Engine Parts & Service - Accessories
![ARCO Marine 500A/50mV Shunt [ST500]](http://allwatersmarine.com/cdn/shop/files/108056XL_{width}x.jpg?v=1741290326)
![ARCO Marine 500A/50mV Shunt [ST500]](http://allwatersmarine.com/cdn/shop/files/108056XL_grande.jpg?v=1741290326)
![ARCO Marine 1000A/50mV Shunt [ST1000]](http://allwatersmarine.com/cdn/shop/files/108057XL_{width}x.jpg?v=1741290331)
![ARCO Marine 1000A/50mV Shunt [ST1000]](http://allwatersmarine.com/cdn/shop/files/108057XL_grande.jpg?v=1741290331)
![Regitar USA Relay w/Tab f/Most Engines: 30AMP, 5 Terminal, Single Pole/Double Throw [RMZ013]](http://allwatersmarine.com/cdn/shop/files/107657XL_{width}x.jpg?v=1742334456)
![Regitar USA Relay w/Tab f/Most Engines: 30AMP, 5 Terminal, Single Pole/Double Throw [RMZ013]](http://allwatersmarine.com/cdn/shop/files/107657XL_grande.jpg?v=1742334456)
Regular price
$16.99
![Regitar USA Relay w/Shroud f/Mercruiser 575 Sci, 350MAG, 4.3L, 6.2L, 5.0L, 383MAG [RMZ014]](http://allwatersmarine.com/cdn/shop/files/107658XL_{width}x.jpg?v=1742334467)
![Regitar USA Relay w/Shroud f/Mercruiser 575 Sci, 350MAG, 4.3L, 6.2L, 5.0L, 383MAG [RMZ014]](http://allwatersmarine.com/cdn/shop/files/107658XL_grande.jpg?v=1742334467)
Regular price
$27.99
![Regitar USA Relay f/Most Engines: 30AMP, 5 Terminal, Single Pole/Double Throw [RMZ012]](http://allwatersmarine.com/cdn/shop/files/107656XL_{width}x.jpg?v=1742334449)
![Regitar USA Relay f/Most Engines: 30AMP, 5 Terminal, Single Pole/Double Throw [RMZ012]](http://allwatersmarine.com/cdn/shop/files/107656XL_grande.jpg?v=1742334449)
Regular price
$18.99
![Regitar USA Voltage Regulator f/Mercury [RMV001]](http://allwatersmarine.com/cdn/shop/files/107651XL_{width}x.jpg?v=1742334393)
![Regitar USA Voltage Regulator f/Mercury [RMV001]](http://allwatersmarine.com/cdn/shop/files/107651XL_grande.jpg?v=1742334393)
![Regitar USA Idle Air Control f/Volvo Penta 4.3L 6-cyl | 7.4-8.1L V8 GM Volvo OS Gasoline Engines [RMS002]](http://allwatersmarine.com/cdn/shop/files/107648XL_{width}x.jpg?v=1742334362)
![Regitar USA Idle Air Control f/Volvo Penta 4.3L 6-cyl | 7.4-8.1L V8 GM Volvo OS Gasoline Engines [RMS002]](http://allwatersmarine.com/cdn/shop/files/107648XL_grande.jpg?v=1742334362)
Regular price
$164.99
![Regitar USA Idle Air Control f/Mercruiser MCM 3.0L MPI, V-6 V-8 (305, 350 496 CID) MPI Engines w/ECM 555 [RMS004]](http://allwatersmarine.com/cdn/shop/files/107650XL_{width}x.jpg?v=1742334383)
![Regitar USA Idle Air Control f/Mercruiser MCM 3.0L MPI, V-6 V-8 (305, 350 496 CID) MPI Engines w/ECM 555 [RMS004]](http://allwatersmarine.com/cdn/shop/files/107650XL_grande.jpg?v=1742334383)
Regular price
$145.00
![Regitar USA Idle Air Control f/Volvo Penta OMC Engines: OMC 4.3L V6, 160-205 Hp | GM 5.0-5.7L V8, 190-280 Hp [RMS001]](http://allwatersmarine.com/cdn/shop/files/107647XL_{width}x.jpg?v=1742334351)
![Regitar USA Idle Air Control f/Volvo Penta OMC Engines: OMC 4.3L V6, 160-205 Hp | GM 5.0-5.7L V8, 190-280 Hp [RMS001]](http://allwatersmarine.com/cdn/shop/files/107647XL_grande.jpg?v=1742334351)
Regular price
$199.99
![Regitar USA Rotor f/Mercruiser Inboard Engines: GM Style "Module in Cap" Distributors 4.3L V-6 Engines w/Delco HEI Ignition [RMN004]](http://allwatersmarine.com/cdn/shop/files/107564XL_{width}x.jpg?v=1742334068)
![Regitar USA Rotor f/Mercruiser Inboard Engines: GM Style "Module in Cap" Distributors 4.3L V-6 Engines w/Delco HEI Ignition [RMN004]](http://allwatersmarine.com/cdn/shop/files/107564XL_grande.jpg?v=1742334068)
Regular price
$8.99
![Regitar USA Rotor f/Mercruiser OMC 4 6 Cyl. Engines w/Delco Conventional Ignition [RMN003]](http://allwatersmarine.com/cdn/shop/files/107563XL_{width}x.jpg?v=1742499545)
![Regitar USA Rotor f/Mercruiser OMC 4 6 Cyl. Engines w/Delco Conventional Ignition [RMN003]](http://allwatersmarine.com/cdn/shop/files/107563XL_grande.jpg?v=1742499545)
Regular price
$5.10
![Regitar USA Rotor f/Prestolite Ignitions: Ford GM 6 8 Cylinder Engines w/Prestolite Conventional Ignition [RMN001]](http://allwatersmarine.com/cdn/shop/files/107561XL_{width}x.jpg?v=1742334051)
![Regitar USA Rotor f/Prestolite Ignitions: Ford GM 6 8 Cylinder Engines w/Prestolite Conventional Ignition [RMN001]](http://allwatersmarine.com/cdn/shop/files/107561XL_grande.jpg?v=1742334051)