Repair your MDC Box Cab with these 4-pin dog bone sets. These are designed to press-fit onto the 1/8" gear shaft in the trucks, which often split with age. The coupler that fits into the lower gear is also included, allowing repair of both damaged and lost parts.
4 connectors are enough to repair 2 Box Cab engines, and these may fit the MDC Climax loco as well.
Black ABS/ASA plastic. Engineering preview image shows gray parts to better highlight the detail.