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Boating > Engine Parts > Manifolds >

Boat engine parts. Alternators, manifolds, water pumps and more for your boat engine repair. Gander Mountain has the largest selection of boat engine parts available online. Our boat engine parts inventory also includes boat starters, outboard accessories and boat engine tune up kits. So, if it's a water pump, new starter or spark plugs for your boat engine, check out our selection first!

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Replacement Riser Elbow for Mercruiser V8 and 4-Cyl. Manifolds

Replacement Riser Elbow for Mercruiser V8 and 4-Cyl. Manifolds

Key Features
  • For V8 Manifold w/End Risers

  • For V8 Manifold Ford 302/351 w/End Risers

  • For Mercruiser 4-Cylinder Manifolds

$99.99
Mercruiser V6 Manifold With Center Riser

Mercruiser V6 Manifold With Center Riser

Key Features
  • 4.3 Liter

  • Center Riser

  • Fits either side of the engine

  • Mercruiser Part # 99746A8

  • Sierra Part # 18-1952

$219.99
$209.96
Sierra Exhaust Manifold Gasket Set For Mercruiser Engine, Sierra Part #18-4349

Sierra Exhaust Manifold Gasket Set For Mercruiser Engine, Sierra ...

Key Features
  • Sierra Part #18-4349

  • Exhaust manifold gasket set

  • For Mercruiser engine

$17.99
$16.99
Sierra Manifold End Cap Gasket, Sierra Part #18-2850-9

Sierra Manifold End Cap Gasket, Sierra Part #18-2850-9

Key Features
  • Sierra Part #18-2850-9

  • Manifold end cap gasket

$6.99
$5.99
Sierra Exhaust Manifold Gasket For OMC Engine, Sierra Part #18-1228

Sierra Exhaust Manifold Gasket For OMC Engine, Sierra Part #18-...

Key Features
  • Sierra Part #18-1228

  • Exhaust manifold gasket

  • For OMC engine

$3.59
$2.96
Mercruiser Riser Gasket

Mercruiser Riser Gasket

Key Features
  • For Mercruiser V6 V8 Manifolds w/Center Risers

  • Mercruiser Part # 27-41813

  • Sierra Part #18-0897

$4.74
Replacement OMC V8 Port Manifold

Replacement OMC V8 Port Manifold

Key Features
  • End riser for 800 series, 5.0L and 5.7L engines

  • OMC part # 912442

$159.99
OMC V8 Thermostat w/Gasket

OMC V8 Thermostat w/Gasket

Key Features
  • Direct replacement manifolds with end riser

  • For use with all models listed

$15.99
Replacement Mercruiser V8 Manifold, Sierra 18-1953-2

Replacement Mercruiser V8 Manifold, Sierra 18-1953-2

Key Features
  • For replacement of Mercruiser V8 Manifold

  • For manifolds with center riser

  • Fits either port or starboard side

  • Manifold gasket and elbow gasket included

  • Sierra Part No. 18-1953-2

$144.99
Riser Elbow 15, 3" hose; Mercruiser V6 V8 Manifolds With Center Risers

Riser Elbow 15°, 3" hose; Mercruiser V6 & V8 ...

Key Features
  • Mercruiser Part # 9504A3

  • For replacement of Mercruiser V6 and V8 Manifolds

$129.99
Replacement Manifold Gasket For Mercruiser. Replaces Mercruiser #27-33395.

Replacement Manifold Gasket For Mercruiser. Replaces Mercruiser #...

Key Features
  • For Use On Mercruiser and OMC Manifolds

  • Compatible with 140 hp engine

  • Compatible with 800 series, 5.0L and 5.7L engines

$11.99
Mercruiser Manifold for V8 Ford 302/351 w/End Riser, port side

Mercruiser Manifold for V8 Ford 302/351 w/End Riser, port side

Key Features
  • Mercruiser part # 65604A4

  • Sierra part # 18-1958

$399.99
Sierra Exhaust Manifold Mounting Kit For Mercruiser Engine, Sierra Part #18-8531

Sierra Exhaust Manifold Mounting Kit For Mercruiser Engine, ...

Key Features
  • Sierra Part #18-8531

  • Exhaust manifold mounting kit

  • For Mercruiser engine

$39.99
Sierra Intake Manifold Gasket Set For Mercury Marine/OMC, Sierra Part #18-0465

Sierra Intake Manifold Gasket Set For Mercury Marine/OMC, Sierra ...

