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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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T-H Marine Atlas Hydraulic Jack Plate with 10" Setback

T-H Marine Atlas Hydraulic Jack Plate with 10" Setback

Key Features
  • High-tech and high-speed jack plate

  • Handles most V6 outboards up to 350 hp

  • Lifts from bottom to top in 8 seconds

  • One-piece design installs easily

  • Self-lubricating rods require no grease

$1,124.99
CMC PT-35 Electric Hydraulic Tilt and Trim For Up To 35 HP

CMC PT-35 Electric Hydraulic Tilt and Trim For Up To 35 HP

Key Features
  • Improved fuel efficiency

  • 5-1/2" set back for boat performance

  • 84 trim and tilt

  • Rated for 35 hp and smaller motors

  • Weighs only 24 lbs.

$599.99
Cook Manual Transom Jack

Cook Manual Transom Jack

Key Features
$279.99
HelmsMate U-Model Motor Extension Handle, 37" - 51"

HelmsMate U-Model Motor Extension Handle, 37" - 51"

Key Features
  • All-metal joint for push-and-pull steering

  • Fits gas or electric motors up to 15 HP

  • Marine-grade aluminum and stainless steel

  • Lockout sleeve converts it to a straight extension

  • Adjustable length: 37" - 51"

$49.99
Sierra Piston Kit For Mercury Marine Engine, Sierra Part #18-4644

Sierra Piston Kit For Mercury Marine Engine, Sierra Part #18-4644...

Key Features
  • Sierra Part #18-4644

  • Piston kit

  • For Mercury Marine engine

$74.99
Sierra Piston Kit For Mercury Marine Engine, Sierra Part #18-4643

Sierra Piston Kit For Mercury Marine Engine, Sierra Part #18-4643...

Key Features
  • Sierra Part #18-4643

  • Piston kit

  • For Mercury Marine engine

$74.99
Quicksilver Power Tune Engine Cleaner, 12 oz.

Quicksilver Power Tune Engine Cleaner, 12 oz.

Key Features
  • Cleans carbon, gum, and varnish deposits

  • Helps restore lost power to gasoline engines

  • Improves fuel/air flow

  • For 2 and 4-cycle engine applications

$9.99
Sierra Ignition Switch For Mercury Engine, Sierra Part MP52000

Sierra Ignition Switch For Mercury Engine, Sierra Part MP52000

Key Features
  • Sierra Part MP52000

  • Replaces Mercury 87-88107A5

  • 3-Position OFF/RUN/START

  • Push To Choke

  • 6 Color-Coded Wire Leads/Potted

$34.99
Sierra Small Engine Tachometer/Hourmeter

Sierra Small Engine Tachometer/Hourmeter

Key Features
  • Small engine tachometer/hourmeter

  • Great for 2 or 4-stroke engines

  • No power or ground required

  • Waterproof and shockproof design

$29.99
Shields 2-7/8" Marine Exhaust/Water Hose, 6-1/4'L

Shields 2-7/8" Marine Exhaust/Water Hose, 6-1/4'L

Key Features
  • Sierra Part #116-200-2781

  • Reinforced with synthetic cord

  • Heavy-walled rubber

  • Resists engine heat, fumes, ozone, and more

$64.99
Sierra High Performance Gear Lube, Sierra Part #18-9650-2

Sierra High Performance Gear Lube, Sierra Part #18-9650-2

Key Features
  • Sierra Part #18-9650-2

  • High performance gear lube

  • Quart

$11.99
Sierra Fuel Filter For Mercury Marine/Yamaha Engine, Sierra Part #18-7845

Sierra Fuel Filter For Mercury Marine/Yamaha Engine, Sierra Part...

Key Features
  • Sierra Part #18-7845

  • Fuel filter

  • For Mercury Marine/Yamaha engine

$5.89
Complete Upper Water Pump Kit For Mercury/Mariner

Complete Upper Water Pump Kit For Mercury/Mariner

Key Features
  • Everything needed to replace the upper water pump

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

$34.99
Sierra MagForce Marine Spark Plug Wire Leads, Sierra Part #18-8839-1

Sierra MagForce Marine Spark Plug Wire Leads, Sierra Part #18-...

Key Features
  • Sierra Part #18-8839-1

  • MagForce Spark Plug Wire Set

  • Johnson/Evinrude (OMC/BRP) 90, 115 hp OBs

  • Two 14" plug wires

  • Two 16" plug wires

$34.99
Detmar Water-Resistant 4" In-Line Blower

Detmar Water-Resistant 4" In-Line Blower

Key Features
  • Five-blade, bullet-nosed impeller

  • Cambered stator

  • Minimum of turbulence

  • Corrosion-proof plastic housings

$29.99
Sierra Grease Gun, Sierra Part #18-9783

Sierra Grease Gun, Sierra Part #18-9783

Key Features
  • Sierra Part #18-9783

  • Grease gun

  • 3-oz. tube of grease

$29.99
Sierra 25W-40 Oil For Mercury Marine Engine, Sierra Part #18-9400-4

Sierra 25W-40 Oil For Mercury Marine Engine, Sierra Part #18-9400...

