Exhaust Systems - Mercruiser OEM Factory Exhaust Systems

Mercruiser OEM V8 BBC 454/7.4L and 502/8.2L Exhaust Manifold and Riser Kit w/out Spacer

• Direct OEM Manufactured Replacement for Mercruiser Big Block Chevy 454/502 Manifolds and Risers
• Manifolds and 4" Risers Constructed from Cast Iron and painted with black corrosion resistant paint.
• Replaces Mercruiser #807078T08 and 89011A8 Manifolds
• Replaces Mercruiser #807988Q03, 807988A03 and 44354A3 Risers

Mercruiser OEM V8 BBC 454/7.4L and 502/8.2L Exhaust Manifold and Riser Kit w/ 3" Spacer

• Direct OEM Manufactured Replacement for Mercruiser Big Block Chevy 454/502 Manifolds and Risers
• Manifolds and 4" Risers Constructed from Cast Iron and painted with black corrosion resistant paint.
• Replaces Mercruiser #807078T08 and 89011A8 Manifolds
• Replaces Mercruiser #807988Q03, 807988A03 and 44354A3 Risers

Mercruiser OEM V8 BBC 454/7.4L and 502/8.2L Exhaust Manifold and Riser Kit w/ 6" Spacer

• Direct OEM Manufactured Replacement for Mercruiser Big Block Chevy 454/502 Manifolds and Risers
• Manifolds and 4" Risers Constructed from Cast Iron and painted with black corrosion resistant paint.
• Replaces Mercruiser #807078T08 and 89011A8 Manifolds
• Replaces Mercruiser #807988Q03, 807988A03 and 44354A3 Risers

Mercruiser OEM V8 SBC 305/5.0L and 350/5.7L Exhaust Manifold and Riser Kit w/out Spacer

• Direct OEM Manufactured Replacement for Mercruiser Small Block Chevy 305/350 Manifolds and Risers
• Manifolds and 4" Risers Constructed from Cast Iron and painted with black corrosion resistant paint.
• Replaces Mercruiser #860246A10 and 860246Q11 Manifolds
• Replaces Mercruiser #807988Q03, 807988A03 and 44354A3 Risers

Mercruiser OEM V8 SBC 305/5.0L and 350/5.7L Exhaust Manifold and Riser Kit w/ 3 " Spacer

• Direct OEM Manufactured Replacement for Mercruiser Small Block Chevy 305/350 Manifolds and Risers
• Manifolds and 4" Risers Constructed from Cast Iron and painted with black corrosion resistant paint.
• Replaces Mercruiser #860246A10 and 860246Q11 Manifolds
• Replaces Mercruiser #807988Q03, 807988A03 and 44354A3 Risers

Mercruiser OEM V8 SBC 305/5.0L and 350/5.7L Exhaust Manifold and Riser Kit w/ 6" Spacer

• Direct OEM Manufactured Replacement for Mercruiser Small Block Chevy 305/350 Manifolds and Risers
• Manifolds and 4" Risers Constructed from Cast Iron and painted with black corrosion resistant paint.
• Replaces Mercruiser #860246A10 and 860246Q11 Manifolds
• Replaces Mercruiser #807988Q03, 807988A03 and 44354A3 Risers

Mercruiser OEM V8 SBC 350 Dry Joint Exhaust Manifold and 7 Degree Riser Kit w/out Spacer

• Direct OEM Manufactured Replacement for Mercruiser Small Block Chevy 350 Dry Joint Manifolds and Risers
• Manifolds and 4" Risers Constructed from Cast Iron and painted with black corrosion resistant paint.
• Replaces Mercruiser #865735A02 and 864308T01 Manifolds
• Replaces Mercruiser #865735A02 Risers
• Fits 2002 and newer 350/377 engines with dry joint exhaust serial 0M317000 and up.
• Fits 2004 and newer 305, 350 and 377 engines with dry joint exhaust serial 0W310000 and up.

Mercruiser OEM V8 SBC 350 Dry Joint Exhaust Manifold and 14 Degree Riser Kit w/out Spacer

• Direct OEM Manufactured Replacement for Mercruiser Small Block Chevy 350 Dry Joint Manifolds and Risers
• Manifolds and 4" Risers Constructed from Cast Iron and painted with black corrosion resistant paint.
• Replaces Mercruiser #865735A02 and 864308T01 Manifolds
• Replaces Mercruiser #864591T02 Risers
• Fits 2002 and newer 350/377 engines with dry joint exhaust serial 0M317000 and up.
• Fits 2004 and newer 305, 350 and 377 engines with dry joint exhaust serial 0W310000 and up.

