{"product_id":"pto-clutch-00447100","title":"00447100 PTO Clutch for Gravely Pro-Turn \u0026 Pro-Master | Ogura GT3.5-VP01R","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThis aftermarket \u003cstrong\u003e00447100 electric PTO clutch\u003c\/strong\u003e is a replacement for select \u003cstrong\u003eGravely\u003c\/strong\u003e and \u003cstrong\u003eAriens\u003c\/strong\u003e commercial mower applications using the \u003cstrong\u003e00447100\u003c\/strong\u003e or \u003cstrong\u003eOgura GT3.5-VP01R\u003c\/strong\u003e clutch path.\u003c\/p\u003e\n\u003cp\u003eThis clutch uses a \u003cstrong\u003e1-1\/8-inch crankshaft bore\u003c\/strong\u003e, approximately \u003cstrong\u003e6-7\/16-inch pulley\u003c\/strong\u003e, and \u003cstrong\u003eCCW rotation from the pulley side\u003c\/strong\u003e. It is designed as a complete assembled electric PTO clutch commonly used on Gravely Pro-Turn and Pro-Master platforms.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFitment note:\u003c\/strong\u003e Gravely and Ariens model-family names cover multiple engines, deck sizes, and clutch paths. Confirm that the original clutch or model-specific parts manual identifies 00447100 or GT3.5-VP01R before ordering.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAftermarket electric PTO clutch assembly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary OEM Part Number:\u003c\/strong\u003e 00447100\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlso Listed As:\u003c\/strong\u003e 447100\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOgura Cross-Reference:\u003c\/strong\u003e GT3.5-VP01R\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 approximately 6-7\/16 inch (6.45 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotation:\u003c\/strong\u003e CCW from pulley side\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBelt Compatibility:\u003c\/strong\u003e 1\/2-inch or 5\/8-inch V-belt on supported applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 12 VDC\u003c\/li\u003e\n\u003cli\u003eComplete assembled replacement clutch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eCompatible Brands \u0026amp; Model Series\u003c\/h2\u003e\n\u003cp\u003eThis PTO clutch is intended for select \u003cstrong\u003eGravely\u003c\/strong\u003e and \u003cstrong\u003eAriens\u003c\/strong\u003e commercial mower configurations using the confirmed \u003cstrong\u003e00447100 \/ Ogura GT3.5-VP01R\u003c\/strong\u003e clutch path.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGravely Pro-Turn:\u003c\/strong\u003e select applications using 00447100\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGravely Pro-Master:\u003c\/strong\u003e select applications using 00447100\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAriens:\u003c\/strong\u003e select commercial platforms that share the same 00447100 \/ GT3.5-VP01R path\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eModel-family warning:\u003c\/strong\u003e Pro-Turn, Pro-Master, and related Gravely \/ Ariens family names cover multiple clutch configurations. Do not order from the mower-family name, engine, or deck size alone. Confirm part number with a model specific parts diagram.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eReplaces OEM Part Numbers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGravely:\u003c\/strong\u003e 00447100, 447100\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAriens:\u003c\/strong\u003e 00447100\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eAftermarket Cross-Reference Numbers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOgura:\u003c\/strong\u003e GT3.5-VP01R\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eXtreme:\u003c\/strong\u003e X0667 (common aftermarket path)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotary:\u003c\/strong\u003e 15776\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eCommon Symptoms of a Failing PTO Clutch\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBlades will not engage when the PTO switch is activated\u003c\/li\u003e\n\u003cli\u003eThe clutch clicks but the deck belt does not begin turning\u003c\/li\u003e\n\u003cli\u003eBlades engage when cold but stop after the clutch heats up\u003c\/li\u003e\n\u003cli\u003eThe clutch slips during heavy or wet cutting conditions\u003c\/li\u003e\n\u003cli\u003eThe deck belt squeals, smokes, or overheats during