Thermostats - OMC

30 Ft. Boat Wiring Harness
Your Price:
$229.99

30 Ft. Boat Wiring Harness

620-08841

30 Ft. Boat Wiring Harness, Wired for Voltmeter and Mercury Style Cannon Plug

Wiring your boat does not have to be a hassle due to tangled wires, bad connections, and guess work. Poor wiring can ruin a boat. These boat harnesses use 275 degree, thermal crossed linked wire that will not kink and is abrasive resistant. Don’t take chances with your boat; trust the leader in marine wiring, Hardin Marine.

Note: Uses 14 AWG wire


Big Block Chevy Mercruiser Style Engine Harness For MSD Ignition
Your Price:
$229.99

Big Block Chevy Mercruiser Style Engine Harness For MSD Ignition

620-08904

Big Block Chevy Mercruiser Style Engine Harness For MSD Ignition

These wiring harnesses were designed for use in custom engine installations that use an MSD Ignition Box. Don't suffer from a tangled spaghetti-wire nightmare. Both the custom and universal harnesses are engineered of the highest quality wire, connections, terminals, and components.

Note: Uses 14 AWG wire


Custom MerCruiser Style Engine Harness
Your Price:
$146.99

Custom MerCruiser Style Engine Harness

620-08900

Custom MerCruiser Style Engine Harness - This unit is a Mercury style engine plug with 6-ft of un-terminated wire extending from it for the do-it-yourself installer.

These wiring harnesses were designed for use in custom engine installations. If you've ever tried to use an original Mercury harness on a custom engine installation you know that all of the wires either aren't located where you need them, or they're the wrong length. And there's so many that end up not being used. We have stepped in to build both a custom harness and a do-it-yourself harness using a factory Mercury style engine plug. Don't suffer from a tangled spaghetti-wire nightmare. Both the custom and universal harnesses are engineered of the highest quality wire,connections, terminals, and components.

Note: Uses 14 AWG wire


MerCruiser Style Wiring Pigtail - Mercury Plug, Instrument Side 12"
Your Price:
$49.99

MerCruiser Style Wiring Pigtail - Mercury Plug, Instrument Side 12"

620-08813

MerCruiser Style Wiring Pigtail - Mercury Plug, Instrument Side 12"

This plug is for use when building a boat harness. They are designed to plug into a Mercury engine harness. You can then connect your wiring and run it to your necessary gauges, switches, etc.

Note: Uses 14 AWG wire


Start Solenoid Kit
Your Price:
$39.99

Start Solenoid Kit

620-08816

Start Solenoid Kit

Note: Uses 14 AWG wire


Terminal Block Style Complete Boat Wiring Harness
Your Price:
$249.99

Terminal Block Style Complete Boat Wiring Harness

620-08840

Terminal Block Style Complete Boat Wiring Harness - 20 Foot Wired For Voltmeter

Wiring your boat doesn't have to be a hassle due to tangled wires, bad connections, and guess work. Poor wiring can ruin a boat these boat harnesses use 275 degree, thermal crossed linked wire that won't kink and is abrasive resistant. Don't take chances with your boat; trust the leader in marine wiring, Hardin Marine.

Note: Uses 14 AWG wire


Terminal Block Style Marine Engine Wiring Harness - 460 Ford
Your Price:
$199.99

Terminal Block Style Marine Engine Wiring Harness - 460 Ford

620-08803

Terminal Block Style Marine Engine Wiring Harness - 460 Ford

Wiring your boat's engine can be simple and easy. Take the frustration out of bad connections. These weather proof correct fit engine harnesses make the perfect choice for a new boat or to update an old boat. Save time and money with the right harness.

Note: Uses 14 AWG wire


Terminal Block Style Marine Engine Wiring Harness - BBC / SBC
Your Price:
$199.99

Terminal Block Style Marine Engine Wiring Harness - BBC / SBC

620-08802

Terminal Block Style Marine Engine Wiring Harness - Big Block/Small Block Chevy

Wiring your boat's engine can be simple and easy. Take the frustration out of bad connections. These weather proof correct fit engine harnesses make the perfect choice for a new boat or to update an old boat. Save time and money with the right harness.

