{"product_id":"deck-belt-m154897","title":"M154897 \/ M172924 Primary Deck Belt for John Deere X300 X320 X500 | 66.5 Inch","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThis aftermarket \u003cstrong\u003eM154897 \/ M172924 primary mower deck belt\u003c\/strong\u003e fits select John Deere X300-Series and X500-Series mower-deck applications using the listed replacement belt-number path.\u003c\/p\u003e\n\u003cp\u003eThe supplier lists this polyester replacement belt at approximately \u003cstrong\u003e5\/8 inch wide by 66.5 inches long\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eOn compatible two-belt mower decks, M154897 \/ M172924 is commonly used as the \u003cstrong\u003eprimary belt\u003c\/strong\u003e that transfers power from the engine-mounted PTO clutch to the mower deck. A separate secondary belt may drive the spindle-pulley system.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAftermarket primary mower-deck drive belt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Replacement Number:\u003c\/strong\u003e M154897\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdditional Replacement Number:\u003c\/strong\u003e M172924\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupplier Reference:\u003c\/strong\u003e BT447A1001HH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupplier-Listed Width:\u003c\/strong\u003e Approximately 5\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupplier-Listed Length:\u003c\/strong\u003e Approximately 66.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupplier Metric Length:\u003c\/strong\u003e 1689.1 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupplier-Listed Thickness:\u003c\/strong\u003e 14.5 mm \/ approximately 0.57 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Polyester\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity Included:\u003c\/strong\u003e One belt\u003c\/li\u003e\n\u003cli\u003eUsed on select 42-inch, 42M, 48-inch, and 54-inch mower-deck configurations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eReplaces These Belt Numbers\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eM154897\u003c\/li\u003e\n\u003cli\u003eM172924\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSupplier Reference Number\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBT447A1001HH\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSearch-Friendly Number Formats\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eM154897\u003c\/li\u003e\n\u003cli\u003e154897\u003c\/li\u003e\n\u003cli\u003eM172924\u003c\/li\u003e\n\u003cli\u003e172924\u003c\/li\u003e\n\u003cli\u003eBT447A1001HH\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eBelt Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComponent:\u003c\/strong\u003e Primary mower-deck drive belt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupplier-Listed Length:\u003c\/strong\u003e 66.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupplier Metric Length:\u003c\/strong\u003e 1689.1 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupplier-Listed Width:\u003c\/strong\u003e 5\/8 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupplier-Listed Thickness:\u003c\/strong\u003e 14.5 mm \/ approximately 0.57 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Polyester\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e One belt\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003ePublished belt measurements can vary depending on the measurement method. Use the original \u003cstrong\u003eM154897 or M172924\u003c\/strong\u003e part number as the primary fitment check rather than relying on a tape measurement alone.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eCompatible John Deere Model Families\u003c\/h2\u003e\n\u003cp\u003eThe supplier associates the M154897 \/ M172924 belt path with select mower-deck configurations in the following John Deere model families.\u003c\/p\u003e\n\u003ch3\u003eJohn Deere X300 Series\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eX300\u003c\/li\u003e\n\u003cli\u003eX304\u003c\/li\u003e\n\u003cli\u003eX310\u003c\/li\u003e\n\u003cli\u003eX320\u003c\/li\u003e\n\u003cli\u003eX340\u003c\/li\u003e\n\u003cli\u003eX360\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eJohn Deere X500 Series\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eX500\u003c\/li\u003e\n\u003cli\u003eX520\u003c\/li\u003e\n\u003cli\u003eX530\u003c\/li\u003e\n\u003cli\u003eX534\u003c\/li\u003e\n\u003cli\u003eX540\u003c\/li\u003e\n\u003cli\u003eX590\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFitment note:\u003c\/strong\u003e These are supplier-provided model-family examples. This belt fits only the specific deck sizes, serial ranges, and belt-routing configurations that use M154897 or M172924.