{"title":"Gearboxes \/ Gear Reducers","description":"\u003ch2\u003eGearboxes \u0026amp; Gear Reducers for Pressure Washers\u003c\/h2\u003e\n\u003cp\u003eConnect your engine to your pump with professional gearboxes and gear reducers designed for pressure washer applications. Our selection includes General Pump, AR, and Interpump gearboxes in multiple shaft sizes and RPM ratings, plus replacement seals, gaskets, and accessories for maintenance and repairs.\u003c\/p\u003e\n\u003ch3\u003eComplete Gearbox Solutions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaft Sizes:\u003c\/strong\u003e 3\/4\", 1\", and 1-1\/8\" engine shaft configurations for various engine models\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRPM Ratings:\u003c\/strong\u003e 1450 RPM and 1750 RPM gearboxes matched to engine and pump speeds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMajor Brands:\u003c\/strong\u003e General Pump, AR (Annovi Reverberi), and Interpump gearboxes for reliable power transfer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplacement Parts:\u003c\/strong\u003e Oil seals, o-rings, gaskets, sight glasses, oil caps, and mounting hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhether you're building a new pressure washer or replacing a worn gearbox, our inventory covers the essential components for connecting engines to pumps. Gearboxes reduce engine RPM to the optimal pump speed while providing proper alignment and power transfer. Replacement seals and gaskets ensure leak-free operation and extend gearbox service life in demanding commercial applications.\u003c\/p\u003e\n\u003cp\u003eLooking for gearbox parts? Browse our \u003ca href=\"\/collections\/gearbox-replacement-parts\" title=\"Gearbox Replacement Parts\"\u003egearbox replacement parts\u003c\/a\u003e. Need pumps? Check out our \u003ca href=\"\/collections\/pumps\" title=\"Pumps\"\u003epressure washer pumps\u003c\/a\u003e and \u003ca href=\"\/collections\/all-products\" title=\"All Products\"\u003ecomplete product catalog\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"ygr1125p31-b31-1-1-8-engine-shaft-general-pumps-all","title":"YGR1125P31 B31 1-1\/8\" engine shaft General Pumps All","description":"\u003cp\u003eB-31 Gear Box PA\u003cbr\u003eHonda IGX800, CRX750 Other v-twin engines\u003c\/p\u003e\n\u003cp\u003eYGR1125P31 B31 1-1\/8\" engine shaft\u003c\/p\u003e\n\u003cp\u003eGeneral Pumps \u003c\/p\u003e\n\u003cp\u003eInstallation Warranty:\u003c\/p\u003e\n\u003cp\u003eThere is no warranty on improper installation of the gear box assembly. If you do not feel confident to install this on your own motor, we highly recommend taking it to a reputable service center to install it for you. \u003c\/p\u003e\n\u003cp\u003eProper installation on these gear box assemblies is the most important thing you can do. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003ePlease click the link below \u003c\/p\u003e\n\u003cp\u003e** \u003ca href=\"https:\/\/www.mpwsr.com\/post\/installation-guide-pa-b-18-b-24-b-31-gear-box-assembly\" target=\"_blank\"\u003eInstalation guide\u003c\/a\u003e ** \u003c\/p\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":48413092839721,"sku":"YGR1125P31","price":399.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/file_31711a35-9236-47c8-987d-4b8c5f057871.jpg?v=1714669839"},{"product_id":"ptg-66dx40gg1-vrt3-310ez-w-bypass-thermal","title":"PTG 66DX40GG1-VRT3-310EZ W\/BYPASS \u0026 THERMAL","description":"","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":48413127934249,"sku":"6413","price":660.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/Image-Coming-Soon-Placeholder.png?v=1779391941"},{"product_id":"o-ring-gasket-gear-box","title":"O-Ring Gasket, Gear Box","description":"","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":48413138682153,"sku":"AR1520590","price":5.