{"title":"Model Train Couplers \u0026 Conversion Parts","description":"\u003csection class=\"mm-collection-copy\"\u003e\u003cp\u003eShop model train couplers, conversion kits, gearboxes, uncouplers and installation tools for HO, O, G, HOn3 and other railroad scales. Match the exact scale, shank length, center-set or offset position, gearbox and equipment family before ordering.\u003c\/p\u003e\n\u003ch2\u003eFitment matters\u003c\/h2\u003e\n\u003cp\u003eCouplers that look similar may use different mounting heights, shank lengths or draft gear. Use the manufacturer part number and equipment-specific conversion information rather than scale alone.\u003c\/p\u003e\n\u003ch2\u003eComplete the installation\u003c\/h2\u003e\n\u003cp\u003ePair the correct coupler with compatible gearboxes, washers, screws, gauges, uncouplers and tools. Browse all \u003ca href=\"\/collections\/model-train-parts-accessories\"\u003emodel train parts and accessories\u003c\/a\u003e or return to the \u003ca href=\"\/collections\/model-trains\"\u003emodel train department\u003c\/a\u003e.\u003c\/p\u003e\u003c\/section\u003e","products":[{"product_id":"kadee-1020-coupler-and-special-purpose-tweezers-kad1020","title":"Kadee 1020 Coupler and Special Purpose Tweezers","description":"\u003cp\u003e\u003cstrong\u003eKadee 1020 Coupler and Special Purpose Tweezers\u003c\/strong\u003e is the exact Kadee item identified by manufacturer part number 1020. The product photo is tied to this source record so you can confirm the package and intended use before ordering.\u003c\/p\u003e\u003ch2\u003eHow it fits the project\u003c\/h2\u003e\u003cp\u003eCollectors and builders use this as a building material or detail item for scale-model work. Check the manufacturer scale, dimensions, and package quantity against the build before opening it.\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Kadee\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e 1020\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping weight:\u003c\/strong\u003e 14 g\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eBrowse \u003ca href=\"\/collections\/plastic-model-kits\"\u003eplastic model kits and building supplies\u003c\/a\u003e.\u003c\/p\u003e","brand":"Kadee","offers":[{"title":"Default Title","offer_id":53053191651640,"sku":"KAD1020","price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/1020__07484.jpg?v=1790765643"},{"product_id":"kadee-148-50-ho-no-148-whisker-couplers-50-pairs-kad14850","title":"Kadee 148-50 HO No. 148 Whisker Couplers — 50 Pairs","description":"\u003cp\u003eThe Kadee 148-50 bulk pack supplies 50 pairs of No. 148 metal couplers for larger HO fleet-conversion projects. The medium centerset format and integral Whisker springs reduce the separate parts needed when fitting a suitable existing coupler pocket.\u003c\/p\u003e\u003ch2\u003eFeatures and package contents\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e50 pairs (100 individual couplers); draft gearboxes are not included.\u003c\/li\u003e\n\u003cli\u003eMedium 9\/32-inch shank, measured from mounting-hole center to the back of the head.\u003c\/li\u003e\n\u003cli\u003eStandard head; metal shank and knuckle; No. 622 knuckle spring.\u003c\/li\u003e\n\u003cli\u003eIntegral Whisker centering system.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility and installation\u003c\/h2\u003e\u003cp\u003eFits suitable No. 5-style installations and Kadee No. 213, 232, 234, 242, 252 and 262 gearboxes. Check the exact model and pocket depth; some molded pockets require modification. Avoid mounting a metal coupler directly on conductive metal surfaces. Installation and height adjustment are required; car, mounting screws and gearboxes are not supplied.\u003c\/p\u003e\u003cp\u003eSmall hobby parts; intended for modelers ages 14 and older. Manufacturer warning: cancer and reproductive harm.\u003c\/p\u003e\u003cp\u003eBrowse more \u003ca href=\"\/collections\/kadee\"\u003eKadee products\u003c\/a\u003e and \u003ca href=\"\/collections\/model-train-parts-accessories\"\u003emodel train accessories\u003c\/a\u003e.\u003c\/p\u003e","brand":"Kadee","offers":[{"title":"Default Title","offer_id":53053209837880,"sku":"KAD14850","price":136.