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eCompatible Deck Paths\u003c\/h2\u003e\n\u003cp\u003eThe supplier fitment data includes selected applications using:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e42-inch mower decks\u003c\/li\u003e\n\u003cli\u003e42M dedicated mulching decks\u003c\/li\u003e\n\u003cli\u003e48-inch mower decks\u003c\/li\u003e\n\u003cli\u003e54-inch mower decks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe same tractor model may have been sold with more than one mower-deck configuration. Deck width alone does not confirm belt fitment.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003ePrimary Belt Position\u003c\/h2\u003e\n\u003cp\u003eMany compatible John Deere three-spindle mower decks use two separate belts:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe \u003cstrong\u003eprimary belt\u003c\/strong\u003e transfers power from the electric PTO clutch to the mower deck.\u003c\/li\u003e\n\u003cli\u003eThe \u003cstrong\u003esecondary belt\u003c\/strong\u003e routes through the spindle and idler pulleys to turn the mower blades.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eM154897 \/ M172924 is commonly used in the \u003cstrong\u003eprimary clutch-to-deck position\u003c\/strong\u003e on compatible two-belt mower decks.\u003c\/p\u003e\n\u003cp\u003eThis listing includes the M154897 \/ M172924 belt only. It does not include a secondary spindle-drive belt.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eJohn Deere X300, X304 and X310 Fitment Note\u003c\/h2\u003e\n\u003cp\u003eThe supplier associates M154897 \/ M172924 with select mower-deck configurations on the John Deere X300, X304, and X310.\u003c\/p\u003e\n\u003cp\u003eThese tractors can use different belts depending on the installed 42-inch, 42M, or other compatible mower deck. Confirm that the original primary belt is marked \u003cstrong\u003eM154897 or M172924\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eDo not substitute this belt for M154621 or another long spindle-drive belt simply because the tractor belongs to the X300 Series.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eJohn Deere X320 Fitment Note\u003c\/h2\u003e\n\u003cp\u003eThe M154897 \/ M172924 belt is used as the primary deck-drive belt on select John Deere X320 mower-deck configurations.\u003c\/p\u003e\n\u003cp\u003eOn a compatible 48X two-belt deck, the mower may use:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eM154897 \/ M172924:\u003c\/strong\u003e Primary PTO-clutch-to-deck belt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM154958:\u003c\/strong\u003e Separate secondary spindle-drive belt\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOn a compatible 54X deck, M154897 \/ M172924 can also be used in the primary position with a different secondary belt.\u003c\/p\u003e\n\u003cp\u003eConfirm the installed deck, gauge-wheel configuration, original belt numbers, and routing before ordering.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eJohn Deere X340 and X360 Fitment Note\u003c\/h2\u003e\n\u003cp\u003eThe supplier associates this belt with select 42-inch, 48-inch, and 54-inch deck configurations used on the John Deere X340 and X360.\u003c\/p\u003e\n\u003cp\u003eProduction and serial changes can affect the complete deck-belt path. Match the original M154897 or M172924 number instead of relying only on the tractor model and deck width.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eJohn Deere X500-Series Fitment Note\u003c\/h2\u003e\n\u003cp\u003eThe supplier associates M154897 \/ M172924 with select mower-deck configurations on the following tractors:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eX500\u003c\/li\u003e\n\u003cli\u003eX520\u003c\/li\u003e\n\u003cli\u003eX530\u003c\/li\u003e\n\u003cli\u003eX534\u003c\/li\u003e\n\u003cli\u003eX540\u003c\/li\u003e\n\u003cli\u003eX590\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese tractors were offered with multiple 48-inch and 54-inch mower-deck configurations. Some use separate primary and secondary belts, and serial-number changes may affect the complete belt path.\u003c\/p\u003e\n\u003cp\u003eConfirm that the belt being replaced is the short primary deck-drive belt and that the original number matches M154897 or M172924.