{"product_id":"pto-clutch-tca21168","title":"TCA21168 PTO Clutch Replacement for John Deere Z510A, Z520A, Z710A | Replaces TCA19812, TCA20655","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThis aftermarket \u003cstrong\u003eTCA21168 electric PTO clutch replacement\u003c\/strong\u003e is built for select \u003cstrong\u003eJohn Deere\u003c\/strong\u003e ZTrak mower applications using the \u003cstrong\u003eTCA21168 \/ TCA20655 \/ TCA19812 \/ Warner 5218-157\u003c\/strong\u003e clutch path.\u003c\/p\u003e\n\u003cp\u003eThis clutch fits select John Deere \u003cstrong\u003eZ510A\u003c\/strong\u003e, \u003cstrong\u003eZ520A\u003c\/strong\u003e, and late \u003cstrong\u003eZ710A\u003c\/strong\u003e applications when the original clutch number and physical specifications match this listing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImportant Z710A serial-number note:\u003c\/strong\u003e This clutch fits John Deere \u003cstrong\u003eZ710A\u003c\/strong\u003e models with serial number \u003cstrong\u003e020001 and higher\u003c\/strong\u003e. If your Z710A serial number is \u003cstrong\u003e020000 or below\u003c\/strong\u003e, do not order this listing without confirming the original clutch number on your mower.\u003c\/p\u003e\n\u003cp\u003eThis replacement is built for compatible John Deere ZTrak applications using a \u003cstrong\u003e1-1\/8 inch crankshaft bore\u003c\/strong\u003e, \u003cstrong\u003e6.3 inch pulley-class PTO clutch\u003c\/strong\u003e, and \u003cstrong\u003eCCW rotation from the pulley side\u003c\/strong\u003e.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAftermarket electric PTO clutch replacement for select John Deere ZTrak applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaces John Deere:\u003c\/strong\u003e TCA21168, TCA20655, TCA19812\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarner reference:\u003c\/strong\u003e 5218-157\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrankshaft Bore:\u003c\/strong\u003e 1-1\/8 inch \/ 1.125 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePulley Diameter:\u003c\/strong\u003e 6.3 inch class \/ approximately 6.29 to 6.375 inches\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 electric PTO clutch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBelt Compatibility:\u003c\/strong\u003e commonly used with 1\/2-inch or 5\/8-inch A\/B belt profiles on supported applications\u003c\/li\u003e\n\u003cli\u003eStandard 2-wire pigtail connector style, verify against product photos\u003c\/li\u003e\n\u003cli\u003eFully assembled replacement clutch unit\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 ZTrak\u003c\/strong\u003e mower applications using the \u003cstrong\u003eTCA21168 \/ Warner 5218-157\u003c\/strong\u003e clutch path. Fitment depends on mower model, serial number, original clutch number, deck configuration, and physical clutch specifications.\u003c\/p\u003e\n\u003ch3\u003eHigh-Confidence John Deere Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eJohn Deere Z510A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eJohn Deere Z520A\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJohn Deere Z710A:\u003c\/strong\u003e serial number 020001 and higher\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eImportant Exclusions\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDo not use for John Deere Z720A:\u003c\/strong\u003e Z720A applications commonly use TCA19813 or TCA21167 depending on serial number.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDo not use for John Deere Z810A, Z820A, Z910A, Z920A, or Z925A:\u003c\/strong\u003e these models commonly use different John Deere clutch paths.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDo not merge with TCA19813 \/ TCA16998:\u003c\/strong\u003e that is a different Warner clutch path commonly associated with 5218-245.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDo not merge with TCA21167:\u003c\/strong\u003e that is a different late-model commercial ZTrak clutch path commonly associated with Warner 5218-271.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDo not merge with TCA16997 or Cub Cadet 917-05184:\u003c\/strong\u003e those listings may use a much larger pulley path and are not safe substitutes for TCA21168.\u003c\/li\u003e\n\u003c\/ul\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 TCA21168, TCA20655, TCA19812\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSupersession note:\u003c\/strong\u003e TCA21168 is commonly used as the replacement path for TCA20655 and TCA19812 on compatible John Deere ZTrak applications.