Relays - 40 amps Amperage Rating - In Stock Filter Options - Vendor In Stock Filter Options - Free Shipping on Orders Over $109 at Summit Racing

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 )

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40 amps MSD Relay Module 7566-1

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

Part Number: MSD-7566-1

5.0 out of 5 stars ( 1 )

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40 amps Be Cool Fan Relay Harness Kit 75017

Relay, Fan, 40 Amp, Single Pole, Each

Part Number: BCI-75017

4.8 out of 5 stars ( 10 )

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40 amps Be Cool Air Conditioning Relay 75095

40 amps Be Cool Air Conditioning Relay 75095

Relay, Fan, 40 Amp, Single Pole, Each

Part Number: BCI-75095

4.83 out of 5 stars ( 6 )

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40 amps American Autowire Relay 500403

Relays, Headlight Enhancement Relay with G for Aaw, 12 V, 40 amps, Kit

Part Number: AWW-500403

4.89 out of 5 stars ( 18 )

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40 amps Ron Francis Wiring Universal Relay Kit RL402

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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40 amps Ron Francis Wiring Universal Relay Kit RL404

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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40 amps Ron Francis Wiring Headlight Relief Relay HR58

Headlamp Relief Relay, 40 Amps, Dual Relays, 12 V, Kit

Part Number: RFW-HR58

4.57 out of 5 stars ( 7 )

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40 amps Ron Francis Wiring Headlight Relief Relay HR56

Headlamp Relief Relay, 40 Amps, Single Relay, 12 V, Kit

Part Number: RFW-HR56

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Feb 24, 2026 if ordered today

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Estimated Ship Date: Feb 24, 2026 if ordered today

40 amps Ron Francis Wiring Chevy Hot Start Relay Kit HR67

Hot Start Relay, 40 Amps, 12 V, Chevy, Each

Part Number: RFW-HR67

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Feb 24, 2026 if ordered today

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Estimated Ship Date: Feb 24, 2026 if ordered today

40 amps Ron Francis Wiring Anti-Theft Relay Kit AT70

Relay, Anti-Theft, 12 V, 40 amps, Single Pole, Blade Terminal, Wiring Harness, Kit

Part Number: RFW-AT70

Not Yet Reviewed

Estimated Ship Date: Feb 24, 2026 if ordered today

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Estimated Ship Date: Feb 24, 2026 if ordered today

40 amps Ron Francis Wiring Brake Switch and Cruise Control Relay BR15

Relay, 12 V, 40 amps, Spade Terminal Type, Wiring Harness, Kit

Part Number: RFW-BR15

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Feb 24, 2026 if ordered today

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Estimated Ship Date: Feb 24, 2026 if ordered today

40 amps Ron Francis Wiring Neutral Safety Relay RP12

Relay, Neutral Safety, 12 V, 40 amps, Five Male Terminals, Each

Part Number: RFW-RP12

Not Yet Reviewed

Estimated Ship Date: Feb 24, 2026 if ordered today

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Estimated Ship Date: Feb 24, 2026 if ordered today

40 amps Ron Francis Wiring Brake Switch Relief Relay BR66

Relay, Brake Switch Relief, 12 V, 40 amps, Five Spade Terminals, Use with Halogen Brake Bulbs, Kit

Part Number: RFW-BR66

Not Yet Reviewed

Estimated Ship Date: Feb 24, 2026 if ordered today

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Estimated Ship Date: Feb 24, 2026 if ordered today