Accel EFI Super Coil For Harley Big Twin Features: Accel's famous Super Coil is now available for fuel injected Twin Cam applications Allows faster rise time, higher voltage and maximum spark energy to the plugs Quicker starting and improved idle Crisper throttle response Fits in the stock location and under most aftermarket coil covers Replaces OEM 31696-07A Measures 2-1/2 W x 4-3/4 H x 3 D