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eCross-Reference Aftermarket Numbers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarner:\u003c\/strong\u003e 5218-157\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eXtreme:\u003c\/strong\u003e X0223\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStens:\u003c\/strong\u003e 255-039X\u003c\/li\u003e\n\u003c\/ul\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\u003eIntegrated pulley\u003c\/li\u003e\n\u003cli\u003eElectromagnetic clutch coil\u003c\/li\u003e\n\u003cli\u003ePre-installed bearing assembly\u003c\/li\u003e\n\u003cli\u003e2-wire pigtail connector style, 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 mower model and serial number before ordering\u003c\/li\u003e\n\u003cli\u003eMatch the original clutch number to TCA21168, TCA20655, TCA19812, or Warner 5218-157\u003c\/li\u003e\n\u003cli\u003eInspect the anti-rotation bracket or frame stop before installation\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\u003e\u003cstrong\u003eRemoval warning:\u003c\/strong\u003e If the old clutch will not slide off the crankshaft, do not hammer or pry aggressively against the clutch body. Use 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.\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\u003eOEM-spec \u003ca href=\"\/pages\/fitment-guarantee\"\u003e\u003cstrong\u003efitment guarantee\u003c\/strong\u003e\u003c\/a\u003e\n\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\u003eWhat does TCA21168 replace?\u003c\/h3\u003e\n\u003cp\u003eThis aftermarket replacement PTO clutch replaces John Deere \u003cstrong\u003eTCA21168\u003c\/strong\u003e, \u003cstrong\u003eTCA20655\u003c\/strong\u003e, and \u003cstrong\u003eTCA19812\u003c\/strong\u003e. It also cross-references Warner \u003cstrong\u003e5218-157\u003c\/strong\u003e, Xtreme X0223, and Stens 255-039X.\u003c\/p\u003e\n\u003ch3\u003eDoes TCA21168 fit John Deere Z710A?\u003c\/h3\u003e\n\u003cp\u003eYes, this clutch fits John Deere Z710A mowers with serial number \u003cstrong\u003e020001 and higher\u003c\/strong\u003e. If your Z710A serial number is \u003cstrong\u003e020000 or below\u003c\/strong\u003e, confirm the original clutch number before ordering because earlier machines may use a different clutch path.\u003c\/p\u003e\n\u003ch3\u003eDoes this clutch fit John Deere Z510A or Z520A?\u003c\/h3\u003e\n\u003cp\u003eThis clutch fits select John Deere Z510A and Z520A ZTrak Estate applications using the \u003cstrong\u003eTCA21168 \/ TCA19812 \/ Warner 5218-157\u003c\/strong\u003e clutch path. Match the original clutch number and physical specifications before ordering.\u003c\/p\u003e\n\u003ch3\u003eIs TCA21168 the same as TCA21167?\u003c\/h3\u003e\n\u003cp\u003eNo. TCA21168 and TCA21167 are different John Deere PTO clutch paths. Do not use this listing for TCA21167 applications.\u003c\/p\u003e\n\u003ch3\u003eIs TCA21168 the same as TCA19813?\u003c\/h3\u003e\n\u003cp\u003eNo. TCA21168 and TCA19813 are different clutch paths. TCA19813 commonly cross-references Warner 5218-245 and fits different John Deere ZTrak applications.\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 crankshaft bore\u003c\/strong\u003e. It will not fit a 1-inch crankshaft.\u003c\/p\u003e\n\u003ch3\u003eWhat pulley size does this PTO clutch use?\u003c\/h3\u003e\n\u003cp\u003eThis clutch uses a \u003cstrong\u003e6.3 inch pulley-class\u003c\/strong\u003e design, commonly listed around 6.29 to 6.375 inches depending on measurement method.\u003c\/p\u003e\n\u003ch3\u003eWhat should I check before ordering?\u003c\/h3\u003e\n\u003cp\u003eConfirm the original clutch number, mower model, serial number, crankshaft bore, pulley diameter, connector style, belt routing, and anti-rotation setup before ordering.\u003c\/p\u003e\n\u003ch3\u003eCan PTO Direct USA help 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, OEM clutch number, and clear photos of the old clutch. Include photos of the clutch label or stamped number, wiring connector, pulley, anti-rotation bracket, and deck belt routing.\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eNeed a different John Deere clutch?\u003c\/strong\u003e 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":52974133248367,"sku":"PTO-TCA21168","price":159.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0957\/5058\/6735\/files\/TCA21168-pto-clutch-main.jpg?v=1779340814","url":"https:\/\/ptodirectusa.com\/products\/pto-clutch-tca21168","provider":"PTO Direct USA","version":"1.0","type":"link"}