Shop MTH diesel engines for sale, from classic F3s and road switchers to modern SD70ACe and GE power. Find RailKing and Premier O Gauge diesel engines for freight and passenger service.
Trainz inventory can include new, pre-owned, and discontinued MTH diesels. Shop more MTH Trains, browse MTH O Gauge Trains, or compare O Gauge Diesel Locomotives from other manufacturers.
MTH diesel locomotives span several generations of American railroading. F-units bring the classic streamlined cab-unit look, GP-series road switchers fit a wide range of railroad jobs, and six-axle SD power belongs naturally on heavier trains. MTH also modeled GE, ALCO, and Fairbanks-Morse diesels, giving O Gauge operators plenty of choices beyond EMD.
Start with the railroad and era you want to model, then look at RailKing or Premier, locomotive size, minimum curve, electronics, and the job the engine needs to do. An MTH F3 heading a passenger consist and an SD70ACe pulling modern freight may both be diesels, but they're built for very different railroad scenes.
The MTH F3 is a natural choice for transition-era and early diesel railroading. MTH offered F3 locomotives in O Gauge across different product lines and road names, including powered A units, matching B units, and multi-unit combinations.
Matching an older F3 takes a little homework. If you're building an A-B-A consist or replacing a missing unit, compare the road name, paint scheme, product line, item number, powered or non-powered configuration, and electronics. Two MTH F3s that look similar aren't necessarily matching releases.
The MTH GP38-2 represents the versatile four-axle road-switcher side of diesel railroading. Premier GP38-2 locomotives appeared in numerous railroad schemes, making this prototype a useful choice for switching, local freight, and road service.
Six-axle power changes the equation. MTH's SD-series lineup includes modern locomotives such as the SD70ACe, with versions appearing in both RailKing and Premier. These larger MTH diesel engines make more sense at the head of contemporary freight than alongside the early cab units of the F3 era, and the exact model's curve requirements are worth checking before you buy.
An MTH diesel lineup doesn't have to be all F-units, Geeps, and SDs. GE power is another important part of the catalog, including Dash-series locomotives and more modern ES44AC models. MTH also modeled ALCO and Fairbanks-Morse prototypes for operators looking beyond the familiar EMD choices.
A Train Master, an ALCO diesel, and a modern GE road locomotive each bring a different profile and era to an O Gauge railroad. Shopping by prototype as well as road name can uncover some of the more interesting MTH diesel locomotives to add to a layout or collection.
The shell doesn't tell you everything about a used MTH diesel locomotive. Depending on the release, you may encounter Proto-Sound 2.0 or Proto-Sound 3.0, DCS operation, DCC capability, speed control, remote couplers, lighting effects, smoke, and different sound packages.
Identify the MTH item number whenever possible and check the listed operating features, electronics generation, minimum curve, and condition. Two versions of the same diesel prototype can be very different purchases once you put them on the track.
Sometimes finding another F3, GP38-2, SD-series locomotive, or GE diesel isn't enough. You may need a particular railroad, road number, paint scheme, product line, or Proto-Sound version to match equipment you already own.
Trainz buys model train collections, so used, collectible, and discontinued MTH diesel locomotives can return to Trainz.com long after their original release. Individual collectible listings include photos and condition information to help you evaluate the actual locomotive for sale when the right one comes back around.
Usually a shorter RailKing diesel or road switcher. Check the minimum curve for the exact model before buying.
Because MTH released the same prototype in different product lines and Proto-Sound generations. Item number and electronics version matter.
Yes, if the track, curves, and control setup are compatible. The biggest differences are usually size, proportions, and minimum curve requirements.
Choose the GP38-2 for versatile road-switcher service and the SD70ACe for heavier modern freight. Your era and curve size should guide the decision.
No. DCS capability depends on the electronics installed in the specific locomotive, so verify the Proto-Sound version before buying.
Yes, on models equipped for it. Smoke features vary by release and may not be present on every MTH diesel.
Yes. Trainz.com can have discontinued MTH diesels, matching units, and older road numbers as pre-owned collections come into inventory.
To browse diesel locomotives across every scale and all manufacturers, explore Model Train Diesel Locomotives. For locomotives, rolling stock, train sets, and other equipment across scales and manufacturers, shop all Model Trains at Trainz.
