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After exploring thousands and millions of articles and reviews by our smart AI & ML engines; and deep processing, evaluation and rectification by our competent hi-technology gurus, the golden shortlist for the Best Automotive Performance Switches & Relays (2021) is ultimately drafted.

The ultimate guide on Best Automotive Performance Switches & Relays produced using Deep Learning and Artificial Intelligence technology

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In order to come up with the Best Automotive Performance Switches & Relays (2021), our intelligent platforms and experts have taken many criteria into account such as product usability, features that meet buyers needs and give customer satisfaction, defect-free, conformance of standards, value-for-money, service requirements, user-oriented design, quality conformance to needs and good practises, protection and safety, real user satisfaction and many others. It is worth to mention that each user has different needs so please consider the below list as a guide and not as a gospel. Nevertheless, in the below list you can definitely find the overall best ones regardless of your requirements.

Our intelligent platforms and competent high-tech gurus work hard to provide you with the best product choices. We strongly believe that our review rankings can help you simplify your purchase decision and choose among the very Best Automotive Performance Switches & Relays (2021).

Best Automotive Performance Switches & Relays

Best Choice No. 1
Painless Performance 30116 Dual Activation, Dual Electric Fan Relay Kit with Thermostatic Switch (On 195/Off 185)
Painless Performance 30116 Dual Activation, Dual Electric Fan Relay Kit with Thermostatic Switch (On 195/Off 185)
  • Dual activation cooling fan relay will turn your cooling fans on when the engine reaches the preset temperature of the thermostatic switch mounted in the engine head or when the A/C is turned on
  • Ideal for installing air conditioning in your project car
  • Features simple to use Posi-taps for the ignition and A/C compressor connections
  • Kit includes: Three 40-amp relays with mounting bases & wiring, fuse holder & 70-amp fuse, two LT1/LS1 fan connectors, thermostatic switch, adapter and insulated terminals
  • Thermostatic switch turns on at 195 degrees and off at 185 degrees; Thread size: 3/8″-18NPT; 1/2″ NPT to 3/8″ NPT adapter provided
$151.84
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Best Choice No. 2
Painless Performance 30103 Fan Relay with Thermostatic Switch, 185 On/175 Off
Painless Performance 30103 Fan Relay with Thermostatic Switch, 185 On/175 Off
  • Inexpensive protection for an electric fan and a vehicle’s wire harness
  • Provides constant voltage, protects from voltage and amperage spikes and prevents the fan from back feeding voltage
  • Threaded thermostatic switch (185°F On/175°F Off) screws into the engine block or intake manifold; Switch thread size 3/8″-18NPT (1/2″ to 3/8″ NPT adapter provided)
  • Protected by 40-amp relay and 30-amp circuit breaker
$50.48
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Best Choice No. 3
Painless Performance 30201 Hot Shot Plus w/Engine Bump Switch Relay Kit
Painless Performance 30201 Hot Shot Plus w/Engine Bump Switch Relay Kit
  • Allows you to turn over the engine from the engine compartment for adjusting valves or other maintenance
  • Package Dimensions: 5.08 H x 29.464 L x 18.541 W (centimetres)
  • Package Weight: 0.800 pounds
  • Country of Origin : United States
$55.39
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Best Choice No. 4
Painless Performance 30118 Dual Activation, Dual Electric Fan Relay Kit with Thermostatic Switch (On 205/Off 190) for LSX
Painless Performance 30118 Dual Activation, Dual Electric Fan Relay Kit with Thermostatic Switch (On 205/Off 190) for LSX
  • Dual activation cooling fan relay will turn your cooling fans on when the engine reaches the preset temperature of the thermostatic switch mounted in the engine head or when the A/C is turned on
  • Ideal for installing air conditioning in your project car
  • Features simple to use Posi-taps for the ignition and A/C compressor connections
  • Kit includes: Three 40-amp relays with mounting bases & wiring, fuse holder & 70-amp fuse, two LT1/LS1 fan connectors, thermostatic switch, adapter and insulated terminals
  • Thermostatic switch turns on at 205 degrees and off at 190 degrees; Thread size: M12 x 1. 5mm
$137.98
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Best Choice No. 5
Painless Performance 30117 Dual Activation, Dual Electric Fan Relay Kit with Thermostatic Switch (On 185/Off 175)
Painless Performance 30117 Dual Activation, Dual Electric Fan Relay Kit with Thermostatic Switch (On 185/Off 175)