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eBefore Ordering\u003c\/h2\u003e\n\u003cp\u003eConfirm all of the following before ordering:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe original belt number is \u003cstrong\u003eM154897 or M172924\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003eThe mower is equipped with a compatible John Deere mower deck.\u003c\/li\u003e\n\u003cli\u003eThe required belt is the primary mower-deck drive belt.\u003c\/li\u003e\n\u003cli\u003eThe supplier-listed size of approximately 5\/8 inch by 66.5 inches matches the required belt path.\u003c\/li\u003e\n\u003cli\u003eThe belt is not being confused with the longer secondary spindle-drive belt.\u003c\/li\u003e\n\u003cli\u003eThe belt is not the tractor traction-drive belt.\u003c\/li\u003e\n\u003cli\u003eThe installed deck size and belt-routing configuration match the original setup.\u003c\/li\u003e\n\u003cli\u003eAny applicable mower or deck serial range has been checked.\u003c\/li\u003e\n\u003cli\u003eThe PTO clutch pulley, deck input pulley, idlers, tension spring, and belt guides are in usable condition.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDo not install the belt until the replacement number, belt position, dimensions, and pulley routing have been confirmed.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eCommon Symptoms of a Worn Primary Deck Belt\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePTO clutch engages but the mower-deck input pulley does not turn\u003c\/li\u003e\n\u003cli\u003eSecondary belt and blades turn slowly under mowing load\u003c\/li\u003e\n\u003cli\u003eBelt squeals when the PTO clutch is activated\u003c\/li\u003e\n\u003cli\u003eBelt slips between the PTO clutch and mower deck\u003c\/li\u003e\n\u003cli\u003eVisible cracking, glazing, fraying, or burned belt surfaces\u003c\/li\u003e\n\u003cli\u003eBelt repeatedly jumps off the clutch or deck input pulley\u003c\/li\u003e\n\u003cli\u003eBurning-rubber smell near the engine or front of the mower deck\u003c\/li\u003e\n\u003cli\u003eIntermittent blade engagement even though the PTO clutch operates\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eInstallation Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePark the tractor on a level surface and remove the ignition key.\u003c\/li\u003e\n\u003cli\u003eDisconnect the spark-plug leads before working near the PTO clutch or mower deck.\u003c\/li\u003e\n\u003cli\u003ePhotograph or sketch the existing belt routing before removal.\u003c\/li\u003e\n\u003cli\u003eIdentify the primary and secondary deck belts before disassembly.\u003c\/li\u003e\n\u003cli\u003eInspect the PTO clutch pulley and deck input pulley for wear or damage.\u003c\/li\u003e\n\u003cli\u003eInspect the idler pulleys, tension spring, tension arm, and belt guides.\u003c\/li\u003e\n\u003cli\u003eConfirm the V-shaped side and flat side of the belt contact the correct pulleys.\u003c\/li\u003e\n\u003cli\u003eMake sure the replacement belt is fully seated in every pulley groove.\u003c\/li\u003e\n\u003cli\u003eRotate the deck pulley system manually before starting the engine.\u003c\/li\u003e\n\u003cli\u003eReplace seized pulleys or damaged tension components before operating the new belt.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eQuick Ship Fulfillment\u003c\/h2\u003e\n\u003cp\u003eThis item may ship directly from one of our trusted U.S. distribution partners to help reduce transit time. Packaging, labeling, or warehouse origin may vary, but the part will match the replacement numbers, fitment notes, and supplier specifications shown in this listing.\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 listings to help reduce fitment mistakes\u003c\/li\u003e\n\u003cli\u003eFocused mower-deck and PTO replacement parts\u003c\/li\u003e\n\u003cli\u003eClear primary and secondary belt-position notes\u003c\/li\u003e\n\u003cli\u003ePractical support when you need help checking compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003ch3\u003eWhat does the M154897 belt replace?\u003c\/h3\u003e\n\u003cp\u003eThe supplier cross-references this aftermarket belt to John Deere numbers \u003cstrong\u003eM154897 and M172924\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs M154897 the same replacement path as M172924?\u003c\/h3\u003e\n\u003cp\u003eYes. This supplier belt is listed as a replacement for both M154897 and M172924 when the mower-deck configuration and dimensions match.