MSD DIS Ignition Tachometer Driver - For Use With Aftermarket Tachometer On Distributorless and Multiple Coil Pack Vehicles Brake Prop Valve -20 x 1 in

-20 x 1 in

#4241 wont fit 1991 and later big-block Gen V & VI engines

- 4 Groove 604-16

Wishbone Rear End Locator

MSD DIS Ignition Tachometer Driver - For Use With Aftermarket Tachometer On Distributorless and Multiple Coil Pack Vehicles Brake Prop Valve -20 x 1 inEver wonder how you can install an aftermarket tachometer on a vehicle with no distributor and multiple coil packs? MSD has the answer with the Distributorless Tach Driver! The compact Tach Driver measures only 1. 5 x 3. 5 x 2 and is potted with a polyurethane compound for vibration and water protection so it can easily be mounted under the hood. It wires inline on the coils 12 volt supply wire where it senses the current going through this wire and