Bring big power to your HO scale railroad with the Walthers Mainline 910-21030 EMD SD70M. Introduced in 1992 and built through 2004, this later modified version of the SD70, noted by the "M" in the designation, features a wide nose and North American Safety Cab. Based on the Phase I prototype, the layout-ready model captures the locomotive's characteristic details with all-new tooling.

This 910-21030 unit wears Southern Pacific paint as road number #9800 and is equipped with ESU Sound and DCC for operation on both DCC and standard DC layouts. It offers a correct North American Safety Cab, flush radiators for early production units, prototype-specific HTCR-1a or HTCR-1b trucks, a brass Nathan K5 air horn, cab interior, and a 5000-gallon fuel tank. The Walthers Proto drive provides a five-pole skew-wound motor, 14:1 gear ratio, dual machined brass flywheels, and a heavy die-cast chassis. Minimum radius is 18", with 22" or larger recommended.

Key Features:
- HO scale (1:87) fully assembled diesel locomotive, item 910-21030
- Walthers Mainline brand, Phase I version
- Southern Pacific road number #9800
- ESU Sound and DCC for DCC or DC layouts, 21-pin DCC plug
- Four air horns and two bells changeable by CV
- LED lighting with working ditch lights, constant and directional
- Correct North American Safety Cab and HTCR-1a/1b trucks
- Brass Nathan K5 air horn, cab interior, 5000-gallon fuel tank
- Minimum radius 18" (22" or larger recommended)