  • Dual activation cooling fan relay will turn your cooling fans on when the engine reaches the preset temperature of the thermostatic switch mounted in the engine head or when the A/C is turned on
  • Ideal for installing air conditioning in your project car
  • Features simple to use Posi-taps for the ignition and A/C compressor connections
  • Kit includes: Three 40-amp relays with mounting bases & wiring, fuse holder & 70-amp fuse, two LT1/LS1 fan connectors, thermostatic switch, adapter and insulated terminals
$119.99
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Best Choice No. 6
Painless Performance 30129 Weatherproof Electric Fan Relay Kit with Thermostatic Switch (On 185, Off 175)
Painless Performance 30129 Weatherproof Electric Fan Relay Kit with Thermostatic Switch (On 185, Off 175)
  • Provides constant voltage, protects from voltage and amperage spikes and prevents the fan from back feeding voltage through the vehicle’s wire harness
  • Threaded thermostatic switch that screws into the engine block or intake manifold for a professional looking installation
  • Inexpensive protection for an electric fan and a vehicle’s wire harness
  • Kit includes weatherproof: SPST 35-amp relay, 30-amp circuit breaker and relay base with harness (6′ input/2′ output); thermostatic switch, adapter, heat-shrinkable crimp-on terminals and mounting hardware
  • Thermostatic switch turns on at 185 degrees and off at 175 degrees; Thread size: 3/8″-18NPT; 1/2″ NPT to 3/8″ NPT adapter provided
$55.99
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Best Choice No. 7
Painless Performance 30115 Dual Activation Electric Fan Relay Kit with Thermostatic Switch (On 185/Off 175)
Painless Performance 30115 Dual Activation Electric Fan Relay Kit with Thermostatic Switch (On 185/Off 175)
  • Dual activation cooling fan relay will turn your cooling fan on when the engine reaches the preset temperature of the thermostatic switch mounted in the engine head or when the A/C is turned on
  • Ideal for installing air conditioning in your project car
  • Features simple to use Posi-taps for the ignition and A/C compressor connections
  • Kit includes: 40-amp relay with mounting base & wiring (6′ input, 4′ output), 30-amp circuit breaker, thermostatic switch, adapter, mounting hardware and insulated terminals
  • Thermostatic switch turns on at 185 degrees and off at 175 degrees; Thread size: 3/8″-18NPT; 1/2″ NPT to 3/8″ NPT adapter provided
$56.99
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Best Choice No. 8
A-Team Performance Electric Cooling Radiator Fan Relay Kit With Thermostat Installation Hardware Wiring Set 180 to 200 Degrees Temp Sensor Temperature Switch 40 Amp Relay
A-Team Performance Electric Cooling Radiator Fan Relay Kit With Thermostat Installation Hardware Wiring Set 180 to 200 Degrees Temp Sensor Temperature Switch 40 Amp Relay
  • Temperature Electrical Switch — Turns on electric fan at 200 Degrees and shut it off at 180 Degrees
  • Specifications — 12V 40 Amp 4 Pin Relay & Pigtail, 30 Amp Circuit Breaker, and 3/8″ National Pipe Thread (NPT) Switch
  • Relay Switch Kit — New 180 to 200 Degree electric fan thermostat relay switch kit for your cooling system
  • Compatible With — 265 283 305 307 327 350 383 400 396 402 427 454 472 502 260 289 302 351W 347 352 360 390 406 427 428 429 460 351C 351M 400M 273 318 340 360 361 383 400 413 426W 440 455 330 326 Engines
  • Kit Inclusions — Sending Unit, Wires, Relay Switch, Circuit Breaker, Terminals
$17.99
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SaleBest Choice No. 9
ACDelco Professional D1741C Multi-Purpose Relay
ACDelco Professional D1741C Multi-Purpose Relay
  • Professional, premium aftermarket replacement
  • Provides the performance and dependability you expect from ACDelco
  • Manufactured to meet expectations for fit, form, and function
$14.10 −$3.60 $10.50
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Best Choice No. 10
5 Pack 40/30 AMP 12 V DC Waterproof Relay and Harness - Heavy Duty 12 AWG Tinned Copper Wires, 5-PIN SPDT Bosch Style Automotive Relay
5 Pack 40/30 AMP 12 V DC Waterproof Relay and Harness – Heavy Duty 12 AWG Tinned Copper Wires, 5-PIN SPDT Bosch Style Automotive Relay
  • 12 AWG tinned copper wires for Pin 30, Pin 87, Pin 87a. Length: 5.1in
  • 16 AWG tinned copper wires for Pin 85, Pin 86. Length: 5.1in
  • 12v dc waterproof 5 wire relay (max 14v). 40 amp / 30 amp High switching capability
  • Excellent waterproof and dustproof ability, high quality in any weather conditions
  • Nominal Coil Voltage: 12 V DC; Coil Power: 1.8 W; Coil Resistance: 80 Ω; Must Operate Voltage: 6~8 V DC; Must Release Voltage: 0.6~3.6 V DC; Maximum Applied Voltage: 15.6 V DC
$25.00
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