Automotive Relays

Generally speaking, a relay is an electronically operated switch that allows you to control a circuit with a low-power signal. Almost every system on your vehicle incorporates...

Generally speaking, a relay is an electronically operated switch that allows you to control a circuit with a low-power signal. Almost every system on your vehicle incorporates a relay in its controls, including the starter, electric cooling fans, fuel pump, headlights, and air conditioner, plus accessories like nitrous, off-road lights, and winches.

Whether you’re assembling an all-new wiring harness, or making repairs to existing circuits, the extensive selection, powerful search tools, and tech expertise at Summit Racing Equipment will help you find the right size and amperage rating of relay for the job.

Top Brands

Don’t take chances with a knock-off relay! Summit carries general purpose and application-specific relays from well-regarded brands like Painless Performance, MSD, Auto Rod Controls, Bosch, ACDelco, Standard Motor Products, Hella, and more.

Individual Parts

Part Groups

Results 1 - 25 of 2000 +

35 amps MSD High-Current Solid State Relay Block 75643-HC

Relays, High-Current, Solid State, 4 Channel, 35 amps, Black Each

Part Number: MSD-75643-HC

4.43 out of 5 stars ( 7 )

Estimated Ship Date: Today

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30 amps Summit Racing™ Fuel Pump Relay SUM-890023

Relay, Fuel Pump, 30 Amp, Single Pole, Each

Part Number: SUM-890023

4.23 out of 5 stars ( 146 )

Estimated Ship Date: Today

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40 amps NOS Solid State Relay 15620NOS

Relays, Solid State, 40 amps, 5-20 V, Single Pole, Female Connector Terminal Type, 24 in. Pigtail, Nitrous Usage, Each

Part Number: NOS-15620NOS

5.0 out of 5 stars ( 12 )

Estimated Ship Date: Today

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35 amps MSD High-Current Solid State Relay Block 7564-HC

Relays, High-Current, Solid State, 4 Channel, 35 amps, Red, Each

Part Number: MSD-7564-HC

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Today

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40 amps Spal Electric Fan Relay Wiring Kit FRH

Fan Harness with Relay, 40 amp, 12 V, Single Pole, Each

Part Number: SPU-IX-FRH

4.69 out of 5 stars ( 36 )

Estimated Ship Date: Today

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40 amps MSD Relay Module 7566-4

Relay Module, Four Channel, 40 Amp, 7-20V, Each

Part Number: MSD-7566-4

4.2 out of 5 stars ( 5 )

Estimated Ship Date: Today

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40 amps Pico Relay and Connector Kit 5593PT

Relay and Connector Kit, 12 V, 40 amps, Single Pole, Spade Terminal Type, Wiring Harness, Kit

Part Number: PCO-5593PT

4.55 out of 5 stars ( 29 )

Estimated Ship Date: Today

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25 amps Painless Performance No-Load LED Turn Signal Flasher 80230

Relay, Flasher Unit, 12 V, LED Flasher, No Load, 25 Amp, Each

Part Number: PRF-80230

4.72 out of 5 stars ( 36 )

Estimated Ship Date: Today

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25 amps Derale Electric Fan Relay 16765

Fan Relay, 40/60 Amp, 25 Amp Continuous, Each

Part Number: DER-16765

3.92 out of 5 stars ( 38 )

Estimated Ship Date: Today

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40 amps MSD Relay Module 7566-2

Relay Module, Two Channel, 40 Amp, 7-20V, Each

Part Number: MSD-7566-2

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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40 amps Pico Relay and Connector Kit 5591PT

Relay and Harness, 40 Amp, Single Pole, Kit

Part Number: PCO-5591PT

4.74 out of 5 stars ( 73 )

Estimated Ship Date: Today

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20 amps United Pacific LED Flasher 90652

Turn Signal Flasher, LED, 2-Terminal, 12V, 20 Amp Rating, Each

Part Number: UPD-90652

4.58 out of 5 stars ( 69 )

