Wisconsin VH4D W4-1770 VG4D V465D Electronic Distributor Module 20120005 This is an ignition module for Wisconsin VH4D, VG4D, W4-1770 and V465D engines equipped with Pertronix electronic distributor Fits distributor models YF50, YF50A, YF50B, YF50C, YF50D, YF50E Wisconsin part # - 20120005 025-003A