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/KAD14850-fusion-04.jpg?v=1790818786"},{"product_id":"kadee-1746-o-sbe-bottom-shelf-long-couplers-2-pairs-kad1746","title":"Kadee 1746 O SBE Bottom-Shelf Long Couplers — 2 Pairs","description":"\u003cp\u003eChoose Kadee 1746 for compatible O-scale installations needing the longer centerset SBE bottom-shelf coupler. Its metal head uses the New Generation hidden-knuckle-spring arrangement, with plastic gearboxes supplied for mounting.\u003c\/p\u003e\u003ch2\u003eFeatures and package contents\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFour No. 1746 metal SBE bottom-shelf couplers with long centerset shanks.\u003c\/li\u003e\n\u003cli\u003eFour No. 817 plastic gearboxes with lids and five No. 850 O-scale centering springs.\u003c\/li\u003e\n\u003cli\u003eCompatible with Kadee O-scale couplers.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility and installation\u003c\/h2\u003e\u003cp\u003eAssembly and fitting are required. Confirm height, mounting space and clearance on your model. Use the included No. 817 insulated gearboxes or a suitable alternative arrangement; avoid electrically conductive mounting that could cause shorts. Mounting hardware must suit the model. Rolling stock, tools and alternative gearboxes are not included.\u003c\/p\u003e\u003cp\u003eSmall hobby parts; intended for modelers ages 14 and older. Manufacturer warning: cancer and reproductive harm.\u003c\/p\u003e\u003cp\u003eBrowse more \u003ca href=\"\/collections\/kadee\"\u003eKadee products\u003c\/a\u003e and \u003ca href=\"\/collections\/model-train-parts-accessories\"\u003emodel train accessories\u003c\/a\u003e.\u003c\/p\u003e","brand":"Kadee","offers":[{"title":"Default Title","offer_id":53053239492920,"sku":"KAD1746","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/KAD1746-jr-01.jpg?v=1790820834"},{"product_id":"kadee-1799-coupler-conversion-kit","title":"Kadee 1799 No. 1 Scale LGB Locomotive Coupler Conversion","description":"\u003cp\u003eKadee 1799 provides large-offset No. 1-scale couplers for the specified LGB 2-6-2 tank and GE2\/4 slant-rod passenger locomotives. The kit includes fixed truck-mount gearboxes and the clips and shims needed for this conversion.\u003c\/p\u003e\u003ch2\u003eFeatures and package contents\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eTwo couplers, two fixed draft gearboxes and two lids.\u003c\/li\u003e\n\u003cli\u003eTwo No. 2 x 3\/8-inch screws, two No. 4 x 3\/8-inch screws, five No. 861 centering springs and one No. 1875 knuckle spring.\u003c\/li\u003e\n\u003cli\u003eIncludes four axle clips and ten 0.015-inch washer shims.\u003c\/li\u003e\n\u003cli\u003eOriginal-style No. 1 head, corresponding to a 1:32 scale ratio.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility and installation\u003c\/h2\u003e\u003cp\u003eAssembly and fitting are required. Check the exact locomotive production version against the conversion instructions; this is not a universal LGB locomotive coupler. Verify coupler height, free centering and clearance after assembly. The vehicle, track and tools are not included.\u003c\/p\u003e\u003cp\u003eSmall hobby parts; intended for modelers ages 14 and older. Manufacturer warning: cancer and reproductive harm.\u003c\/p\u003e\u003cp\u003eBrowse more \u003ca href=\"\/collections\/kadee\"\u003eKadee products\u003c\/a\u003e and \u003ca href=\"\/collections\/model-train-parts-accessories\"\u003emodel train accessories\u003c\/a\u003e.\u003c\/p\u003e","brand":"Kadee","offers":[{"title":"Default Title","offer_id":53053243064632,"sku":"KAD1799","price":14.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/KAD1799-nitro-full.jpg?v=1790821560"},{"product_id":"kadee-233-ho-scale-coupler-boxes-lids-and-springs","title":"Kadee 233 HO 30-Series Gearboxes and Lids — 10 Pairs","description":"\u003cp\u003eKadee 233 supplies the three-part gearbox arrangement used for suitable HO 30-Series coupler installations. The separate box, gearbox lid and spring lid support assembly of the appropriate torsion-centering setup.\u003c\/p\u003e\u003ch2\u003eFeatures and package contents\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eTen pairs of plastic gearbox assemblies.