Con-Cor 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
4-6-4 Hudson	#148 Tender	#28 Pilot #5 Tender
4-8-8-4 Big Boy		#33 Pilot #27 Tender	#143 Pilot in a #252 Gearbox
BUDD RDC (Plastic Body)		#21
EMD E-7A & B		#31 Pilot #33 Rear
EMD GP-38		#37
EMD GP-40		#37
EMD MP-15		#22
EMD SD-24		#37
EMD SD-35		#37
EMD SD-40		#38
EMD SW-7		#37
All Freight Car Kits (Wood)	#148	#5 (NO.5®)	Any Medium Centerset Coupler
Boxcars 60’ Greenville		#27
Boxcars (Empire Builder Series)	#148	#5 (NO.5®)	Any Medium Centerset Coupler
Box Car PS-1		#27
Flat Car	#148	#5 (NO.5®)	Any Medium Centerset Coupler
Flat Car 54’	#148	#5 (NO.5®)	Any Medium Centerset Coupler
Mill Gondola 54’	#148	#5 (NO.5®)	Any Medium Centerset Coupler
Hopper Greenville		#27
Covered Hopper Airslide		#27
Covered Hopper PS-2		#38	#148 or #158 in a #252 Gearbox
Reefer		#27
1890 Oldie Passenger Car		#33	#143 in a #252 Gearbox
Gunderson 5 Unit Twin Stack	#148	#5 (NO.5®)	Any Medium Centerset Coupler
Amtrak Mail Car (60’ PD Box Car)	#148	#5 (NO.5®)	Any Medium Centerset Coupler
Amtrak Phase III Car		#508 #22
Streamlined Passenger Car	#148 Body Mount	#5 Body Mount #37 Truck Mount
New Passenger Cars - 4 Wheel Trucks		#508
New Passenger Cars - 6 Wheel Trucks		#505
72’ Pass. Cars w/ 4 Wheel Trucks		#505
New Passenger Cars w/ Factory Body Mount	#148 Body Mount

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.