Share
Athearn (ATH)
SKU:ATH-1228
HO EMD SD40-2 Locomotive WAMX #4050 (ATH-1228)
HO EMD SD40-2 Locomotive WAMX #4050 (ATH-1228)
HO-scale EMD SD40-2 locomotive, road number WAMX 4050, is a fully assembled, ready-to-run model designed for realistic operation on HO layouts. This Dash-2 era locomotive captures the silhouette and rugged performance of the original, delivering dependable pulling power and a prototypical presence that suits both modern and vintage HO railroads.
Available in non-sound DCC-ready and sound-equipped forms, the model features authentic detailing such as flexible rubber MU hoses and trainline hoses, see-through cab windows, fuel tanks with gauges, and scale handrails. It rides on a heavy die-cast frame with a 5-pole motor and all-wheel drive for smooth, quiet operation, while RP25 wheels ensure compatibility with most HO track. Lighting includes bi-directional LEDs with front and rear headlights, ditch lights, and beacons where applicable. The non-sound version accepts a 21-pin NEM DCC plug for easy DCC installation; the sound version houses a DCC decoder with SoundTraxx Econami and a single speaker, delivering engine, horn, and bell sounds in both DC and DCC (some functions limited in DC) and full NMRA compatibility in DCC. A minimum radius of 18 inches (22 inches recommended) helps ensure smooth operation on typical hobby layouts.
Exploded View
Exploded View
Parts List
Parts List
Product Manual
Product Manual

Collapsible content
Overview
Features
Needed to Complete
Specifications
-
Example product title
Vendor:VendorRegular price $189.99Regular priceUnit price / perSale price $189.99 -
Example product title
Vendor:VendorRegular price $189.99Regular priceUnit price / perSale price $189.99 -
Example product title
Vendor:VendorRegular price $189.99Regular priceUnit price / perSale price $189.99 -
Example product title
Vendor:VendorRegular price $189.99Regular priceUnit price / perSale price $189.99
- Choosing a selection results in a full page refresh.
- Opens in a new window.