\u003c\/li\u003e\n\u003cli\u003eEach assembly uses a draft gearbox, gearbox lid and spring lid.\u003c\/li\u003e\n\u003cli\u003eDesigned to work with the No. 621 torsion centering spring.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility and installation\u003c\/h2\u003e\u003cp\u003eAssemble with the correct 30-Series coupler and spring arrangement, following its instructions. A suitable 2-56 screw is commonly used through the center mounting hole; screw length depends on the model. Check height and free movement before operation. This is a gearbox-and-lid pack, not a coupler kit; couplers, centering springs and mounting screws are separate.\u003c\/p\u003e\u003cp\u003eSmall hobby parts; intended for modelers ages 14 and older. Manufacturer warning: cancer and reproductive harm.\u003c\/p\u003e\u003cp\u003eBrowse more \u003ca href=\"\/collections\/kadee\"\u003eKadee products\u003c\/a\u003e and \u003ca href=\"\/collections\/model-train-parts-accessories\"\u003emodel train accessories\u003c\/a\u003e.\u003c\/p\u003e","brand":"Kadee","offers":[{"title":"Default Title","offer_id":53053282419000,"sku":"KAD233","price":7.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/KAD233-fusion-01.jpg?v=1790819899"},{"product_id":"kadee-ho-312-between-the-rails-non-delayed-uncoupler-kad312","title":"Kadee HO 312 Between the Rails Non-Delayed Uncoupler","description":"\u003cp\u003e\u003cstrong\u003eKadee HO 312 Between the Rails Non-Delayed Uncoupler\u003c\/strong\u003e is the exact Kadee release identified by part number 312. The product photo and package data have been checked against the matching item record.\u003c\/p\u003e\u003ch2\u003eAt the workbench\u003c\/h2\u003e\u003cp\u003eUse the manufacturer part number when matching this item to a layout plan, repair list, or project notes. The package is sold as the specific item shown; confirm fit, scale, and application before ordering.\u003c\/p\u003e\u003ch2\u003eProduct details\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Kadee\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e 312\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping weight:\u003c\/strong\u003e 18 g\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kadee","offers":[{"title":"Default Title","offer_id":53053300048184,"sku":"KAD312","price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/KAD-312-2__70672.jpg?v=1790777546"},{"product_id":"kadee-334-ho-uncoupler-gluing-jig-for-312-321-and-322-kad334","title":"Kadee 334 HO Uncoupler Gluing Jig for 312, 321 and 322","description":"\u003cp\u003ePosition a compatible between-the-rails magnetic uncoupler while its adhesive sets with the Kadee 334 gluing jig. This reusable HO installation tool centers the magnet and supports it at the specified height.\u003c\/p\u003e\u003ch2\u003eFeatures and package contents\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOne jig for Kadee No. 312, 321 and 322 permanent-magnet uncouplers.\u003c\/li\u003e\n\u003cli\u003eReversible working faces: one for No. 312, the other for No. 321 or 322.\u003c\/li\u003e\n\u003cli\u003eSteel insert holds the magnet against the selected face.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility and installation\u003c\/h2\u003e\u003cp\u003ePlace the magnet on the correct face and rest the jig across both railheads. Recess the ties if necessary so the magnet does not hold the jig above the rails; the instructions specify slight clearance below the magnet. Apply suitable adhesive and allow it to set fully before lifting away the jig. Uncoupler magnet, glue and track are not included.\u003c\/p\u003e\u003cp\u003eSmall hobby parts; intended for modelers ages 14 and older. Manufacturer warning: cancer and reproductive harm.\u003c\/p\u003e\u003cp\u003eBrowse more \u003ca href=\"\/collections\/kadee\"\u003eKadee products\u003c\/a\u003e and \u003ca href=\"\/collections\/model-train-parts-accessories\"\u003emodel train accessories\u003c\/a\u003e.\u003c\/p\u003e","brand":"Kadee","offers":[{"title":"Default Title","offer_id":53053303882040,"sku":"KAD334","price":5.