- The MSD 4 Channel Relay Module provides reliable high amperage switching for electric fuel pumps, cooling fans, and other power-hungry accessories
- Engineered for straightforward integration into most 12-volt automotive electrical systems
- Four independent 40A output channels to support demanding aftermarket components
- Supplied with 40 amp JCASE fuses and compatible with lower amp options when required
- Integrated LED indicators for a quick at-a-glance status of each active circuit
- Operates on a 7V to 20V range with configurable single wire activation using Ground negative or 12V positive input and a protective snap on labeled cover
- Backed by a 1-Year Limited Warranty
When you're fine-tuning your build, dependable electrical control is just as important as horsepower. From upgraded fuel systems to high-output cooling fans, having a clean and organized relay solution helps keep your setup reliable and your engine bay looking sharp. A properly managed power distribution system protects your components while delivering consistent performance every time you turn the key. For enthusiasts who want straightforward installation and confident high amperage control, the answer is the MSD 4 Channel Relay Module.
The MSD 4 Channel Relay Module is engineered to integrate easily into most automotive electrical systems that require a high-amperage relay, making it an excellent choice for electric fuel pumps and high-CFM cooling fans. It provides independent 40A outputs and comes equipped with a 40-amp fuse per channel, with the flexibility to swap in lower amp fuses if your application requires it, all protected by low-profile JCASE fuses. LED status indicators allow quick visual confirmation of active channels, and a 7V to 20V operating range supports a wide variety of vehicle setups.
The module also offers configurable single-wire activation using either a Ground negative input or a 12V positive input with the removal of the Tie Bar, and the labeled snap-on cover shields the main power stud and trigger connections from debris or accidental contact while allowing easy access when needed. Backed by a 1-Year Limited Warranty.