Key Features
  • Sierra Part #18-0465

  • Intake manifold gasket set

  • For Mercury Marine/OMC engine

$39.99
Sierra Manifold For Barr Engine, Sierra Part #18-1964

Sierra Manifold For Barr Engine, Sierra Part #18-1964

Key Features
  • Sierra Part #18-1964

  • Manifold

  • For Barr engine

$239.99
Thermostat Kit With Gasket for Mercruiser, 18-3651

Thermostat Kit With Gasket for Mercruiser, 18-3651

Key Features
  • Mercruiser V8 Manifold

  • Mercruiser V8 Manifold Ford 302/351 w/End Risers

  • Mercruiser V6 V8 Manifolds w/Center Risers

$14.99
Replacement Manifold, Mercruiser V8 Manifold With End Riser, port side

Replacement Manifold, Mercruiser V8 Manifold With End Riser, port...

Key Features
  • Mercruiser V8 Manifolds with end riser

  • Mercruiser part #77234A2

$319.99
Replacement Manifold, Mercruiser V8 Manifold With End Riser, starboard side

Replacement Manifold, Mercruiser V8 Manifold With End Riser, ...

Key Features
  • Mercruiser V8 Manifold with end riser

  • Mercruiser part #77235A2

$289.99
Replacement Block-Off Plate for Mercruiser V8 Manifolds

Replacement Block-Off Plate for Mercruiser V8 Manifolds

Key Features
  • For Mercruiser V8 Manifold w/End Risers

  • For MerCruiser V-8 Ford 302/351 with End Risers

  • Mercruiser Part # 60207

  • Sierra part # 18-4008

$8.49
Mercruiser 2.5 Liter Upper Exhaust Hose

Mercruiser 2.5 Liter Upper Exhaust Hose

Key Features
  • For V8 Manifold w/End Riser

  • For 4-Cylinder Manifold

  • Sierra Part #18-2762

  • Mercruiser Part # 70981A3

$29.99
OMC V8 Riser Gasket

OMC V8 Riser Gasket

Key Features
  • Replacement manifolds with end riser

  • For use with 800 series, 5.0L and 5.7L engines

$3.99
Mercruiser Gasket for V6 Manifold w/ Center Riser, each

Mercruiser Gasket for V6 Manifold w/ Center Riser, each

Key Features
  • For Mercruiser V6 Manifold w/Center Riser

  • Mercruiser Part # 27-99757

  • Sierra Part #18-2909

$6.64
Mercruiser Manifold for V8 Ford 302/351 w/End Riser, starboard side

Mercruiser Manifold for V8 Ford 302/351 w/End Riser, starboard ...

Key Features
  • Mercruiser part # 65603A4.

  • Sierra part # 18-1962-1.

$334.99
Mericruiser Gasket Set for V8 Manifold Ford 302/351 with End Riser

Mericruiser Gasket Set for V8 Manifold Ford 302/351 with End ...

Key Features
  • Mercruiser part # 27-54566A1

  • Sierra part # 18-4399

$24.99
Sierra Manifold For Barr Engine, Sierra Part #18-1997-1

Sierra Manifold For Barr Engine, Sierra Part #18-1997-1

Key Features
  • Sierra Part #18-1997-1

  • Manifold for Barr engine

$174.99
Sierra Manifold For Pleasurecraft Engine, Sierra Part #18-1996

Sierra Manifold For Pleasurecraft Engine, Sierra Part #18-1996

Key Features
  • Sierra Part #18-1996

  • Manifold

  • For Pleasurecraft engine

$259.99
Sierra Exhaust Manifold Gasket For Mercury Marine/OMC, Sierra Part #18-0956

Sierra Exhaust Manifold Gasket For Mercury Marine/OMC, Sierra ...

Key Features
  • Sierra Part #18-0956

  • Exhaust manifold gasket

  • For Mercury Marine/Chrysler Inboard/OMC engine

$10.89
Sierra Manifold For Mercury Marine Engine, Sierra Part #18-1954-1

Sierra Manifold For Mercury Marine Engine, Sierra Part #18-1954-1...

Key Features
  • Sierra Part #18-1954-1

  • Manifold

  • For Mercury Marine engine

$429.99
Sierra Intake Manifold For GM Engine, Sierra Part #18-7627

Sierra Intake Manifold For GM Engine, Sierra Part #18-7627

Key Features
  • Sierra Part #18-7627

  • Intake manifold

  • For GM engine

$489.99
Sierra Intake Manifold For GM Engine, Sierra Part #18-7628

Sierra Intake Manifold For GM Engine, Sierra Part #18-7628

Key Features
  • Sierra Part #18-7628

  • Intake manifold

  • For GM engine

$514.99
Sierra Manifold For Volvo Engine, Sierra Part #18-1932

Sierra Manifold For Volvo Engine, Sierra Part #18-1932

Key Features
  • Sierra Part #18-1932

  • Manifold

  • For Volvo engine

$279.99
Sierra Intake Manifold Gasket For OMC Engine, Sierra Part #18-0142

Sierra Intake Manifold Gasket For OMC Engine, Sierra Part #18-...

Key Features
  • Sierra Part #18-0142

  • Intake manifold gasket

  • For OMC engine

$12.99

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