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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 47

Relay, Radiator Fan Control Relay, Direct Replacement, Ram, Each

Part Number: RNB-921-301

Not Yet Reviewed

Estimated Ship Date: Apr 14, 2026 if ordered today

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Estimated Ship Date: Apr 14, 2026 if ordered today

Fan Relay Kit; PCM Controlled

Part Number: PRF-30109

4.2 out of 5 stars ( 10 )

Estimated Ship Date: Today

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Radiator Fan Control Module

Part Number: RNB-902-502

Not Yet Reviewed

Estimated Ship Date: Apr 14, 2026 if ordered today

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Estimated Ship Date: Apr 14, 2026 if ordered today

Radiator Fan Control Module

Part Number: RNB-904-601

Not Yet Reviewed

Estimated Ship Date: Apr 14, 2026 if ordered today

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Estimated Ship Date: Apr 14, 2026 if ordered today

Relay, Electrical, 12 V, Engine Cooling Fan Controller Relay Position, Ford, Mercury, Each

Part Number: FSS-37506

Not Yet Reviewed

Estimated Ship Date: Today

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

Part Number: DER-16765

3.88 out of 5 stars ( 40 )

Estimated Ship Date: Today

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Relay, 40/60 Amp, 25 Amp Continuous, 30 Amp Fuse, Each

Part Number: DER-16763

4.16 out of 5 stars ( 25 )

Estimated Ship Date: Today

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Relay, Fan, 40 Amp, Single Pole, Each

Part Number: BCI-75095

4.83 out of 5 stars ( 6 )

Estimated Ship Date: Today

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

Part Number: AAF-ALL76186

5.0 out of 5 stars ( 9 )

Estimated Ship Date: Today

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Relay, Solid State, 100 Amps, Universal, Each

Part Number: HTH-HT-030202

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Today

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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 )

Estimated Ship Date: Today

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HORN RELAY

Part Number: GMK-4012-263-72

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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POWER WINDOW RELAY

Part Number: GMK-4020-374-674

Not Yet Reviewed

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A/C Control Relay

Part Number: SMP-RY805T

Not Yet Reviewed

Estimated Ship Date: Apr 13, 2026 if ordered today

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Estimated Ship Date: Apr 13, 2026 if ordered today

Relay, 12 V, Blade Terminal Type, Each

Part Number: CWA-4692079AA

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Relay, 20 amps, 12 V, Blade Terminal, 4 Male, Each

Part Number: DNP-567-0001

Not Yet Reviewed

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Relay, 30 Amp, 12V, 5 Male Terminals, Each

Part Number: SMP-RY116

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Relay, 30 Amp, 12 V, American Motors, Audi, BMW, Buick, Cadillac, Chevy, Chrysler, Daewoo, Dodge, Eagle, Fiat, Ford Geo, GMC, for use on Honda®, Each

Part Number: SMP-RY116T

Not Yet Reviewed

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Relay, 30 Amp, 12 V, Chrysler, Dodge, Plymouth, Each

Part Number: SMP-RY119

Not Yet Reviewed

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Relay, Multi Purpose, High Power, General, 8386, Each

Part Number: ADO-13500114

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Relays, Replacement, 35 amps, 12 V, 5 Blade Terminals, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, Saab, Saturn, Suzuki, Each

Part Number: ADO-D1780C

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Relay, 30 Amp, 12V, 5 Male Terminals, Each

Part Number: SMP-RY115

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Multi Purpose Relay

Part Number: HLA-933332541

Not Yet Reviewed

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Relay, Replacement, 12 V, 35 amps, 5 Male Spade Terminals, Buick, Cadillac, Chevy, GMC, Hummer, Pontiac, Each

Part Number: ADO-15-81106

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Relay, Replacement, 12 V, 30 amps, 4 Male Terminals, Buick, Cadillac, Chevy, Daewoo, Dodge, Pontiac, Saturn

Part Number: ADO-D1741C

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

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