\u003c\/p\u003e\n\u003ch3\u003eHow long is the supplier-listed M154897 belt?\u003c\/h3\u003e\n\u003cp\u003eThe supplier lists the belt at approximately \u003cstrong\u003e66.5 inches long\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eHow wide is the supplier-listed M154897 belt?\u003c\/h3\u003e\n\u003cp\u003eThe supplier lists the belt at approximately \u003cstrong\u003e5\/8 inch wide\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhat material is the belt made from?\u003c\/h3\u003e\n\u003cp\u003eThe supplier describes the replacement belt as being made from polyester.\u003c\/p\u003e\n\u003ch3\u003eHow many belts are included?\u003c\/h3\u003e\n\u003cp\u003eThis listing includes \u003cstrong\u003eone M154897 \/ M172924 belt\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eIs M154897 a primary or secondary deck belt?\u003c\/h3\u003e\n\u003cp\u003eOn many compatible two-belt John Deere mower decks, M154897 \/ M172924 is used as the \u003cstrong\u003eprimary belt\u003c\/strong\u003e between the PTO clutch and mower deck.\u003c\/p\u003e\n\u003ch3\u003eDoes this listing include the secondary deck belt?\u003c\/h3\u003e\n\u003cp\u003eNo. This listing includes the M154897 \/ M172924 primary belt only. A separate secondary spindle-drive belt may be required.\u003c\/p\u003e\n\u003ch3\u003eDoes M154897 fit the John Deere X300?\u003c\/h3\u003e\n\u003cp\u003eThe supplier associates this belt with select X300 mower-deck configurations. Confirm the original M154897 or M172924 number before ordering.\u003c\/p\u003e\n\u003ch3\u003eDoes M154897 fit the John Deere X304?\u003c\/h3\u003e\n\u003cp\u003eIt fits select X304 mower-deck configurations listed by the supplier. Match the original belt number, deck type, and applicable serial range.\u003c\/p\u003e\n\u003ch3\u003eDoes M154897 fit the John Deere X310?\u003c\/h3\u003e\n\u003cp\u003eThe supplier associates this belt with select X310 deck configurations. Confirm that the required belt is the short primary deck-drive belt.\u003c\/p\u003e\n\u003ch3\u003eDoes M154897 fit the John Deere X320?\u003c\/h3\u003e\n\u003cp\u003eIt fits select X320 48-inch and 54-inch mower-deck paths using M154897 or M172924 as the primary belt.\u003c\/p\u003e\n\u003ch3\u003eDoes M154897 fit the John Deere X340?\u003c\/h3\u003e\n\u003cp\u003eThe supplier lists select X340 42-inch, 48-inch, and 54-inch deck configurations. Production and serial changes make the original belt number important.\u003c\/p\u003e\n\u003ch3\u003eDoes M154897 fit the John Deere X360?\u003c\/h3\u003e\n\u003cp\u003eThe supplier associates the belt with select X360 42-inch, 48-inch, and 54-inch deck configurations.\u003c\/p\u003e\n\u003ch3\u003eDoes this belt fit the John Deere X500 Series?\u003c\/h3\u003e\n\u003cp\u003eThe supplier lists select X500, X520, X530, X534, X540, and X590 mower-deck configurations. Not every deck within those model families uses this belt.\u003c\/p\u003e\n\u003ch3\u003eIs this the tractor traction-drive belt?\u003c\/h3\u003e\n\u003cp\u003eNo. This listing is for a mower-deck drive belt. The traction-drive belt that moves the tractor is a separate part.\u003c\/p\u003e\n\u003ch3\u003eCan I order this belt using only the mower model?\u003c\/h3\u003e\n\u003cp\u003eNo. Confirm the original belt number, deck size, belt position, serial range when applicable, dimensions, and pulley routing before ordering.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eRelated John Deere Parts and Guides\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pto-clutch-am141536\"\u003eAM141536 PTO Clutch Replacement\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/deck-belt-m154958\"\u003eM154958 \/ M110313 Secondary Deck Belt\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/spindle-assembly-am136733\"\u003eAM136733 \/ AM137483 Spindle Assembly\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/john-deere-quick-reference\/john-deere-x320\"\u003eJohn Deere X320 Quick Reference\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cstrong\u003eNeed a different belt?\u003c\/strong\u003e Browse the full \u003ca href=\"\/collections\/belts\"\u003emower deck belts collection\u003c\/a\u003e.\u003c\/p\u003e","brand":"PTO Direct USA","offers":[{"title":"Default Title","offer_id":53200108323183,"sku":"CAL-295967417184","price":34.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0957\/5058\/6735\/files\/M154897-belt.jpg?v=1783913535","url":"https:\/\/ptodirectusa.com\/products\/deck-belt-m154897","provider":"PTO Direct USA","version":"1.0","type":"link"}