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/gporing_c746b561-d9ae-419f-8659-4805f498c2dc.jpg?v=1721244701"},{"product_id":"interpump-gearbox-with-1-1-8-shaft","title":"Interpump gearbox with 1-1\/8\" shaft","description":"","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":48413153689897,"sku":"ZGRS1125","price":387.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/ZGRS1000.webp?v=1721229748"},{"product_id":"gp-1-1-8-hollow-shaft-for-gx690-b24","title":"GP 1-1\/8\" Hollow shaft for V-twin enginesB24 Gear Box","description":"\u003cp\u003eB-24 Gear Box\u003c\/p\u003e\n\u003cp\u003eGP 1-1\/8\" Hollow shaft for Honda GX690, CRX680, CRX750\u003c\/p\u003e\n\u003cp\u003eB24 Gear Box\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eInstallation Warranty:\u003c\/p\u003e\n\u003cp\u003eThere is no warranty on improper installation of the gear box assembly. If you do not feel confident to install this on your own motor, we highly recommend taking it to a reputable service center to install it for you. \u003c\/p\u003e\n\u003cp\u003eProper installation on these gear box assemblies is the most important thing you can do. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003ePlease click the link below \u003c\/p\u003e\n\u003cp\u003e** \u003ca href=\"https:\/\/www.mpwsr.com\/post\/installation-guide-pa-b-18-b-24-b-31-gear-box-assembly\" target=\"_blank\"\u003eInstalation guide\u003c\/a\u003e ** \u003c\/p\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":48413171515689,"sku":"YGR1125P","price":327.27,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/file_1c0c13cd-8259-4222-b9eb-0b8235b8cfa3.jpg?v=1714670579"},{"product_id":"gearbox-1-shaft-24hp-for-crx-680-motors","title":"Gearbox 1\" shaft for 1\" v-twin engines up to 24hp","description":"\u003cp\u003eGear Box 1\" Engine Shaft General Pump B24P\u003c\/p\u003e\n\u003cp\u003eFits Honda GX630, CRX680 (1st generation with 1\" shaft), Predator 670cc\u003c\/p\u003e\n\u003cp\u003eB-24P Gear Box 1”\u003c\/p\u003e\n\u003cp\u003eGeneral Pump\u003c\/p\u003e\n\u003cp\u003eInstallation Warranty:\u003c\/p\u003e\n\u003cp\u003eThere is no warranty on improper installation of the gear box assembly. If you do not feel confident to install this on your own motor, we highly recommend taking it to a reputable service center to install it for you. \u003c\/p\u003e\n\u003cp\u003eProper installation on these gear box assemblies is the most important thing you can do. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003ePlease click the link below \u003c\/p\u003e\n\u003cp\u003e** \u003ca href=\"https:\/\/www.mpwsr.com\/post\/installation-guide-pa-b-18-b-24-b-31-gear-box-assembly\" target=\"_blank\"\u003eInstalation guide\u003c\/a\u003e ** \u003c\/p\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":48413176201513,"sku":"YGR1000P","price":336.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/YGR1000.webp?v=1720459539"},{"product_id":"gear-box-oil-cap-fits-all-models","title":"Gear Box Oil Cap fits all models","description":"\u003cp\u003eGear Box Oil Cap fits all models\u003c\/p\u003e\u003cp\u003eFor B series Gearboxes from PA \/ General Pump\u003c\/p\u003e\u003cp\u003eB-18\u003c\/p\u003e\u003cp\u003eB-24\u003c\/p\u003e\u003cp\u003eB-31\u003c\/p\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":48413176627497,"sku":"Y15372600","price":10.