Estimated Ship Date: Today

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30 amps Painless Performance Universal Fuel Pump Relay Kit 50102

30 amps Painless Performance Universal Fuel Pump Relay Kit 50102

Relay, Fuel Pump, 30 Amp, Single Pole, Kit

Part Number: PRF-50102

4.85 out of 5 stars ( 52 )

Estimated Ship Date: Today

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30 amps Holley Fuel Pump Relay and Harness Kit 12-753

Relays, Fuel Pump, 30 Amp, 12V, Single Pole, Blade Type, Wire Harness Included, Each

Part Number: HLY-12-753

4.38 out of 5 stars ( 8 )

Estimated Ship Date: Today

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75 amps Bosch Relay 332002168

Relay, 75 Amp, 12 Volts, Single Pole, Blade/Screw, 4 Terminal, Ignition, Each

Part Number: BCH-0332002168

5.0 out of 5 stars ( 13 )

Estimated Ship Date: May 30, 2025 if ordered today

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Estimated Ship Date: May 30, 2025 if ordered today

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70 amps American Autowire Universal Relay Kit 500511

4.75 out of 5 stars ( 7 )

Estimated Ship Date: Today

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30 amps Painless Performance Weatherproof Fuel Pump Relay Kit 30131

Relay, Fuel Pump, Weatherproof, 30 Amp, Single Pole, Each

Part Number: PRF-30131

4.92 out of 5 stars ( 12 )

Estimated Ship Date: Today

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20 amps United Pacific LED Flasher 90650

Turn Signal Flasher, LED, 2-Terminal, 12V, 20 Amp Rating, Each

Part Number: UPD-90650

4.6 out of 5 stars ( 52 )

Estimated Ship Date: Today

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40 amps Summit Racing Equipment® Electric Fan Relay SUM-890008

Relay, Fan, 40 Amp, Single Pole, 48 in. Wire, Each

Part Number: SUM-890008

4.3 out of 5 stars ( 23 )

Estimated Ship Date: Today

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40 amps Painless Performance FAN-THOM Electric Fan Relay Kit 30101

Relay, Fan, 40 Amp, Single Pole, Each

Part Number: PRF-30101

4.7 out of 5 stars ( 47 )

Estimated Ship Date: Today

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70 amps Dakota Digital Relay with Wiring Sockets RLY-3

Relay, 70 Amps, Single Pole, Each

Part Number: DAK-RLY3

4.97 out of 5 stars ( 33 )

Estimated Ship Date: Today

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20 amps MSD Solid State Relay 75643

Relay Block, Solid State, Stand Alone, Black, Each

Part Number: MSD-75643

3.36 out of 5 stars ( 11 )

Estimated Ship Date: Today

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30 amps MagnaFuel Fuel Pump Relay Harness MP-1050

Relay, Fuel Pump, 30 Amp, Single Pole, Each

Part Number: MRF-MP-1050

4.91 out of 5 stars ( 11 )

Estimated Ship Date: Today

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70 amps Ron Francis Wiring 70 Amp Single Electric Fan Relay Systems AR70

Relay System, Electric Fan, 70 Amps, Ignition Switch Activated, Kit

Part Number: RFW-AR70

4.85 out of 5 stars ( 20 )

Estimated Ship Date: Today

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20 amps Hella Relay 931774031

Relay, Multi Purpose, Single Pole, 20 Amp, 12 V, Sealed Cover, Form A, Solid State Switch, Mini Relay, ISO, Each

Part Number: HLA-931774031

4.67 out of 5 stars ( 6 )

Estimated Ship Date: Today

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35 amps Painless Performance Relay and Relay Kit 80129

Relay, Universal, 35 Amp, Single Pole, Waterproof, Sealed Base, Each

Part Number: PRF-80129

4.2 out of 5 stars ( 5 )

Estimated Ship Date: Today

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