engagement\u003c\/li\u003e\n\u003cli\u003eBurning smell near the engine crankshaft or clutch\u003c\/li\u003e\n\u003cli\u003eGrinding, rumbling, or excessive pulley-bearing noise\u003c\/li\u003e\n\u003cli\u003eIntermittent blade engagement under load\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 complete aftermarket electric PTO clutch assembly\u003c\/li\u003e\n\u003cli\u003eIntegrated approximately 6-7\/16-inch pulley\u003c\/li\u003e\n\u003cli\u003eIntegrated electromagnetic coil and brake assembly\u003c\/li\u003e\n\u003cli\u003eClutch-side electrical connection as pictured\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eIncluded-item warning:\u003c\/strong\u003e Do not assume the mower-side harness, crankshaft bolt, key, washer, spacer, clutch anchor, or anti-rotation bracket is included unless clearly shown in the product photos.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhy Buy From PTO Direct USA?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePart-number-first PTO clutch listings\u003c\/li\u003e\n\u003cli\u003eClear aftermarket cross-reference distinctions\u003c\/li\u003e\n\u003cli\u003eFitment-focused product descriptions\u003c\/li\u003e\n\u003cli\u003eFast USA shipping\u003c\/li\u003e\n\u003cli\u003e1-year warranty\u003c\/li\u003e\n\u003cli\u003eSupport for mower owners, repair shops, and commercial operators\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eNeed Help Confirming Fitment?\u003c\/h2\u003e\n\u003cp\u003eSend \u003ca href=\"\/pages\/contact\"\u003e\u003cstrong\u003ePTO Direct USA\u003c\/strong\u003e\u003c\/a\u003e the complete Gravely or Ariens model number, serial number, deck size, engine model, and original PTO clutch number before ordering.\u003c\/p\u003e\n\u003cp\u003eFor the best fitment help, include clear photos of the mower identification tag, original clutch label or stamped number, pulley, electrical connector, and anti-rotation setup.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003ch3\u003eWhat PTO clutch replaces Gravely 00447100?\u003c\/h3\u003e\n\u003cp\u003eThis aftermarket electric PTO clutch replaces \u003cstrong\u003eGravely \/ Ariens 00447100\u003c\/strong\u003e on compatible applications. The matching Ogura number is \u003cstrong\u003eGT3.5-VP01R\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eDoes this replace Ogura GT3.5-VP01R?\u003c\/h3\u003e\n\u003cp\u003eYes. This listing is built for the GT3.5-VP01R clutch path when the original clutch number and physical specifications match.\u003c\/p\u003e\n\u003ch3\u003eWhat are the main specifications for this clutch path?\u003c\/h3\u003e\n\u003cp\u003e1-1\/8-inch crankshaft bore, approximately 6-7\/16-inch pulley, CCW rotation from the pulley side, and compatibility with 1\/2-inch or 5\/8-inch V-belt applications on the supported path.\u003c\/p\u003e\n\u003ch3\u003eDoes this fit Gravely Pro-Turn or Pro-Master mowers?\u003c\/h3\u003e\n\u003cp\u003eIt fits select Pro-Turn and Pro-Master applications that use the confirmed 00447100 \/ GT3.5-VP01R path. Confirm the complete model number and original clutch number before ordering.\u003c\/p\u003e\n\u003ch3\u003eCan I order this clutch by model name or deck size alone?\u003c\/h3\u003e\n\u003cp\u003eNo. Match the original clutch number or the exact model-specific parts diagram first, then confirm bore, pulley diameter, rotation, and connector style.\u003c\/p\u003e\n\u003ch3\u003eIs the mounting hardware or wiring harness included?\u003c\/h3\u003e\n\u003cp\u003eDo not assume the crankshaft bolt, key, washer, spacer, anti-rotation bracket, or mower-side harness is included unless clearly shown in the current product listing.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eRelated PTO Clutches \u0026amp; Resources\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/pages\/pto-clutch-fitment-guide\"\u003eHow to Identify the Correct PTO Clutch\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/pto-clutches\"\u003eBrowse the Full Electric PTO Clutch Catalog\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HD Switch","offers":[{"title":"Default Title","offer_id":53265489265007,"sku":"PTO-00447100","price":187.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0957\/5058\/6735\/files\/00447100-pto-clutch.jpg?v=1785824373","url":"https:\/\/ptodirectusa.com\/products\/pto-clutch-00447100","provider":"PTO Direct USA","version":"1.0","type":"link"}