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/file_79331734-e2b8-4506-9b26-fc52d96436a9.png?v=1714670600"},{"product_id":"gear-box-1-engine-shaft-general-pump-b18","title":"Gear Box 1\" Engine Shaft General Pump B18","description":"\u003cp\u003eGear Box 1\" Engine Shaft General Pump B18\u003c\/p\u003e\n\u003cp\u003eFits GX390 340 270, CRX420, Predator420\u003c\/p\u003e\n\u003cp\u003eB-18 Gear Box 1”\u003c\/p\u003e\n\u003cp\u003eGeneral Pump\u003c\/p\u003e\n\u003cp\u003eInstallation Warranty:\u003c\/p\u003e\n\u003cp\u003eThere is no warranty on improper installation of the gear box assembly. If you do not feel confident to install this on your own motor, we highly recommend taking it to a reputable service center to install it for you. \u003c\/p\u003e\n\u003cp\u003eProper installation on these gear box assemblies is the most important thing you can do. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003ePlease click the link below \u003c\/p\u003e\n\u003cp\u003e** \u003ca href=\"https:\/\/www.mpwsr.com\/post\/installation-guide-pa-b-18-b-24-b-31-gear-box-assembly\" target=\"_blank\"\u003eInstalation guide\u003c\/a\u003e ** \u003c\/p\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":48413176758569,"sku":"YGR1000","price":290.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/file_bb6fe20e-e685-4b47-8e11-ffa593c9b9d8.jpg?v=1714670605"},{"product_id":"gear-box-1-engine-shaft-comet-rw-1450rpm-pumps","title":"GEAR BOX 1\" engine shaft  Comet RW 1450rpm pumps","description":"","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":48413176856873,"sku":"5005.0236.00","price":330.8,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/Image-Coming-Soon-Placeholder.png?v=1779391941"},{"product_id":"gear-box-1-1-8-shaft-comet-tw-tws-pump-1450-rpm","title":"GEAR BOX 1 1\/8\" Shaft Comet TW\/TWS pump 1450 rpm","description":"","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":48413176922409,"sku":"5005.0237.00","price":315.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/Image-Coming-Soon-Placeholder.png?v=1779391941"},{"product_id":"comet-5030-fully-plumbed-pump","title":"Comet ZWD 5030 Fully Plumbed Pump","description":"","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":48413201891625,"sku":"3602","price":472.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/background-editor_output_e4e8dc74-d69f-45f9-839f-f62d92f5f823.png?v=1720145256"},{"product_id":"ar-gearbox-3-4-engine-shaft-1450-rpm","title":"AR GEARBOX 3\/4\" engine shaft 1450 RPM","description":"\u003cp\u003eAR GEARBOX 3\/4\" engine shaft 1450 RPM\u003c\/p\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":48413240492329,"sku":"AR1691","price":252.4,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/Screenshot_2024-07-02_113704.webp?v=1751560921"},{"product_id":"ar-gearbox-1-1-8-engine-shaft-1750-rpm-pump","title":"AR Gearbox 1-1\/8\" engine shaft 1750 RPM pump","description":"\u003cp\u003eAR Gearbox 1-1\/8\" engine shaft 1750 RPM pump\u003c\/p\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":48413240623401,"sku":"AR1670","price":315.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/Screenshot_2024-07-02_113704.webp?v=1751560921"},{"product_id":"ar-gearbox-1-engine-shaft-1750-rpm-pump","title":"AR Gearbox 1\" engine shaft 1750 RPM pump","description":"\u003cp\u003eAR Gearbox 1\" engine shaft 1750 RPM pump\u003c\/p\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":48413240754473,"sku":"AR1697","price":262.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/CR_2.jpg?v=1719934593"},{"product_id":"gearbox-seal-large-b18-31-gear-box-o-ring","title":"PA Gear Box Seal Large B18-31 Gear Box O-Ring","description":"\u003cp\u003e\u003cstrong\u003eGearbox Seal Large\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eGear Box O-Ring For PA:\u003c\/p\u003e\u003cp\u003eB18\u003c\/p\u003e\u003cp\u003eB24\u003c\/p\u003e\u003cp\u003eB31\u003c\/p\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":48413357179177,"sku":"Y10321111","price":6.