Uncataloged O Scale RailKing MP15AC Diesel Locomotive Announced

August 28, 2026 - M.T.H. Electric Trains has announced an exclusive and uncataloged RailKing O Scale MP15AC Diesel Locomotive in Tacoma Rail livery for M.T.H. Authorized Retailer Public Delivery Track. The locomotive will be offered in two unique cab numbers in extremely limited quantities beginning in September 2026.

30-21399-1 Tacoma Rail MP15AC Diesel Engine w/Proto-Sound 3.0
Cab No. 1524
Early Order Price: $424.95 (plus freight)
Click HERE to order from Public Delivery Track.

30-21400-1 Tacoma Rail MP15AC Diesel Engine w/Proto-Sound 3.0
Cab No. 1525
Early Order Price: $424.95 (plus freight)
Click HERE to order from Public Delivery Track.

ABOUT THE RAILKING MP15 DIESEL LOCOMOTIVE

The MP15 was the last in a line of EMD end-cab switchers that stretched back to the prewar SW1. By the time the MP15 debuted in 1974, the multipurpose road switcher, descended from the Alco RS-series and the EMD GP7, had become the universal locomotive. The cab unit was already a dinosaur and the single-purpose yard engine was rapidly headed for extinction. To create a more versatile switcher, EMD gave the MP15 a longer frame than its predecessor, the SW1500, in order to fit it with the same Blomberg trucks as a road engine. Those better-riding trucks, along with more weight, a larger fuel capacity, and bigger sandboxes, made the MP15 suitable for road duty as well as switching, and allowed EMD to sell more than 500 units before the last MP15 was delivered in 1987.

The MP15 came in two flavors, traditional and modern. The MP15DC used traditional electrical gear and shared the front-mounted radiator and air intakes that had characterized all previous EMD end-cab switchers. It was basically a beefed-up SW1500. The MP15AC, however, incorporated EMD's Dash 2 technology, with solid-state transistors and circuit boards replacing the wiring, switches, and relays found in earlier diesels. Its cooling system was borrowed from the "Tunnel Motors" EMD had created for the Southern Pacific.

The front of the hood was plain, like the rear of a Tunnel Motor, and the radiator air intakes were moved to the sides of the hood, low and at the front of the engine. Not surprisingly, the Southern Pacific was the first customer to order an MP15AC. Because the Dash 2 technology was relatively new and some railroads found it unnecessarily expensive for a lowly switcher, EMD continued to make both the DC and AC versions of the MP15 for most of its production run, and sales for the two models were about equal.

FEATURES

• Intricately Detailed, Durable ABS Body
• Die-Cast Truck Sides, Pilots and Fuel Tank
• Metal Chassis
• Metal Handrails and Horn
• (2) Handpainted Engineer Cab Figures
• Authentic Paint Scheme
• Metal Wheels, Axles and Gears
• (2) Remote-Controlled Proto-Couplers
• Prototypical Rule 17 Lighting
• Directionally Controlled Constant Voltage LED Headlight
• (2) Precision Flywheel-Equipped Motors
• Onboard DCC/DCS Decoder
• Locomotive Speed Control In Scale MPH Increments
• 1:48 Scale Proportions
• Proto-Sound 3.0 With The Digital Command System Featuring Freight Yard Proto-Effects
• Unit Measures: 13" x 2 1/4" x 4 1/4"
• Operates On O-31 Curves

Order directly from:

Public Delivery Track
(805)226-0320
www.publicdeliverytrack.com
pdt212@gmail.com

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