This industry leading coupler features plastic standard coupler with metal knuckle, and #634 standard centering spring and comes complete with insulated draft gearbox and lid. The #21 Magne-Matic® Plastic Coupler may be mounted with the included #213 or #232 Gearbox or with most other manufacturers cast-on coupler pockets.

It is not recommended to use a metal coupler directly on a metal surface or in a metal draft gearbox to avoid possible electrical crossover and shorting that may cause damage.

Refer to our helpful Coupler Conversion Charts to determine the appropriate coupler to use on your model.

Package Includes:
(2) Pair #21 Plastic Shank Couplers - Long Underset Shank
(2) Pair #634 Centering Spring NO.5® Style
(2) Pair #213 055" ID & .100" ID Bushing/Sleeves
(2) Pair #212 Talgo Truck Adaptors
(2) Pair #213 Gearboxes
(2) Pair #232 Gearboxes
(2) #622 Knuckle Springs

#21 Plastic Coupler Features:
Material - Metal Knuckle, Plastic Coupler Shank
Shank Length - Long (25/64") (center hole to back of coupler head)
Coupler Offset - Underset
Knuckle Spring - #622
Centering System - Standard Shank
Centering Spring - #634 Centering Spring NO.5® Style
Head - Standard Head
Works In Place of - #141, long underset "clone" couplers
Works With - #213, #232, #234, #242, most manufacturer cast-on draft gearboxes