{"product_id":"pto-clutch-am131779","title":"AM131779 PTO Clutch Replacement for John Deere 325, 335, 345, GX335, GX345, GX355 | Ogura MA-GT-JD23BF","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThis \u003cstrong\u003eAM131779 PTO clutch replacement\u003c\/strong\u003e is an aftermarket electric PTO clutch for select \u003cstrong\u003eJohn Deere\u003c\/strong\u003e lawn and garden tractor applications, including \u003cstrong\u003eJohn Deere 325, 335, 345, GX335, GX345\u003c\/strong\u003e, and select \u003cstrong\u003eGX355\u003c\/strong\u003e models. It replaces \u003cstrong\u003eJohn Deere AM131779\u003c\/strong\u003e and \u003cstrong\u003eAM126102\u003c\/strong\u003e, and cross-references \u003cstrong\u003eOgura MA-GT-JD23BF\u003c\/strong\u003e, \u003cstrong\u003eOgura MA-GT-JD23\u003c\/strong\u003e, \u003cstrong\u003eStens 255-831X\u003c\/strong\u003e, and \u003cstrong\u003eRotary 15779\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eBuilt with a \u003cstrong\u003e1-1\/8 inch crankshaft bore\u003c\/strong\u003e, \u003cstrong\u003e5-5\/16 inch pulley diameter\u003c\/strong\u003e, \u003cstrong\u003ecounter-clockwise rotation\u003c\/strong\u003e, and pulley compatibility for \u003cstrong\u003e1\/2 inch or 5\/8 inch belts\u003c\/strong\u003e, this clutch is designed to restore reliable mower deck blade engagement when matched to the correct tractor, serial range, and original clutch number.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImportant fitment warning:\u003c\/strong\u003e Serial number and crankshaft bore matter on these John Deere platforms. Many \u003cstrong\u003eGX335\u003c\/strong\u003e and \u003cstrong\u003eGX345\u003c\/strong\u003e applications use this clutch only through serial number \u003cstrong\u003e120,000\u003c\/strong\u003e. Later tractors may use a different 1-inch bore clutch. For \u003cstrong\u003eGX355\u003c\/strong\u003e models, verify the original clutch number or measure the crankshaft bore before ordering.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAftermarket electric PTO clutch replacement for listed John Deere lawn and garden tractors\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrankshaft Bore:\u003c\/strong\u003e 1-1\/8\" \/ 1.125\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePulley Diameter:\u003c\/strong\u003e 5-5\/16\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBelt Width:\u003c\/strong\u003e accepts 1\/2\" or 5\/8\" belt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotation:\u003c\/strong\u003e CCW from pulley side\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 12V DC\u003c\/li\u003e\n\u003cli\u003eIntegrated brake assembly for controlled blade stopping\u003c\/li\u003e\n\u003cli\u003eFully assembled and ready to install\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eCompatible Brands \u0026amp; Models\u003c\/h2\u003e\n\u003cp\u003eThis PTO clutch fits select \u003cstrong\u003eJohn Deere 300 Series\u003c\/strong\u003e and \u003cstrong\u003eGX Series\u003c\/strong\u003e lawn and garden tractors. Fitment depends on serial number, original clutch number, and crankshaft bore.\u003c\/p\u003e\n\u003ch3\u003eJohn Deere Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eJohn Deere 325:\u003c\/strong\u003e verify original clutch number before ordering\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJohn Deere 335:\u003c\/strong\u003e AM131779 clutch applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJohn Deere 345:\u003c\/strong\u003e serial number 070,001 and higher\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJohn Deere GX335:\u003c\/strong\u003e serial number 120,000 and lower\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJohn Deere GX345:\u003c\/strong\u003e serial number 120,000 and lower\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJohn Deere GX355:\u003c\/strong\u003e verify serial range, original clutch number, and 1-1\/8 inch crankshaft bore before ordering\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSerial number note:\u003c\/strong\u003e Do not choose this clutch by model number alone. If your original clutch is marked \u003cstrong\u003eAM131779\u003c\/strong\u003e, \u003cstrong\u003eAM126102\u003c\/strong\u003e, \u003cstrong\u003eMA-GT-JD23BF\u003c\/strong\u003e, or \u003cstrong\u003eMA-GT-JD23\u003c\/strong\u003e, this is the correct replacement path. If your tractor has a \u003cstrong\u003e1-inch crankshaft\u003c\/strong\u003e, this 1-1\/8 inch bore clutch is not correct.