Summit Racing SpeedCard - learn how to get 15% back up to $150

Summit Racing SpeedCard - learn how to get 15% back up to $150

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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 151

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

Part Number: PRF-50102

4.85 out of 5 stars ( 55 )

Estimated Ship Date: Today

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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 )

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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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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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HVAC System Relay

Part Number: UAC-RE8000C

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

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Estimated Ship Date: Jan 26, 2026 if ordered today

HVAC System Relay

Part Number: UAC-RE4476C

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

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Estimated Ship Date: Jan 26, 2026 if ordered today

HVAC System Relay

Part Number: UAC-RE4800C

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

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Estimated Ship Date: Jan 26, 2026 if ordered today

HVAC System Relay

Part Number: UAC-RE0959C

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

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Estimated Ship Date: Jan 26, 2026 if ordered today

HVAC System Relay

Part Number: UAC-RE1008C

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

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Estimated Ship Date: Jan 26, 2026 if ordered today

HVAC System Relay

Part Number: UAC-RE8397C

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

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Estimated Ship Date: Jan 26, 2026 if ordered today

HVAC System Relay

Part Number: UAC-RE8410C

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

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Estimated Ship Date: Jan 26, 2026 if ordered today

HVAC System Relay

Part Number: UAC-RE1011C

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

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Estimated Ship Date: Jan 26, 2026 if ordered today

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

Part Number: RFW-RL40

Not Yet Reviewed

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Relay, 70 Amp, Single Pole, Universal, Each

Part Number: RFW-RL70

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Mar 2, 2026 if ordered today

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Estimated Ship Date: Mar 2, 2026 if ordered today

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 )

Estimated Ship Date: Today

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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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Relays, Shifnoid, 60 amps, 12 V, Single Pole with Double Throw, 5 Blade Terminals, Shifter Solenoid Usage, Each

Part Number: CTN-SN3885

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, 20/30 Amp, Single Pole, Single Throw, Each

Part Number: CTN-SN3850

Not Yet Reviewed

Estimated Ship Date: Feb 3, 2026 if ordered today

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Estimated Ship Date: Feb 3, 2026 if ordered today

RELAY

Part Number: CTN-SN3875

Not Yet Reviewed

Estimated Ship Date: Feb 3, 2026 if ordered today

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Estimated Ship Date: Feb 3, 2026 if ordered today

Relay Control Module

Part Number: UAC-SW11392C

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

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Estimated Ship Date: Jan 26, 2026 if ordered today

UAC branded NEW Relay

Part Number: UAC-RE8423C

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

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Estimated Ship Date: Jan 26, 2026 if ordered today

Relay

Part Number: UAC-RE8419C

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

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Estimated Ship Date: Jan 26, 2026 if ordered today

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