{"product_id":"p621725-engine-air-filter-for-kenworth-t680-t880-replacement-fit","title":"P621725 Engine Air Filter for Kenworth T680 T880 - Replacement Fit","description":"\u003cp\u003eIn this review the reviewer looked specifically at the P621725 engine air filter as a direct replacement option for heavy-duty Kenworth and Peterbilt engines. The bottom line: this filter is for truck owners and fleet technicians who need a compatible, no-frills replacement that matches common OEM and aftermarket cross references. It earns attention because it fits PACCAR MX11 and MX13 applications as well as Cummins X15 and ISX families, so the single biggest reason to buy is broad engine compatibility that simplifies parts sourcing during routine service.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide compatibility:\u003c\/strong\u003e Covers Kenworth T680 and T880 plus Peterbilt 567 and 579 engines, reducing the need to stock multiple part numbers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMultiple engine families supported:\u003c\/strong\u003e Works with PACCAR MX11, PACCAR MX13, Cummins X15 and ISX variants so it fits common heavy-duty diesel setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect replacement references:\u003c\/strong\u003e Listed as an alternative to LAF6725, P637453, PA32000, WA11058 and 501058 to help technicians cross-check inventory quickly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAftermarket convenience:\u003c\/strong\u003e Supplies a cost-effective option for routine maintenance without changing engine components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand backing:\u003c\/strong\u003e Sold under HPOPUAUTO which positions it as a straightforward replacement part for commercial trucks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eTruck owners, fleet maintenance managers and independent diesel technicians who service Kenworth T680, T880 or Peterbilt 567 and 579 rigs will find this P621725 fit useful because it matches common OEM cross references and engine types. Its broad compatibility with PACCAR and Cummins engines makes it a practical part to keep on hand for scheduled air filter changes.\u003c\/p\u003e\n\u003cp\u003eThose seeking a specialized performance filter or a branded OEM element with manufacturer warranty backing should consider looking elsewhere; this product is presented as a reliable aftermarket replacement rather than a high-performance or certified OEM component.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCompatible with multiple PACCAR and Cummins engine families, simplifying parts choice.\u003c\/li\u003e\n\u003cli\u003eCross-references common aftermarket and OEM part numbers for easy verification.\u003c\/li\u003e\n\u003cli\u003eUseful for fleets that want a single replacement option across similar truck models.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNot promoted as an OEM-branded filter, so customers wanting factory-certified parts may prefer the original manufacturer.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct name\u003c\/td\u003e\n\u003ctd\u003eP621725 Engine Air Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible vehicles\u003c\/td\u003e\n\u003ctd\u003eKenworth T680, T880; Peterbilt 567, 579\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible engines\u003c\/td\u003e\n\u003ctd\u003ePACCAR MX11, PACCAR MX13, Cummins X15, Cummins ISX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReplaces\u003c\/td\u003e\n\u003ctd\u003eLuber-Finer LAF6725; Donaldson P637453; Baldwin PA32000; Wix WA11058; NAPA 501058\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eHPOPUAUTO\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe P621725 is a practical aftermarket air filter for Kenworth and Peterbilt diesel trucks that need a dependable replacement matching common cross references. For fleet maintenance and independent shops it represents good value because it covers multiple engine families and cuts inventory complexity, though operators seeking factory OEM certification should weigh that preference against the cost savings.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this filter fit my Kenworth T680?\u003c\/strong\u003e\u003cbr\u003eYes; the P621725 is specified as compatible with Kenworth T680 engines using PACCAR MX13 or MX11 and certain Cummins X15 applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich part numbers does this replace?\u003c\/strong\u003e\u003cbr\u003eIt is listed as a replacement for LAF6725, P637453, PA32000, WA11058 and 501058 for cross-checking with existing inventory.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs this an OEM filter?\u003c\/strong\u003e\u003cbr\u003eThis is an aftermarket HPOPUAUTO replacement designed to match fitments and references rather than being a factory-branded OEM element.\u003c\/p\u003e","brand":"HPOPUAUTO","offers":[{"title":"Default Title","offer_id":48153208258779,"sku":"B0F1SXDVQB","price":57.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/71D-oxkjN6L._AC_SL1500.jpg?v=1768736578","url":"https:\/\/gearmusthave.com\/products\/p621725-engine-air-filter-for-kenworth-t680-t880-replacement-fit","provider":"GearMustHave","version":"1.0","type":"link"}