Note: Uses 14 AWG wire


Terminal Block Style Marine Engine Wiring Harness - Oldsmobile
Your Price:
$199.99

Terminal Block Style Marine Engine Wiring Harness - Oldsmobile

620-08801

Terminal Block Style Marine Engine Wiring Harness - Oldsmobile

Wiring your boat's engine can be simple and easy. Take the frustration out of bad connections. These weather proof correct fit engine harnesses make the perfect choice for a new boat or to update an old boat. Save time and money with the right harness.

Note: Uses 14 AWG wire


Thermostat Kit OMC up to 1988
Your Price:
$18.99

Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

Thermostat Kit OMC up to 1988

676-9-43156

Thermostat Kit
Replaces: OMC
For: Most OMC up to 1988

Proper cooling system operation is critical to achieve smooth engine idle and maximum fuel efficiency. Mallory Marine Thermostats are designed to provide superior reliability and performance in marine applications.

  • Superior corrosion resistance from our bi-metal marine grade stainless steel brass designs
  • Accurate temperature ranges for marine engines to assure proper cooling system performance
Models Years Temp. Deg. (F) OEM #
90 1970 160 383307
100 1972-73 160 383307
120 1969-80 160 383307
140 1973-80 160 383307
155 1969-72 160 383307
165 1972-76 160 383307
170 1974 160 383307
175 1975-77 160 383307
185 1978-80 160 383307
190 1974-77 160 383307
200 1979-81 160 383307
210 1969-72 160 383307
215 1971 160 383307
225 1971 160 383307
230 1979-81 160 383307
235 1971 160 383307
235 1975-77 160 383307
240 1978 160 383307
245 1972-75 160 383307
250 1970-73 160 383307
250 1979 160 383307
260 1979-81 160 383307
305 1977-82 160 383307
350 1977-82 160 383307
454 1977-82 160 383307
3.8L 1981-85 160 383307
4.3L 1985-86 160 383307
5.0L 1982-88 160 383307
5.7L 1982-88 160 383307
7.5L 1988 160 383307

Thermostat OMC 383307
Your Price:
$16.99

Normally Ships in 7-10 Days. Rush proccessing is available on Mallory items: See here.

Thermostat OMC 383307

676-9-43021

Thermostat
Replaces: OMC 383307
160 degree

Proper cooling system operation is critical to achieve smooth engine idle and maximum fuel efficiency. Mallory Marine Thermostats are designed to provide superior reliability and performance in marine applications.

  • Superior corrosion resistance from our bi-metal marine grade stainless steel brass designs
  • Accurate temperature ranges for marine engines to assure proper cooling system performance

Universal Engine Harness
Your Price:
$179.99

Universal Engine Harness

620-08815

Universal Engine Harness for use in multiple engine applications. The wires are 6' long and do not have any terminals on the engine ends.

Note: Uses 14 AWG wire


Universal Engine Harness w/ Solenoid Kit
Your Price:
$209.99

Universal Engine Harness w/ Solenoid Kit

620-08817

Universal Engine Harness w/ Solenoid Kit for use in multiple engine applications. The wires are 6' long and do not have any terminals on the engine ends.

Note: Uses 14 AWG wire


Universal Mercury Plug Harness 20 FT
Your Price:
$189.99

Universal Mercury Plug Harness 20 FT

620-08814

Universal Mercury Plug Harness 20 FT (Male Plug)

This plug is for use when building a boat harness. They are designed to plug into a Mercury engine harness. This is a perfect start for the handy do-it-yourselfer. This universal style harness will provide connections for power, ignition and sender wires for the engine. Additional wiring is required to complete a factory style harness.

Note: Uses 14 AWG wire