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Exhaust Systems - Mercruiser OEM Factory Exhaust Systems

GM V8 BB Exhaust Manifold System Set

Your Price:
$789.99

This Part has options, please click the button below to order.

Stock Mercury OEM Big Block Chevy 454/502 Cast Iron 4" Exhaust Manifold and Riser Kit - 807078T08

525-454

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

Qty Description OEM #
2 Exhaust Elbow 807988Q03
2 Exhaust Manifold Assy. (with  drain plug) 807078T08
2 Gasket-Elbow 27-863724 (2 Slot, Restricted) or 27-863726 (4 Slot, Full Flow), or 27-860321 (Block Off, For Closed Cooling)
2 Gasket-Manifold 27-46820
  • 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

GM V8 BB Exhaust Manifold System Set

Your Price:
$1,245.99

This Part has options, please click the button below to order.

Stock Mercury OEM Big Block Chevy 454/502 Cast Iron 4" Exhaust Manifold, 3" Spacer and Riser Kit - 807078T08

525-4543

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

Qty Description OEM #
2 Exhaust Elbow 807988Q03
2 Exhaust Manifold Assy. (with  drain plug) 807078T08
1 3" Spacer Kit with Elbow Gaskets 93320A13
2 Gasket-Manifold 27-46820
  • 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

GM V8 BB Exhaust Manifold System Set

Your Price:
$1,399.99

This Part has options, please click the button below to order.

Stock Mercury OEM Big Block Chevy 454/502 Cast Iron 4" Exhaust Manifold, 6" Spacer and Riser Kit - 807078T08

525-4546

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

Qty Description OEM #
2 Exhaust Elbow 807988Q03
2 Exhaust Manifold Assy. (with  drain plug) 807078T08
1 6" Spacer Kit with Elbow Gaskets 93322A12
2 Gasket-Manifold 27-46820
  • 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

GM V8 BB Exhaust Manifold System Set

Your Price:
$1,099.99

This Part has options, please click the button below to order.

Stock Mercury OEM Small Block Chevy 305 / 350 Cast Iron 4" Exhaust Manifold, 3" Spacer and Riser Kit

525-3503

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

Qty Description OEM #
2 Exhaust Elbow 807988Q03
2 Exhaust Manifold Assy. (with  drain plug) 860246Q11
1 3" Spacer Kit with Elbow Gaskets 93320A13
2 Gasket-Manifold 27-33395
  • 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

GM V8 BB Exhaust Manifold System Set

Your Price:
$1,279.99

This Part has options, please click the button below to order.

Stock Mercury OEM Small Block Chevy 305 / 350 Cast Iron 4" Exhaust Manifold, 6" Spacer and Riser Kit

525-3506

Mercruiser OEM V8 SBC 305/5.0L and 350/5.7L Exhaust Manifold and Riser Kit w/ 9 " Spacer

Qty Description OEM #
2 Exhaust Elbow 807988Q03
2 Exhaust Manifold Assy. (with  drain plug) 860246Q11
1 3" Spacer Kit with Elbow Gaskets 93322A12
2 Gasket-Manifold 27-33395
  • 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

GM V8 BB Exhaust Manifold System Set

Your Price:
$699.99

This Part has options, please click the button below to order.

Stock Mercury OEM Small Block Chevy 305 / 350 Cast Iron 4" Exhaust Manifold and Riser Kit - 860246A10

525-350

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

Qty Description OEM #
2 Exhaust Elbow 807988Q03
2 Exhaust Manifold Assy. (with  drain plug) 860246Q11
2 Gasket-Elbow 27-863724 (2 Slot, Restricted) or 27-863726 (4 Slot, Full Flow), or 27-860321 (Block Off, For Closed Cooling)
2 Gasket-Manifold 27-33395
  • 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

GM V8 BB Exhaust Manifold System Set

Your Price:
$1,229.99

This Part has options, please click the button below to order.

