Kadee's Replacement Product for the #45 coupler is the #145.

The #45 Kadee® Magne-Matic® Coupler features a Metal Coupler, #634 Centering Spring, insulated #234 Draft Gear Box and Lid with side and center screw holes for mounting, which is the same gear box which comes in the NO.5® coupler package.

The #45 Coupler may be mounted with the supplied #234 draft gear box, with the manufacturers cast-on coupler pockets, the insulated #213 draft gear box, which is the same gear box that the 20 Series couplers use, (Purchased Separately) or the insulated #233 draft gear box which is the same gear box that the 30 Series couplers use. (Purchased Separately).

The 40 Series Couplers are metal equivalents to the 20 and 30 series couplers and have the same dimensions as their corresponding coupler numbers, such as the #45 is the same as the #25 and #35 Couplers. These were developed to provide the modeler a metal offset series of couplers to complement the NO.5® Coupler. Although the 20 and 30 Series Couplers are made of very strong plastic many modelers like to use only metal couplers which of course are stronger. The strength of metal couplers over plastic sometimes is only a matter of personal choice and not the particular application, however there are certainly many reasons to use metal couplers when the extra strength and rigidity is needed. It is not recommended to use a metal coupler directly on a metal surface or in a metal draft gear box to avoid the possible electrical crossover or shorting that may cause damage. Use the provided insulated draft gear box or the appropriate insulated plastic 20 or 30 Series Couplers.

Two pair per package

In the series there is no #48 Medium Centerset Coupler. It is the NO.5® Medium Centerset Coupler