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eReplaces OEM Part Numbers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eJohn Deere:\u003c\/strong\u003e AM131779\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJohn Deere:\u003c\/strong\u003e AM126102\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFitment note:\u003c\/strong\u003e AM131779 is commonly used as the replacement path for AM126102 on compatible John Deere applications. Always confirm by the original clutch number, tractor serial number, and crankshaft bore.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eCross-Reference Aftermarket Numbers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOgura:\u003c\/strong\u003e MA-GT-JD23BF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOgura:\u003c\/strong\u003e MA-GT-JD23\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStens:\u003c\/strong\u003e 255-831X\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotary:\u003c\/strong\u003e 15779\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSearch note:\u003c\/strong\u003e Ogura numbers may also appear without hyphens, such as \u003cstrong\u003eMAGTJD23BF\u003c\/strong\u003e or \u003cstrong\u003eMAGTJD23\u003c\/strong\u003e. Match the original clutch number, bore size, pulley diameter, belt width, rotation, and connector style before ordering.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eComplete electric PTO clutch assembly\u003c\/li\u003e\n\u003cli\u003eFactory-balanced 5-5\/16\" pulley\u003c\/li\u003e\n\u003cli\u003ePre-installed bearing assembly\u003c\/li\u003e\n\u003cli\u003eEncapsulated electromagnetic coil\u003c\/li\u003e\n\u003cli\u003eIntegrated brake assembly\u003c\/li\u003e\n\u003cli\u003eWiring lead and connector as shown in product photos\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eBefore Installing\u003c\/h2\u003e\n\u003cp\u003eBefore installing a new PTO clutch, inspect the mower deck drive system and clutch mounting area. A new clutch can fail early if the belt is misrouted, an idler is seized, a spindle is dragging, or the anti-rotation bracket is damaged.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eConfirm your tractor model and serial number before ordering\u003c\/li\u003e\n\u003cli\u003eMatch the original clutch number to AM131779, AM126102, MA-GT-JD23BF, or MA-GT-JD23\u003c\/li\u003e\n\u003cli\u003eMeasure the crankshaft if your GX-series serial number is near a known cutoff\u003c\/li\u003e\n\u003cli\u003eCheck the deck belt for glazing, cracking, oil contamination, or stretch\u003c\/li\u003e\n\u003cli\u003eConfirm belt routing around the clutch pulley, idlers, and spindle pulleys\u003c\/li\u003e\n\u003cli\u003eInspect idler pulleys and blade spindles for drag, wobble, or bearing noise\u003c\/li\u003e\n\u003cli\u003eCheck the wiring connector for corrosion, melting, loose terminals, or damage\u003c\/li\u003e\n\u003cli\u003eMake sure the crankshaft is clean and free of rust, burrs, or keyway damage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf the old clutch will not slide off the crankshaft, do not pry against the pulley or hammer. See the \u003ca href=\"\/blogs\/troubleshooting\/pto-clutch-stuck-on-crankshaft\"\u003e\u003cstrong\u003ePTO clutch stuck on crankshaft guide\u003c\/strong\u003e\u003c\/a\u003e before removal turns into crankshaft damage.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhy Buy From PTO Direct USA?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFast USA shipping\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/pages\/fitment-guarantee\" title=\"Fitment Guarantee Explained\"\u003eFitment guarantee\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e1-year warranty\u003c\/li\u003e\n\u003cli\u003eFitment-first product support\u003c\/li\u003e\n\u003cli\u003eClear product images for easier clutch identification\u003c\/li\u003e\n\u003cli\u003eTrusted replacement supplier for homeowners, repair shops, and mower service professionals\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003ch3\u003eDoes AM131779 fit a John Deere GX345?