Stock Mercury OEM Small Block Chevy 350 Dry Joint Cast Iron 4" Exhaust Manifold and 7 Degree Riser Kit - 865735A02

525-35007

Mercruiser OEM V8 SBC 350 Dry Joint Exhaust Manifold and 7 Degree Riser Kit w/out Spacer (2002- Early 2005)

Qty Description OEM #
2 Exhaust Elbow 864309T02 (7 Degree)
2 Exhaust Manifold Assy. (with  drain plug) 865735A02
2 Gasket-Elbow (2 Slot, Restricted) or (4 Slot, Full Flow), or (Block Off, For Closed Cooling)
2 Gasket-Manifold 27-33395
  • 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 - Early 2005 systems with 7 Degree risers. Fits Serial Numbers 0M600000 - OW309999.

GM V8 BB Exhaust Manifold System Set

Your Price:
$1,319.99

This Part has options, please click the button below to order.

Stock Mercury OEM Small Block Chevy 350 Dry Joint Cast Iron 4" Exhaust Manifold and Riser Kit - 865735A02

525-35014

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

Qty Description OEM #
2 Exhaust Elbow 864591T02 (14 Degree)
2 Exhaust Manifold Assy. (with  drain plug) 865735A02
2 Gasket-Elbow (2 Slot, Restricted) or (4 Slot, Full Flow), or (Block Off, For Closed Cooling)
2 Gasket-Manifold 27-33395
  • 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.

MANIFOLD KIT-EXH Mercruiser 860246Q11
Your Price:
$213.98

Exhaust Manifold 860246Q11 - Port or Starboard - For Use on Port or Starboard Side of V-8 MerCruiser Stern Drive and Inboard Engines Made by General Motors

530-860246Q11

  • 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.


Exhaust Manifold Mercruiser 807078T08
Your Price:
$284.78

Exhaust Manifold 807078T08 - Port or Starboard - For Use on Port or Starboard Side of V-8 MerCruiser Engines Made by General Motors.

530-807078T08

  • 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.


Exhaust Manifold Assembly 860246A15
Your Price:
$298.58

Exhaust Manifold 860246A15 - Port or Starboard - For Use on Port or Starboard Side of V-8 MerCruiser Stern Drive and Inboard Engines Made by General Motors

530-860246A15

  • 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.


Exhaust Manifold Mercruiser 8M0045258
Your Price:
$639.99

Exhaust Manifold 8M0099070 - For MerCruiser 496 Magnum, 8.1S EC Stern Drive and Inboard Engines, 8.2L Magnum EC and 8.2L EC Inboard Engines

530-8M0099070

  • 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
Your Price:
$571.50

Exhaust Manifold Mercruiser 866178T01

525-866178T01

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


Exhaust Manifold Mercruiser 866178A02
Your Price:
$717.99

Exhaust Manifold Conversion Kit 866178A02 - For Use on 496 Magnum and 8.1S MerCruiser Stern Drive and Inboard Engines

530-866178A02

  • 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.


Exhaust Manifold Mercruiser 807078T10
Your Price:
$465.68

Exhaust Manifold 807078T10 - Port or Starboard - For Use on Port or Starboard Side of V-8 MerCruiser Engines Made By General Motors

530-807078T10

  • 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.


Exhaust Manifold 8M0103773 - Starboard Side - EC - Single Catalyst - For Starboard Side Only on V-8 MerCruiser Stern Drive and Inboard Engines
Your Price:
$599.99

Exhaust Manifold 8M0103773 - Starboard Side - EC - Single Catalyst - For Starboard Side Only on V-8 MerCruiser Stern Drive and Inboard Engines

530-8M0103773

  • 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 MANIFOLDS 8M0066812
Your Price:
$1,047.92

EXHAUST MANIFOLDS 8M0066812

525-8M0066812

EXHAUST MANIFOLDS Mercruiser 8M0066812


EXHAUST MANIFOLD 8M0070517
Your Price:
$1,020.60

EXHAUST MANIFOLD 8M0070517

525-8M0070517

EXHAUST MANIFOLD Mercruiser 8M0070517


EXHAUST MANIFOLD 8M0064986
Your Price:
$322.07

EXHAUST MANIFOLD 8M0064986

525-8M0064986

EXHAUST MANIFOLD Mercruiser 8M0064986

Supercedes: 8M0057655


EXHAUST MANIFOLD 8M0058664
Your Price:
$2,187.38

EXHAUST MANIFOLD 8M0058664

525-8M0058664

EXHAUST MANIFOLD Mercruiser 8M0058664