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/file_dfb65dcf-8517-4b22-a045-fabc30f9b247.jpg?v=1714671534"},{"product_id":"gearbox-seal-small-b18-31-gearbox-o-ring","title":"PA Gear Box Seal Small B18-31 Gearbox O-Ring","description":"\u003cp\u003e\u003cstrong\u003eGearbox Seal Small\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eGearbox O-Ring For PA:\u003c\/p\u003e\u003cp\u003eB18\u003c\/p\u003e\u003cp\u003eB24\u003c\/p\u003e\u003cp\u003eB31\u003c\/p\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":48413357310249,"sku":"Y10321056","price":4.15,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/file_edd9c433-3d23-4463-b419-8c82d84a0db1.jpg?v=1714671536"},{"product_id":"product_e4b42bc8-f1cd-4226-814c-3ea8e980cb6d","title":"Y15373400 PA Gearbox Oil Sight Glass","description":"\u003cp\u003eY15373400 PA gearbox oil sight glass\u003c\/p\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":48581992382761,"sku":"Y15373400","price":15.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/145-15.3734.00-1-600x388.jpg?v=1761668830"},{"product_id":"product_93ddd10f-ecf9-4c43-91fd-4cc96428e55e","title":"YGR1125P40","description":"\u003cp\u003eGearbox, B40, 1-1\/8\" Engine Shaft\u003c\/p\u003e\n\u003cp\u003eThe gearbox was not designed to bear weight pf the pump. The pump needs to be fixed to the\u003cbr\u003eframe of the machine with adequate supports.\u003cbr\u003eSupports allowing for connection of the pump towards the engine can help during the assembly process\u003c\/p\u003e\n\u003cp\u003eInstallation Warranty:\u003c\/p\u003e\n\u003cp\u003eThere is no warranty on improper installation of the gear box assembly. If you do not feel confident to install this on your own motor, we highly recommend taking it to a reputable service center to install it for you. \u003c\/p\u003e\n\u003cp\u003eProper installation on these gear box assemblies is the most important thing you can do. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003ePlease click the link below \u003c\/p\u003e\n\u003cp\u003e** \u003ca href=\"https:\/\/www.mpwsr.com\/post\/installation-guide-pa-b-18-b-24-b-31-gear-box-assembly\" target=\"_blank\"\u003eInstalation guide\u003c\/a\u003e ** \u003c\/p\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":48581993005353,"sku":"YGR1125P40","price":1199.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/YGR1125P40-Mounted.webp?v=1747710663"},{"product_id":"pa-gearbox-pump-mounting-bracket-bolts-and-seal-kit","title":"PA gearbox Pump mounting bracket bolts and seal Kit","description":"\u003cp\u003e\u003cspan\u003ePA gearbox Pump mounting bracket bolts and seal Kit Contains 4 mounting plate bolts 4 sealing washers for mounting plate bolts, mounting plate seal and gearbox case seal\u003c\/span\u003e\u003c\/p\u003e\n\u003c!----\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":49081865863465,"sku":"50.9901.99R","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/50.9901.png?v=1760368832"},{"product_id":"ar51974-rtx","title":"AR51974-RTX","description":"\u003cp\u003eAR51974-RTX gearbox for AR RTX pumps 1-1\/8\" motor shaft\u003c\/p\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":49386619044137,"sku":"AR51974-RTX","price":859.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/Logo.webp?v=1727200834"},{"product_id":"oil-seal-for-pa-gear-box","title":"Y10204072 - Oil Seal for PA Gear Box","description":"\u003cp\u003eY10204072 \u003cspan\u003eOil Seal for PA Gear Box\u003c\/span\u003e\u003c\/p\u003e","brand":"MPWSR","offers":[{"title":"Default Title","offer_id":50480733585705,"sku":"Y10204072","price":16.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/files\/gearboxseal.png?v=1749499539"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0861\/6070\/3785\/collections\/background-editor_output_72322fdc-940d-4b2e-89ee-3bcdab88767a.png?v=1769704698","url":"https:\/\/mpwsr.com\/collections\/gear-boxes.oembed?page=2","provider":"MPWSR x APE","version":"1.0","type":"link"}