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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 46

Relay Mini 20/40 Amp SPDT w/ Bracket & Resistor

Part Number: HLA-007794301

4.85 out of 5 stars ( 13 )

Estimated Ship Date: Today

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Relays, 20 amps, 24 V, Single Pole, 5 Blade Terminals, Weatherproof Relay with Bracket, General Use, Each

Part Number: HLA-933332201

5.0 out of 5 stars ( 1 )

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Relay, Weatherproof Relay with Bracket, 12 V, 40 amps, Single Pole, Spade Terminal Type, Each

Part Number: HLA-007794311

5.0 out of 5 stars ( 5 )

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Relay, General Use, 12 V, 30/20 amp, Single Pole 5 Terminal, Blade Style Pin, Mounting Bracket, Each

Part Number: BCH-0986AH0150

Not Yet Reviewed

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Relays, 12 V, 40 amps, Four Blade Terminals, Air Compressor Relay with Bracket, Each

Part Number: ARB-180905SP

5.0 out of 5 stars ( 1 )

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75 amps Dedenbear High-Power Relay BAR

Mail - In Rebate

Rebate amount based on part(s) total.

Rebate Expires: 4/30/2026

Get up to $150 back after rebate when you buy products from AutoMeter Brands! Go to: http://summitracing.com/go/atm

Get up to $150 back after rebate when you buy AutoMeter Products! Also includes Auto Gage, Dedenbear, Marine, Spek-Pro and Stack Brands. Spend $100-$199 and get $10 back. Spend $200-$449 and get $25 back. Spend $450-$699 and get $50 back. Spend $700-$999 and get $75 back. Spend $1,000-$1,499 and get $100 back. Spend $1,500 or more and get $150 back. Go to http://summitracing.com/go/atm for complete offer information. Valid on purchases made between 3/15/26 and 4/30/26. Rebate submission must be postmarked by 5/31/26. Limit one rebate per household. Allow up to 12 weeks for processing. Purchase amount is the subtotal before taxes and shipping.

Relay, 75 Amp, 4-Terminal, Bosch, Built-in Mounting Brackets, Each

Part Number: DED-BAR

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Today

  • Mail - In Rebate

    Rebate amount based on part(s) total.

    Rebate Expires: 4/30/2026

    Get up to $150 back after rebate when you buy products from AutoMeter Brands! Go to: http://summitracing.com/go/atm

    Get up to $150 back after rebate when you buy AutoMeter Products! Also includes Auto Gage, Dedenbear, Marine, Spek-Pro and Stack Brands. Spend $100-$199 and get $10 back. Spend $200-$449 and get $25 back. Spend $450-$699 and get $50 back. Spend $700-$999 and get $75 back. Spend $1,000-$1,499 and get $100 back. Spend $1,500 or more and get $150 back. Go to http://summitracing.com/go/atm for complete offer information. Valid on purchases made between 3/15/26 and 4/30/26. Rebate submission must be postmarked by 5/31/26. Limit one rebate per household. Allow up to 12 weeks for processing. Purchase amount is the subtotal before taxes and shipping.

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1964-74 Ford / Mercury; Horn Relay & Bracket Assembly; Mustang / Falcon / Comet / F-100

Part Number: OER-13853

Not Yet Reviewed

Estimated Ship Date: Aug 11, 2026 if ordered today

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Estimated Ship Date: Aug 11, 2026 if ordered today

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 and Harness, 40 Amp, Single Pole, Kit

Part Number: PCO-5591PT

4.75 out of 5 stars ( 76 )

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Relay, Alternator Shutdown, 12 V, 250 amps, Single Pole, Male Thread Terminal, Each

Part Number: MOR-74107

4.0 out of 5 stars ( 2 )

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Relay, 12 V, 30/40 amps, Single Pole, Spade Terminal Type, Double Throw, Each

Part Number: PCO-5590PT

5.0 out of 5 stars ( 1 )

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Relay, 12 V, 30/40 amps, Single Pole, Spade Terminal Type, Each

Part Number: PCO-5592PT

5.0 out of 5 stars ( 1 )

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Relay, General Use, 12 V, 30/20 amp, Single Pole 5 Terminal, Blade Style Pin, Each

Part Number: BCH-0986AH0151

5.0 out of 5 stars ( 3 )

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

Part Number: SMP-RY116

5.0 out of 5 stars ( 4 )

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

Part Number: SMP-RY115

4.67 out of 5 stars ( 3 )

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Relay, HVAC Blower Motor Cutout Usage, Spade Terminal Type, Buick, Cadillac, Chevy, GMC, Olds, Pontiac, Each

Part Number: FSS-35760

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Relays, 30 amps, 12 V, Single Pole, 4 Blade Terminals, General Use, Each

Part Number: HLA-965400001

5.0 out of 5 stars ( 2 )

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, 12V, Chrysler, Dodge, Plymouth, Horn, Each

Part Number: SMP-HR135

5.0 out of 5 stars ( 2 )

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Relay, OEM Replacement, Horn/Trunk Release, Each

Part Number: SMP-HR151

Not Yet Reviewed

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Relay, 12 V, 20 amps, Spade Terminal, Each

Part Number: SMP-RY612

Not Yet Reviewed

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Relay, HVAC, 20 amp, 12 V, 5 Terminal, Male Blade, Each

Part Number: SMP-RY612T

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Relay, HVAC Blower Motor Usage, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: FSS-35777

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Relay, 40 Amp, 12 V, Buick, Cadillac, Chevy, Chrysler, Dodge, Eagle, Geo, GMC, Hummer, Jeep, for Nissan, Oldsmobile, Pontiac, Porsche, Saab, Each

Part Number: SMP-RY242

1.0 out of 5 stars ( 1 )

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Multi Purpose Relay

Part Number: HLA-933332661

Not Yet Reviewed

Estimated Ship Date: Jun 9, 2026 if ordered today

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Estimated Ship Date: Jun 9, 2026 if ordered today