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Kadee 505 HO Scale AHM Rivarossi 6-wheel Coupler Conversion Bolsters

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Kadee 505
Calculated at Checkout
505 HO Scale AHM Rivarossi 6-wheel Coupler Conversion Bolsters.
1pr. Kit

The shorter #505 is for 6-wheel trucks and the longer #508 is for 4-wheel trucks. Of course, there are exceptions like the 72-foot Con-Cor passenger cars that have their 4-wheel trucks mounted closer to the end of the car than usual and therefore use the #505 instead of the normally used #508. Also, there have been some 6-wheel trucks being used as 4-wheel trucks simply by removing the middle set of wheels.

Passenger cars can be equipped with truck-mounted couplers using the correct conversion bolster attachment. Truck-mounted couplers permit closer coupling on radii down to 18" without causing a binding for most passenger cars. Non-Magnetic trucks should be used with Kadee® Magne-Matic® Couplers. Wheels should be changed on AHM and Athearn trucks. Use Kadee® #521 or #522 non-magnetic wheels.

Each kit contains a pair of Draft Gear Boxes, one pair of NO.5® Couplers, #634 Centering Springs, screws, special bolsters, and instructions.
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.