Would these couplers work in a BACHMANN HO GP50 NORFOLK SOUTHERN LOCO 61241? I need to replace a broken coupler, which I think it's a EZ Mate Mark (not II). Thanks.
If the couple that broke had a spring on the knuckle then it was an EZ Mt 2. If the coupler is an EZ Mt 1, it has a plastic "cat whisker" holding the knuckle shut. If that is the case replace them both with EZ Mt 2s or the new KD 148.
You do not want to buy NEM couplers they won't fit in the coupler box.