MSD 85231 Cam Sync Plug - High Performance Engine Synchronization Sensor for GM LS Engines - Perfect for Racing, Street Performance & Engine Tuning

MSD's cam sync plugs are the perfect solution when running an aftermarket sequential EFI system with coil-per-cylinder ignition. The cam sync plug installs in place of a traditional distributor, providing a hall-effect cam sync signal needed for the EFI system to reference the # 1 cylinder. MSD's cam syncs are plug and play with Holley EFI systems and can easily interface with most aftermarket EFI systems.

Built-in L.E.D. makes set-up and indexing quick and easy

Plug-and-play with Holley EFI and compatible with other aftermarket EFI systems requiring a cam sync signal

CNC billet housing with black anodized cap provide good looks and excellent durability

Chrysler 426, 440 shaft has a harden and corrosion resistance coating to help resist rust and increase durability