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Sierra > Boating > Engine Parts >

Sierra>Boating>Engine Parts>

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 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
Conventional Ignition Switch

Conventional Ignition Switch

Key Features
  • Moisture proof

  • 3-position starter switch

  • Accommodates up to 1-1/8" thick panels

  • For most I/Os

  • Comes with 2 keys

$17.99
Marine Outboard Alternator Rectifier - 3-Post Mercury Rectifier

Marine Outboard Alternator Rectifier - 3-Post Mercury Rectifier

Key Features
  • Mercury #62351A1, 62351A2

  • New! Not rebuilt

$23.99
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/Mercury Tilt and Trim Pump Motor

Mercruiser/Mercury Tilt and Trim Pump Motor

Key Features
  • Replacement tilt and trim pump motor

  • For Mercruiser inboard/outboards

  • For Mercury 225 - 275 hp outboards w/oildyne pump

$152.99
Johnson/Evinrude Tilt and Trim Pump Motor

Johnson/Evinrude Tilt and Trim Pump Motor

Key Features
  • OMC tilt and trim pump motor

  • Used on outboards since 1982

  • Two-wire lead

  • Replaces OMC #394176, 391264, 393988, and 985237

$94.99
Quicksilver Trim Tab Anode, AP 4004

Quicksilver Trim Tab Anode, AP 4004

Key Features
  • For use with Alpha 1, Mercury, Mariner, and Force

$15.99
Upper Water Pump Kit

Upper Water Pump Kit

Key Features
  • Contains parts needed to replace upper water pump:

  • Housing, impeller, plate, seal, gaskets, o-rings

$29.99
Mercury Lower Unit Gear Case Drain Plug 18-2244

Mercury Lower Unit Gear Case Drain Plug 18-2244

Key Features
  • Fits most Mercury lower units

  • Made of stainless steel

  • Sierra 18-2244

$2.99
Sierra Outboard Starter for Johnson/Evinrude Engines: ('77-'85) 150-235 hp V-6

Sierra Outboard Starter for Johnson/Evinrude Engines: ('77-'85) ...

Key Features
  • Brand new, not rebuilt!

  • Meets or exceeds OEM marine specifications

  • For use with Johnson/Evinrude Engines

$174.99
Water Pump Kit - Johnson/Evinrude

Water Pump Kit - Johnson/Evinrude

Key Features
  • Kit contains:

  • Impeller, impeller key, impeller gasket,

  • Grommets, rubber seal, stainless steel hardware,

  • Cup insert, o-rings, and wear plate

$69.99
OMC 4-Cylinder Manifold Elbow Gasket

OMC 4-Cylinder Manifold Elbow Gasket

Key Features
  • Port and starboard

  • Fits most 140 hp 3.0L 181 CID

  • Direct replacement for OMC 984054

$5.54
Electronic Conversion Kit Ford GM V-8 Engines - Mallory

Electronic Conversion Kit Ford & GM V-8 Engines - Mallory

Key Features
  • Easily installed

  • Not affected by oil, heat, dirt, or moisture

  • Not for use in OMC engines w/shift assist module

  • Distributor cap and rotor not included

$139.99
Mercury Lower Unit Magnetic Drain Plug 18-2375

Mercury Lower Unit Magnetic Drain Plug 18-2375

Key Features
  • Fits most Mercury lower units

  • Magnetic drain plug

  • Sierra 18-2375

$5.99
Inboard Engine Circulating Pump, Small Block GM V8, 283-350 CID; V6, 262 CID

Inboard Engine Circulating Pump, Small Block GM V8, 283-350 CID; ...

Key Features
  • Powder-coated; resists saltwater, rust corrosion

  • Brass bi-directional impellers

  • Stainless steel and/or brass hardware and plates

  • Made in USA

$89.99
External Trim Hose for Mercruiser Sterndrives

External Trim Hose for Mercruiser Sterndrives

Key Features
  • Fits Mercruiser I S/N 2062141-6225576

  • Fits Mercruiser TR/TRS S/N 4794900 and later

  • Fits all Mercruiser III and Super Speedmaster

$21.99
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

$12.99
Aqua Power Complete Performance Marine Tune-Up Kit

Aqua Power Complete Performance Marine Tune-Up Kit

Key Features
  • Includes cap, rotor, points, and condenser

  • For Mercruiser V-6 engines with:

  • Thunderbolt IV ignition systems

$27.99
Aqua Power Complete Performance Marine Tune-Up Kit

Aqua Power Complete Performance Marine Tune-Up Kit

Key Features
  • Includes cap, rotor, points, and condenser

  • For MerCruiser V-8 engines with:

  • Thunderbolt IV ignition systems

$29.99

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