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MSD Performance 75643 - Stand Alone Solid State Relay Kit-4. 20 Amps Each
Clean up your wiring with an MSD Solid State Relay Block. This module takes the place of 4 standard relays and eliminates unsightly wiring. 4 independent channels can be activated using either power or ground. Each channel is capable of handling 50 Amps for up to 8 seconds or 20 Amps of continuous current. With 4 channels providing up to 200 Amps of momentary or 80 Amps constant combined power, you can easily control electric fans, water pumps, nitrous solenoids, auxiliary lighting and any other electrical accessories that would normally require a relay. LED status indicators ensure proper wiring and operation of each channel. Should a problem arise, the relay block has built-in automatic over-temp, short circuit and overload protection. The 7564 can easily be mounted using the supplied hardware and mounting tabs that can be rotated 90° to accommodate various mounting locations. It's compact and clean design will make your wiring project a breeze.

  • 4 Channels, Up to 20 Amps continuous each and 50 Amps for 8 seconds
  • Clean, easy install with minimum wiring
  • Over temp, short circuit and overload protection
  • Diagnostic LED’s
  • Multiple mounting options
  • Activate with power or ground
  • Channels can be run in parallel for devices requiring more than the single-channel rating
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MSD Performance 75643 - Stand Alone Solid State Relay Kit-4. 20 Amps Each
Clean up your wiring with an MSD Solid State Relay Block. This module takes the place of 4 standard relays and eliminates unsightly wiring. 4 independent channels can be activated using either power or ground. Each channel is capable of handling 50 Amps for up to 8 seconds or 20 Amps of continuous current. With 4 channels providing up to 200 Amps of momentary or 80 Amps constant combined power, you can easily control electric fans, water pumps, nitrous solenoids, auxiliary lighting and any other electrical accessories that would normally require a relay. LED status indicators ensure proper wiring and operation of each channel. Should a problem arise, the relay block has built-in automatic over-temp, short circuit and overload protection. The 7564 can easily be mounted using the supplied hardware and mounting tabs that can be rotated 90° to accommodate various mounting locations. It's compact and clean design will make your wiring project a breeze.

  • 4 Channels, Up to 20 Amps continuous each and 50 Amps for 8 seconds
  • Clean, easy install with minimum wiring
  • Over temp, short circuit and overload protection
  • Diagnostic LED’s
  • Multiple mounting options
  • Activate with power or ground
  • Channels can be run in parallel for devices requiring more than the single-channel rating

Available downloads:
Download instructions

0 of 0 reviews

Average rating of 0 out of 5 stars

Leave a review!

Share your experiences with other customers.


There are no installation notes for this product.

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MSD Performance

Racers never stop experimenting as they search for every way to wring out more power or handling performance to to gain an edge over the competition. The team at MSD is no different as we strive to deliver the products you need to meet your performance goals. We continue to innovate and invent components and technology that deliver performance and reliability with products that are easy to use and install. Over the course of 40-plus years, MSD Performance has been driving the development of innovative components that helped shape the way our cars race and perform. From super speedways to road courses, land speed racing to top fuel dragsters, and of course your traditional hot rod, MSD has provided the components to fire nearly anything in motorsports. Early on, MSD focused squarely on ignition systems with revolutionary products like the multiple sparking CD ignition, timing and rev controls, billet aluminum distributors and the Pro-Mag, an incredible breakthrough in power and endurance. Today MSD is developing electronics for your entire powertrain. The Atomic EFI systems for the LS engine platform and throttle body are now complemented with a transmission controller. Our DynaForce Starters and Alternators ensure that your engine cranks over to fire up and the Alternators keep it charged. MSD is poised to deliver components that work and communicate together to provide performance and value.