Atlas Model Railroad HO Scale Coupler Conversions

The perfect solution for all of your coupler woes. Thanks to our extensive list of HO Scale coupler conversions, it's easier than ever to fit Kadee® Couplers onto your locomotives and rolling stock. Our conversions typically require the least modification to your model, and the How-To Instructions and diagrams make fitting your new couplers a breeze. Remember to always check your coupler heights with our #206 Coupler Height Gauge. We've done the hard work for you, so find the perfect coupler in the list below.*

  Whisker® Metal Coupler Standard Coupler Other Coupler Options

AEM-7

AEM-7 Conversion
Any Medium Centerset Coupler

ALP-44

ALP-44 Conversion
Any Medium Centerset Coupler

Alco B-425 & 426 Century

Alco B-425 & 426 Century Conversion
Any Medium Centerset Coupler

Alco C-424 Phase I and II

Alco C-424 Phase I and II Conversion
Any Medium Centerset Coupler

Alco C-425

Alco C-425 Conversion
Any Medium Centerset Coupler

Alco RS-1

Alco RS-1 Conversion
Any Medium Centerset Coupler

Alco RS-3

Alco RS-3 Conversion
Any Medium Centerset Coupler

Alco RS-11

Alco RS-11 Conversion
Any Medium Centerset Coupler

Alco RSD-4/5

Alco RSD-4/5 Conversion
 
 

Alco RSD-12

Alco RSD-12 Conversion
Any Medium Centerset Coupler

Alco S-1

Alco S-1 Conversion
 
 

Alco S-2

Alco S-2 Conversion
 
 

Alco S-3

Alco S-3 Conversion
 
 

Alco S-4

Alco S-4 Conversion
 
 

EMD F-3

EMD F-3 Conversion
 
 

EMD F-7

EMD F-7 Conversion
 
 

EMD FP-7 Austria

EMD FP-7 Austria Conversion
 
 

EMD FP-7

EMD FP-7 Conversion
 
 

EMD GP-7

EMD GP-7 Conversion
 
 

EMD GP-7 New Production

EMD GP-7 New Production Conversion
Any Medium Centerset Coupler

EMD GP-38

EMD GP-38 Conversion
 
 

EMD GP-38 New Production

EMD GP-38 New Production Conversion
Any Medium Centerset Coupler

EMD GP-40

EMD GP-40 Conversion
 
 

EMD GP-40 New Production

EMD GP-40 New Production Conversion
Any Medium Centerset Coupler

EMD SD-9

EMD SD-9 Conversion
 
 

EMD SD-24

EMD SD-24 Conversion
 
 

EMD SD-24 New Production

EMD SD-24 New Production Conversion
Any Medium Centerset Coupler

EMD SD-35

EMD SD-35 Conversion
 
 

FM H15-44

FM H15-44 Conversion
Any Medium Centerset Coupler

FM H16-44

FM H16-44 Conversion
Any Medium Centerset Coupler

GE C 30-7

GE C 30-7 Conversion
 

or

 

GE U23B

GE U23B Conversion
Any Medium Centerset Coupler

GE U30C

GE U30C Conversion
Any Medium Centerset Coupler

GE U33/36C

GE U33/36C Conversion
 

or

 

GE Dash 8-40B

GE Dash 8-40B Conversion
Any Medium Centerset Coupler

GE Dash 8-40C

GE Dash 8-40C Conversion
Any Medium Centerset Coupler

Caboose, Extended Vision

Caboose, Extended Vision Conversion
 
 

Other Rolling Stock

Other Rolling Stock Conversion
Any Medium Centerset Coupler

Passenger Cars

Passenger Cars Conversion
Any Medium Centerset Coupler

Anywhere a NO.5® is listed, the #28, #58 or #118, #119, #120, #158, #148 Whisker® Coupler can be used in its place.

Newer models with factory-installed knuckle couplers are easily converted using our standard head #148 or scale head #158 Whisker® Couplers.
If you need a longer coupler, use the #146 or scale head #156 Whisker® Coupler.

Shallow cast-on gearbox fix: If you have a Kadee® Coupler that is not moving freely back and forth in a shallow cast-on gearbox. This is because some clone knuckle coupler manufacturers started molding shallow cast-on gearboxes on their models to fix the problems with their drooping clone knuckle couplers. The fix is a simple one. You have to file the top of the coupler shank a few strokes with a file, usually just enough to remove the black coloring to make the Kadee coupler function correctly in the non-standard shallow cast-on gearbox.

*Our conversions are 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.

** Metal Coupler Note: It is not recommended to use a metal coupler directly on a metal surface to avoid the possible electrical crossover or shorting that may cause damage.