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Broadway Limited Paragon3 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

Steam Locomotives
with Factory Knuckle Couplers

#148 Tender

#5 (NO.5®) Tender
Any Medium Centerset Coupler

2-8-0 Consolidation ATSF 4-8-4 Northern C&O T-1 Milwaukee S-3 4-8-4 N&W Class A 2-6-6-4 N&W Class J N&W Y6b 2-8-8-2 NYC Commodore Vanderbilt Hudson NYC Niagara 4-8-4 PRR I1sa 2-10-0 PRR J1 PRR K4s PRR L1s 2-8-2 PRR M1a/M1b PRR Streamlined K4s PRR T1 Duplex Reading T-1 SP Cab Forward AC4 and AC5 UP Big Boy 4-8-8-4 UP Late Challenger UP MT Class 4-8-2 USRA Mikado 2-8-2 USRA Pacific 4-6-2

Diesel Locomotives
with Factory Knuckle Couplers

#148

#5 (NO.5®)
Any Medium Centerset Coupler

Alco RSD-15 Baldwin Centipede Baldwin Sharknose EMC E1 EMD E6, E7, E8 EMD F3, F7 EMD NW2, SW7 Switcher EMD SD40-2 EMD SD45 EMD SD7 - SD9 EMD SW1500 GE AC6000 with Smoke GE C30-7 GE ES44AC

Electric Locomotives

#148

#5 (NO.5®)
Any Medium Centerset Coupler

PRR GG1 (2019 Production) PRR GG1 (2021 Production) PRR P5a Boxcab

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.