V8 engines with dry joint exhaust systems. This direct OE replacement manifold is manufactured to exact specifications and is fully interchangeable with original equipment parts.

Key Features:

• Dry joint style design for 2002 and newer MerCruiser engines
• Fits GM V8 engines: 305, 350, 377 CID (5.0L, 5.7L, and 6.2L)
• 100% leak tested for quality assurance
• Includes manifold-to-head gaskets, mounting bolts, and brass plugs
• Primed and painted for enhanced durability and corrosion protection
• CNC machined for proper gasket mating surfaces and precision tolerances
• Ready to install out-of-the-box

Replaces OEM Part Numbers: MerCruiser 865735A02, 865049T01, 864308T01, 8M0185794

Compatible Risers: Use with Sierra 18-1845 riser and appropriate riser gaskets (18-0720 closed, 18-0721 open, or 18-0722 restricted).

Backed by Sierra's comprehensive warranty, this exhaust manifold delivers reliable performance and long service life in demanding marine environments. Note: Riser gasket sold separately.