Key Features
  • Sierra Part #18-9400-4

  • 25W-40 oil

  • For Mercury Marine engine

$27.99
Johnson Pump Impeller Replacement Kit, 2-7/16" Diameter

Johnson Pump Impeller Replacement Kit, 2-7/16" Diameter

Key Features
  • Sherwood part #9959K

  • Impeller replacement parts

  • Includes impeller, gasket, and O-ring

  • 2-7/16" diameter

$24.99
Sierra 25W-40 Oil For Mercury Marine Engine, Sierra Part #18-9400-2

Sierra 25W-40 Oil For Mercury Marine Engine, Sierra Part #18-9400...

Key Features
  • Sierra Part #18-9400-2

  • 25W-40 oil

  • For Mercury Marine engine

$6.94
T-H Marine Transom Support Plate

T-H Marine Transom Support Plate

Key Features
  • 3/8" thick transom support plate

  • High-quality cast aluminum

  • Durable construction for long-lasting performance

  • Fits standard top bolt holes

$21.99
Water Pump Repair Kit for Mercury/Mariner

Water Pump Repair Kit for Mercury/Mariner

Key Features
  • Impeller, impeller gasket

  • Grommets, rubber seal

  • Cup insert, o-rings, wear plate

$21.99
Sierra Mercury Marine Impeller Repair Kit, Sierra Part #18-3207

Sierra Mercury Marine Impeller Repair Kit, Sierra Part #18-3207

Key Features
  • Sierra Part #18-3207

  • Use for making repairs to your impeller

  • For Mercury Marine engines

$19.99
Sierra Circuit Breaker, Sierra Part #CB40190

Sierra Circuit Breaker, Sierra Part #CB40190

Key Features
  • Sierra Part #CB40190

  • Circuit breaker

  • 50 amps

$19.99
Minimax Bullet Muffler, 4"

Minimax Bullet Muffler, 4"

Key Features
  • Fine fiberglass and highly fire-retardant resins

  • Neither affected by nor conductor of electrolysis

  • Easy to install

  • Sold individually

  • 4" I. D.

$209.99
$199.99
Minimax Bullet Muffler, 3"

Minimax Bullet Muffler, 3"

Key Features
  • Fiberglass and fire-retardant resin construction

  • Resistant to rust, moisture, and salt

  • Easy to install

  • 12" L

  • 3" I. D.

$169.99
$159.99
Sierra Thermostat Kit For Volvo Engine, Sierra Part #18-3677

Sierra Thermostat Kit For Volvo Engine, Sierra Part #18-3677

Key Features
  • Sierra Part #18-3677

  • Thermostat kit

  • For Volvo engine

$17.99
Sierra Thermostat For Crusader/Mercury Marine Engine, Sierra Part #18-3649

Sierra Thermostat For Crusader/Mercury Marine Engine, Sierra Part...

Key Features
  • Sierra Part #18-3649

  • Thermostat

  • For Crusader/Mercury Marine engine

$16.99
Sierra Drain Screw Gasket For Mercury Marine/OMC Engine, Sierra Part #18-2945

Sierra Drain Screw Gasket For Mercury Marine/OMC Engine, Sierra ...

Key Features
  • Sierra Part #18-2945

  • Drain screw gasket

  • Designed for Mercury Marine/OMC engine

$0.99
Sierra Temperature Sender, Sierra Part #TS25111

Sierra Temperature Sender, Sierra Part #TS25111

Key Features
  • Sierra Part #TS25111

  • Temperature sender

$15.99
Scepter Rectangular Cup Motor Flusher

Scepter Rectangular Cup Motor Flusher

Key Features
  • Fits all lower units

  • Ideal for low pressure conditions

  • Can be used with a regular garden hose

  • Allows out-of-water flushing

$9.99
$7.49
Michigan Wheel Labyrinth Seal Adapter Ring

Michigan Wheel Labyrinth Seal Adapter Ring

Key Features
  • Labyrinth seal adapter ring

  • For Vortex and Apollo propellers

  • Use with V4 applications

$5.99
Sierra Impeller For Honda Engine, Sierra Part #18-3100

Sierra Impeller For Honda Engine, Sierra Part #18-3100

Key Features
  • Sierra Part #18-3100

  • Impeller

  • For Honda engine

$12.99

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