Compatibility Guide
Choose the right N-Possible coupler for each installation.
General Compatibility Guidance
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URS series couplers fit into existing coupler boxes
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SBX series couplers are for complete box replacement scenarios
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You can use URS couplers to convert truck mount couplers in MTL trucks, retaining the truck mounting.
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Shank sizes vary by 1 mm of shank length between each size.
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​Short shank couplers (101 series) generally replace “1015” type sizes.
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Long shank couplers (301 series) generally replace “1016” type sizes.
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Medium shank (201 series) is in between.
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Replace MTL style separate boxes on models with SBX couplers.
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Use URS couplers in stock boxes for locomotives.
Detailed Equipment Compatibility List
You can install the N-Possible coupler on almost any N Scale locomotive or car. The table below is our "cheat sheet" for installations we've already done. It's provided to help inspire your own switch to better couplers.