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MSD High Current Relay Block 7564-HC

MSD High Current Relay Block 7564-HC
MSD High Current Relay Block 7564-HCMSD High Current Relay Block 7564-HCMSD High Current Relay Block 7564-HCMSD High Current Relay Block 7564-HCMSD High Current Relay Block 7564-HCMSD High Current Relay Block 7564-HCMSD High Current Relay Block 7564-HCMSD High Current Relay Block 7564-HCMSD High Current Relay Block 7564-HC
$319.99 ea
NEWARRIVING SOONEstimated Ship Date 10/23/2023 (If Ordered Today)30 available from HOLLEY PERFORMANCE PRODUCTS as of 09/29/2023
Model: 4018167
Supplier has not provided any fitment data for this product.
Clean up your wiring with an MSD Solid-State High Current Relay Block. This high current module takes the place of 4 standard relays and eliminates unsightly wiring. Four independent channels can be activated using either power or ground. Each channel is capable of handling up to 35 Amps of continuous current, providing up to 140 Amps of power. It also has the capability of Pulse Width Modulation (PWM). With a PWM input, you can control the output at a rate of 15 hertz and a duty cycle of 50-90%. Controls 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, as well as a channel reset. The solid-state high current relay 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.
  • Easy Installation
  • Over Temp/Short Circuit/Overload Protection
  • Diagnostic LEDs
  • Multiple Mounting Options
Holley Performance Emission Code 5: This part is legal for sale or use on Emissions Controlled Vehicles; Uncontrolled (Non-Emissions Controlled) Vehicles; and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations
Installation Notes:
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About MSD Ignition

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.

MSD was the first company to develop and offer the multiple sparking, capacitive discharge ignition for engines. The line of MSD 6-Series Ignitions are the most popular aftermarket ignitions in the world due to our race-proven performance on the track and our reliability on the street!

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.


Download Name File Size



Color Red
Emission Code 5
Part Type Multi Purpose Relay
WARNING CA Proposition 65 WARNING: Cancer and Reproductive Harm


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MSD High Current Relay Block 7564-HC:
Chevelle Depot 2023