These locomotives are also famous for, and can be identified by, the distinct Jet Turbine Engine–like sounding property of the EMD 710 prime mover.

As of February 2013[update], DLW began building the Dual Cab version, EMD JT46ACe, called WDG-4D, based on the passenger variant WDP-4D locos, same for both-side visibility.

Indian Railways has also developed the WDG-4 series into EMD GT50AC (aka WDG-5), using a v20-710G prime mover, based on the SD80MAC, rated at 5,500 HP (4,130 kW).

The first such locomotive, which would be a Dual-Cab WDG-4D, rolled out to serve Odisha Power Generation Corporation (OPGC), in March 2017.

As of 2024, two new Single-Cab Piggy-face WDG-4 locomotives have been manufactured and rolled out for Obra Thermal Power Station, based at Sonbhadra, Uttar Pradesh.