MSD Cam Sync Plug w/ Billet Housing & Built-In LED For Chrysler 426/440 Engines valve body the thermal bypass has a

the thermal bypass has a large restriction in it which reduces cooler flow by 87%

that is why (for the first time) the user has full control over the ring brightness

this system is FMVSS126 compliant

50 Series Big Block Performance Muffler

Does NOT fit 4WD models

MSD Cam Sync Plug w/ Billet Housing & Built-In LED For Chrysler 426/440 Engines valve body the thermal bypass has aMSD'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. Features: Built in L. E. D. makes set up and