USA Trains - Large Scale Coupler Conversions

Once you have lookup our suggested starting coupler* below you can use the link from the model to take you to the How To Instructions and Diagrams for that model; these instructions will help you with the coupler installation process.
USA Trains

Note: Our conversions typically requiring the least modification to a model. The How To Instructions and Diagrams are based of the Original Style Coupler.

Note: If the coupler conversion doesn't have a "New Generation" Type "E" Coupler option listed it is not available. If you would like "New Generation" Type "E" Couplers, you will need to purchase the listed coupler package (in order to have the necessary components for conversion) & then you would need to purchase the appropriate "New Generation" Type "E" Coupler replacement couplers & swap out couplers in original conversion. Use the coupler cross reference chart description or coupler description from Kadee® web site product page to identify the coupler style included in the packaging. The #782, #783, #1782 & #1783 have modified couplers that are not available in the "New Generation" Type "E" Coupler.

Note: Kadee®-RC Couplers can only be body mounted.

Always check the #1-Scale coupler heights with either our #829 or Type "E" #1929 #1-Scale Coupler Height Gauge and check the G-Scale coupler heights with either our #880 or Type "E" #980 G-Scale Coupler Height Gauge. Please visit our trouble shooting page for helpful hints.

Type E
G Coupler

Original Style
G Coupler

G Coupler

Type E
#1 Coupler

Original Style
#1 Coupler

4-6-4 Hudson Steam
Tender only

Dockside 0-6-0T


44 Ton Loco

44 Ton Loco Conversion

20 Ton Loco


F-3 “A”&”B” Units
(Two Options,
Instructions Available)

F-3 “A”&”B” Units - (two options, instructions available) (Pilot) Conversion


F-3 “A”&”B” Units

F-3 “A”&”B” Units - (Pedestal) Conversion

F-3 “A”&”B” Units

F-3 “A”&”B” Units - (Platform) Conversion


GG-1 Conversion







GP-30 (Closer More
Secure Coupling)

GP-30 (Closer more secure coupling) Conversion




PA-1 Conversion


PB-1 Conversion


S-4 Conversion


SD-40-2 Conversion


SD-70 MAC Conversion

NW-2 - Large Diameter
(8 Foot Diameter & Larger)


NW-2 - Small Diameter
(Less Than 8 Foot Diameter)

NW-2 - Small Diameter (Less than 8 Foot Diameter) Conversion

Rolling Stock

*Our conversion’s based on only one model from a production run, there may be inconsistencies in a model’s production run that require a different coupler or model modifications to achieve the proper coupler height for coupler function.