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/KAD334-trainworld-full.jpg?v=1790820941"},{"product_id":"kadee-503-ho-arch-bar-trucks-with-couplers-kad503","title":"Kadee 503 HO Arch Bar Trucks with Couplers","description":"\u003cp\u003eEquip suitable HO rolling stock with arch-bar trucks and truck-mounted couplers using Kadee 503. This pair combines the older braced sideframe style with 33-inch ribbed-back wheels and No. 148 couplers.\u003c\/p\u003e\u003ch2\u003eFeatures and package contents\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eTwo assembled metal trucks with sprung bolsters and 33-inch ribbed-back wheels.\u003c\/li\u003e\n\u003cli\u003eCode 110 (0.110-inch-wide) nonmagnetic RP-25 wheels, insulated axles and No. 637 springs.\u003c\/li\u003e\n\u003cli\u003eIncludes two No. 148 couplers, two gearboxes with lids, two 0-48 screws, two insulating bushings, two No. 209 washers and two No. 622 springs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility and installation\u003c\/h2\u003e\u003cp\u003eCheck the exact car and mount on an appropriate flat bolster with suitable No. 2 or 2-56 screws; truck-mounting screws are not included. Assemble the supplied couplers onto the truck platforms before use. Check wheel gauge, clearance and coupler height. Code 110 is wheel width, not rail height. Car and track are not included.\u003c\/p\u003e\u003cp\u003eSmall hobby parts; intended for modelers ages 14 and older. Manufacturer warning: cancer and reproductive harm.\u003c\/p\u003e\u003cp\u003eBrowse more \u003ca href=\"\/collections\/kadee\"\u003eKadee products\u003c\/a\u003e and \u003ca href=\"\/collections\/model-train-parts-accessories\"\u003emodel train accessories\u003c\/a\u003e.\u003c\/p\u003e","brand":"Kadee","offers":[{"title":"Default Title","offer_id":53053325836600,"sku":"KAD503","price":15.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/KAD503-midwest-og.png?v=1790819522"},{"product_id":"kadee-505-ho-rivarossi-6-wheel-coupler-conversion-kit-kad505","title":"Kadee 505 HO Rivarossi 6-Wheel Coupler Conversion Kit","description":"\u003cp\u003eConvert suitable AHM\/Rivarossi six-wheel passenger-car trucks to Kadee coupling with the 505 conversion kit. Its shorter bolster arrangement also suits certain four-wheel applications where the truck is mounted unusually close to the car end.\u003c\/p\u003e\u003ch2\u003eFeatures and package contents\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eOne pair of conversion bolsters.\u003c\/li\u003e\n\u003cli\u003eIncludes one pair of No. 5 couplers, draft gearboxes, No. 634 centering springs, screws and instructions.\u003c\/li\u003e\n\u003cli\u003eShorter bolster configuration; also specified for the relevant 72-foot Con-Cor cars with end-positioned four-wheel trucks.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility and installation\u003c\/h2\u003e\u003cp\u003eAssembly and fitting are required. Confirm the exact truck and car against the conversion instructions; wheel count alone does not determine fit. The 72-foot Con-Cor exception uses No. 505, and some six-wheel trucks have had their center axles removed. Use suitable nonmagnetic trucks and wheels; Kadee specifies No. 521 or 522 replacement wheels where appropriate. Check clearance, coupler height and operation through your curves. Cars, complete trucks and wheelsets are not included.\u003c\/p\u003e\u003cp\u003eSmall hobby parts; intended for modelers ages 14 and older. Manufacturer warning: cancer and reproductive harm.\u003c\/p\u003e\u003cp\u003eBrowse more \u003ca href=\"\/collections\/kadee\"\u003eKadee products\u003c\/a\u003e and \u003ca href=\"\/collections\/model-train-parts-accessories\"\u003emodel train accessories\u003c\/a\u003e.\u003c\/p\u003e","brand":"Kadee","offers":[{"title":"Default Title","offer_id":53053327212856,"sku":"KAD505","price":7.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/files\/KAD505-trainworld-full.jpg?v=1790819729"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/6049\/2625\/collections\/mm-model-train-parts-accessories-collection-20261001_9971da69-7732-441f-b90e-bce337e9d0b2.png?v=1792093276","url":"https:\/\/munclemikes.com\/collections\/model-train-couplers-conversion-parts.oembed","provider":"Muncle Mikes","version":"1.0","type":"link"}