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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

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

Results 1 - 25 of 38

Relay, 12 V, 40 amps, Single Pole, Wire Leads Terminal Type, Wiring Harness, Fuse, Kit

Part Number: AWW-500479

4.81 out of 5 stars ( 21 )

Estimated Ship Date: Today

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Relay, 12 V, 70 amps, Single Pole, Wire Leads Terminal Type, Wiring Harness, Kit

Part Number: AWW-500511

4.86 out of 5 stars ( 7 )

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Fan Relay Kit, 70 Amps, 12V, Temperature Sender, Single Relay, Fuse, Wire Harness, Kit

Part Number: AWW-510002

5.0 out of 5 stars ( 3 )

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Relay, 12 V, 60 amps, Double Pole, Wiring Harness, Kit

Part Number: AWW-510602

5.0 out of 5 stars ( 1 )

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Relay, 12 V, 35 amps, Single Pole Double Throw, Wiring Harness, Waterproof Design, Kit

Part Number: AWW-500093

Not Yet Reviewed

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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 )

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Relay, 12 V, 15 amps, Single Pole, Spade Terminal Type, Wiring Harness, Each

Part Number: RFW-RP1

Not Yet Reviewed

Estimated Ship Date: May 19, 2026 if ordered today

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Estimated Ship Date: May 19, 2026 if ordered today

Relay, 40 Amp, 12 V, 5 Male Terminals, Double Relay, Single Pole Double Throw, Universal, Kit

Part Number: RFW-RL402

5.0 out of 5 stars ( 1 )

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Relay, 40 Amp, 12 V, 5 Male Terminals, Quad Relays, Single Pole Double Throw, Universal, Kit

Part Number: RFW-RL404

5.0 out of 5 stars ( 2 )

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Relay, 40 Amp, 12 V, 5 Male Terminals, Single Pole Double Thow, Universal, Each

Part Number: RFW-RL40

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Relays, 30 Amp, 12 V, Single Pole, 5 Blade Terminals, Wiring Harness, General Use, Each

Part Number: AAF-ALL76188

3.4 out of 5 stars ( 5 )

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Relay, Water Pump, 30 Amp, Single Pole, Wiring Harness Crimp Connectors, Each

Part Number: MEZ-WIK346

4.8 out of 5 stars ( 15 )

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Relay and Harness, 40 Amp, Single Pole, Kit

Part Number: PCO-5591PT

4.75 out of 5 stars ( 76 )

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

Part Number: PRF-50102

4.86 out of 5 stars ( 58 )

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Relay, 70 Amps, Single Pole, Each

Part Number: DAK-RLY3

4.97 out of 5 stars ( 36 )

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Relay, 30 Amps, Single Pole, Wiring Pigtail, Each

Part Number: AAF-ALL76186

5.0 out of 5 stars ( 9 )

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Single 30 amp relay, Each

Part Number: DAK-RLY-1

4.67 out of 5 stars ( 12 )

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Dual Relay Pack, 30 Amps, Each

Part Number: DAK-RLY-2

4.6 out of 5 stars ( 5 )

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Accessory Relay, Dimmer Switch Control, 15 Amp, Single Pole, Each

Part Number: RFW-RP3

4.0 out of 5 stars ( 1 )

Estimated Ship Date: May 19, 2026 if ordered today

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Estimated Ship Date: May 19, 2026 if ordered today

Direct Fit Auto Fuse Series-Relay and Connector Kit , Needed with 1967-1978 Chevy Truck Direct Fit Auto Fuse Dash harness Purchase , Chevrolet

Part Number: SUM-RP20466

Not Yet Reviewed

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Waterproof Relay, 30 AMP Continuous, 40 AMP Momentary, 12V, Each

Part Number: MRG-40100G

4.82 out of 5 stars ( 11 )

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Relays, Built In 40 Amp Fuse, 12V, Each

Part Number: FCH-3020100310

Not Yet Reviewed

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Fan Relay; Universal 70 Amp Fan Relay KIt

Part Number: PRF-30100

4.0 out of 5 stars ( 4 )

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Relay, Ignition Power, Auto, 30 Amps, 12/16 V, 3 Amp 400 V Diode, with Harness, Male/Female Blade Connectors/Terminals, Screws, and Socket, Kit

Part Number: PNX-2001

4.68 out of 5 stars ( 28 )

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