\u003c\/h3\u003e\n\u003cp\u003eYes, this clutch fits many \u003cstrong\u003eJohn Deere GX345\u003c\/strong\u003e tractors through serial number \u003cstrong\u003e120,000\u003c\/strong\u003e. If your GX345 is serial number \u003cstrong\u003e120,001 or higher\u003c\/strong\u003e, verify the crankshaft bore and original clutch number before ordering because later units may use a different 1-inch bore clutch.\u003c\/p\u003e\n\u003ch3\u003eDoes AM131779 fit a John Deere 345?\u003c\/h3\u003e\n\u003cp\u003eThis clutch is commonly listed for \u003cstrong\u003eJohn Deere 345\u003c\/strong\u003e tractors with serial number \u003cstrong\u003e070,001 and higher\u003c\/strong\u003e. Early 345 models may use a different PTO clutch, so check the tractor serial number and original clutch label before ordering.\u003c\/p\u003e\n\u003ch3\u003eDoes AM131779 fit a John Deere GX355?\u003c\/h3\u003e\n\u003cp\u003eSome GX355 applications are associated with the AM131779 clutch family, but GX355 serial ranges can be inconsistent across catalogs. GX355 owners should verify the original clutch number or confirm a \u003cstrong\u003e1-1\/8 inch crankshaft bore\u003c\/strong\u003e before ordering.\u003c\/p\u003e\n\u003ch3\u003eDoes AM131779 replace AM126102?\u003c\/h3\u003e\n\u003cp\u003eYes. \u003cstrong\u003eAM131779\u003c\/strong\u003e is commonly used as the replacement path for \u003cstrong\u003eAM126102\u003c\/strong\u003e on compatible John Deere applications.\u003c\/p\u003e\n\u003ch3\u003eIs Ogura MA-GT-JD23BF the same fitment as AM131779?\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eOgura MA-GT-JD23BF\u003c\/strong\u003e is the Ogura reference commonly associated with the John Deere \u003cstrong\u003eAM131779\u003c\/strong\u003e clutch family. You may also see it listed as \u003cstrong\u003eMA-GT-JD23\u003c\/strong\u003e, \u003cstrong\u003eMAGTJD23BF\u003c\/strong\u003e, or \u003cstrong\u003eMAGTJD23\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhat bore size does this PTO clutch use?\u003c\/h3\u003e\n\u003cp\u003eThis clutch uses a \u003cstrong\u003e1-1\/8 inch bore\u003c\/strong\u003e, also written as \u003cstrong\u003e1.125\"\u003c\/strong\u003e. If your tractor has a 1-inch crankshaft, this clutch is not correct.\u003c\/p\u003e\n\u003ch3\u003eWhat belt width does this clutch use?\u003c\/h3\u003e\n\u003cp\u003eThis clutch pulley is commonly listed for \u003cstrong\u003e1\/2 inch\u003c\/strong\u003e or \u003cstrong\u003e5\/8 inch\u003c\/strong\u003e belt applications. Confirm your deck belt and original pulley style before ordering.\u003c\/p\u003e\n\u003ch3\u003eWhat are common signs of a failing PTO clutch?\u003c\/h3\u003e\n\u003cp\u003eCommon symptoms include mower blades not engaging, the PTO clutch clicking but the blades not spinning, slipping under load, intermittent blade engagement, or blades slowing down after the mower heats up. A worn coil can work cold, then weaken after 10 to 30 minutes of mowing.\u003c\/p\u003e\n\u003ch3\u003eCan PTO Direct USA help me confirm fitment?\u003c\/h3\u003e\n\u003cp\u003eYes. Email \u003cstrong\u003esupport@ptodirectusa.com\u003c\/strong\u003e with your mower model number, serial number, deck size, original clutch number, and clear photos of the old clutch. For the best fitment help, include photos of the clutch label or stamped number, wiring connector, pulley, anti-rotation bracket, and crankshaft area.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003eNeed installation help? Read the \u003ca href=\"\/blogs\/pto-clutch-guides\/pto-clutch-installation\"\u003e\u003cstrong\u003ePTO clutch installation guide\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eNeed a different John Deere clutch? Browse the \u003ca href=\"\/collections\/john-deere-pto-clutches\"\u003e\u003cstrong\u003eJohn Deere PTO clutch collection\u003c\/strong\u003e\u003c\/a\u003e or the full \u003ca href=\"\/collections\/pto-clutches\"\u003e\u003cstrong\u003eelectric PTO clutch catalog\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\u003e","brand":"PTO Direct USA","offers":[{"title":"Default Title","offer_id":52921595429231,"sku":"PTO-AM131779","price":169.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0957\/5058\/6735\/files\/am131779-pto-clutch-main-real.jpg?v=1780036444","url":"https:\/\/ptodirectusa.com\/products\/pto-clutch-am131779","provider":"PTO Direct USA","version":"1.0","type":"link"}