• For select MerCruiser stern drive and inboard engines.
• E-coated for corrosion protection on internal coolant passages and exterior finish. For freshwater installations.
• Gasket is included with the manifold.
• Produced by Mercury Marine to our stringent original equipment manufacturer specifications to maximize the performance of your Mercury and Mariner outboard or MerCruiser stern drive

Exhaust manifold 860246Q11 is for use on the port or starboard (left or right) side of V-8 MerCruiser stern drive and inboard engines made by General Motors. It fits 305, 350 and 377 cid engines (model year 1983 through 2002) . Gasket included with the manifold. Gasket included with the manifold. For freshwater installations.

• For select MerCruiser stern drive and inboard engines.
• E-coated for corrosion protection on internal coolant passages and exterior finish. For use in freshwater installations.
• Gasket is included with the manifold.
• Produced by Mercury Marine to our stringent original equipment manufacturer specifications to maximize the performance of your Mercury and Mariner outboard or MerCruiser stern drive

Exhaust manifold 807078T08 is for use on the port or starboard (left or right) side of V-8 MerCruiser engines made by General Motors. It fits 454 or 502 cid engines (model year 1981 thru 2002) . Gasket included with the manifold. For freshwater installations.

• For select MerCruiser stern drive and inboard engines.
• Hot dipped and coated for corrosion protection on internal coolant passages and exterior finish. Can be used in freshwater or saltwater installations.
• Gasket is included with the manifold.
• Produced by Mercury Marine to our stringent original equipment manufacturer specifications to maximize the performance of your Mercury and Mariner outboard or MerCruiser stern drive

Exhaust manifold 860246A15 is for use on the port or starboard (left or right) side of V-8 MerCruiser stern drive and inboard engines made by General Motors. It fits 305, 350 and 377 cid engines (model year 1983 through 2002) . Gasket included with the manifold. Gasket included with the manifold. Can be used for freshwater or saltwater installations.

• For select MerCruiser stern drive and inboard engines.
• Features three catalyst exhaust design.
• Gasket is included with the manifold.
• Produced by Mercury Marine to our stringent original equipment manufacturer specifications to maximize the performance of your Mercury and Mariner outboard or MerCruiser stern drive

Exhaust manifold 8M0099070 is for use on MerCruiser 496 Magnum, 8.1S EC stern drive and inboard engines, 8.2L Magnum EC and 8.2L EC inboard engines (serial number 1A350340 through 2A051742). Features the three catalyst design. Gasket included with the manifold.

Exhaust Manifold Mercruiser 866178T01

Cast iron exhaust manifolds w/o water rail, Port or Starboard
Fits: MCM/MIE 8.1L & 8.2L non‑EC engines

Supercedes: 863127T1, 863127T02

• Converts exhaust manifolds with water rails to the newer style, cast iron manifolds without water rails.
• For select MerCruiser stern drive and inboard engines.
• Coated for corrosion protection on internal coolant passages and exterior finish.
• Gasket, drain plug, o-ring and drain elbow are included with the manifold.
• Produced by Mercury Marine to our stringent original equipment manufacturer specifications to maximize the performance of your Mercury and Mariner outboard or MerCruiser stern drive

Exhaust conversion kit 866178A02 converts exhaust manifolds with water rails to the newer style, cast iron manifolds without water rails. For use on 496 Magnum and 8.1S MerCruiser stern drive and inboard engines.

• For select MerCruiser stern drive and inboard engines.
• Hot dipped and coated for corrosion protection on internal coolant passages and exterior finish. Can be used in freshwater or saltwater installations.
• Gasket is included with the manifold.
• Produced by Mercury Marine to our stringent original equipment manufacturer specifications to maximize the performance of your Mercury and Mariner outboard or MerCruiser stern drive

Exhaust manifold 807078T10 is for use on the port or starboard (left or right) side of V-8 MerCruiser engines made by General Motors. It fits 454 or 502 cid engines (model year 1981 thru 2002) . Gasket included with the manifold. Can be used for freshwater or saltwater installations.

• Starboard side exhaust manifold featuring single catalyst design.
• For select MerCruiser stern drive and inboard engines.
• Coated for corrosion protection on internal coolant passages and exterior finish.
• Gasket is included with the manifold.
• Produced by Mercury Marine to our stringent original equipment manufacturer specifications to maximize the performance of your Mercury and Mariner outboard or MerCruiser stern drive

Exhaust manifold 8M0103773 is for the starboard side only on V-8 MerCruiser stern drive and inboard engines (3.5, 350 and 377 cid, model year 2008 and newer).

EXHAUST MANIFOLD Mercruiser 8M0064986

Supercedes: 8M0057655

EXHAUST MANIFOLD Mercruiser 8M0058664

EXHAUST MANIFOLD Mercruiser 8M0058663

• Replacement exhaust elbow with 4" outside diameter and seven degree down angle
• Hot dipped and top coated to prevent corrosion. Recommended for use in freshwater or saltwater installations.
• Produced by Mercury Marine to our stringent original equipment manufacturer specifications to maximize the performance of your Mercury and Mariner outboard or MerCruiser stern drive