{"product_id":"bajaj-genuine-pulsar-ns400z-air-filter-jl581142-dominar-400","title":"Bajaj Genuine Air Filter JL581142 for Pulsar NS400Z \u0026 Select Dominar 400","description":"\u003cp\u003e\u003cstrong\u003eBajaj Genuine Air Filter Element JL581142\u003c\/strong\u003e is a replaceable engine air cleaner cartridge for the \u003cstrong\u003eBajaj Pulsar NS400Z\u003c\/strong\u003e and certain later \u003cstrong\u003eBajaj Dominar 400\u003c\/strong\u003e airbox configurations. Also searched as the \u003cem\u003eNS400Z air filter, Pulsar NS400 air filter, air cleaner element, air filter cartridge\u003c\/em\u003e or \u003cem\u003eengine intake filter\u003c\/em\u003e, this is the individual filter element—not the complete air cleaner housing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImportant fitment check:\u003c\/strong\u003e JL581142 is catalogue-confirmed for Pulsar NS400Z 2024 and 2025 references. The Dominar 400 catalogue shows JL581142 as a variant-specific filter associated with a January 2025 \/ OBD2B change; earlier Dominar 400 airboxes may take \u003cstrong\u003eDT581062\u003c\/strong\u003e instead. Do not order solely by motorcycle name or engine size.\u003c\/p\u003e\n\u003ch2\u003eQuick Product Check\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer \/ brand\u003c\/td\u003e\n\u003ctd\u003eBajaj Auto Limited — Bajaj Genuine Parts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExact Bajaj part number\u003c\/td\u003e\n\u003ctd\u003e\n\u003cstrong\u003eJL581142\u003c\/strong\u003e (catalogue format JL 5811 42)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBajaj packaging description\u003c\/td\u003e\n\u003ctd\u003eELEMENT FILTER A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCatalogue \/ search names\u003c\/td\u003e\n\u003ctd\u003eElement Filter Air \/ Engine Air Filter \/ Air Cleaner Element \/ Air Filter Cartridge\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePrimary application\u003c\/td\u003e\n\u003ctd\u003eBajaj Pulsar NS400Z — catalogued in 2024 and 2025 air cleaner assemblies\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOther selected application\u003c\/td\u003e\n\u003ctd\u003eBajaj Dominar 400 — only where the correct revised airbox catalogue specifies JL581142\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePlacement\u003c\/td\u003e\n\u003ctd\u003eInside the engine air cleaner \/ airbox\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eRectangular pleated filter element with a dark perimeter frame, as shown in the product photos\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWhat you receive\u003c\/td\u003e\n\u003ctd\u003e1 × genuine Bajaj JL581142 filter element\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRetail pack MRP\u003c\/td\u003e\n\u003ctd\u003e₹211 inclusive of taxes on the photographed May 2026 Bajaj Genuine Parts packet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturing information\u003c\/td\u003e\n\u003ctd\u003ePhysical stock photographed: manufactured May 2026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNot included\u003c\/td\u003e\n\u003ctd\u003eAir filter housing, intake duct, top-cover seals, screws, clips, keychain and tools\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch2\u003eMotorcycle Compatibility — Check the Exact Model and Airbox\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eMotorcycle \/ version\u003c\/th\u003e\n\u003cth\u003eFitment guidance\u003c\/th\u003e\n\u003cth\u003eBefore ordering\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePulsar NS400Z — 2024\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCatalogue-confirmed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eListed as element filter air JL581142 in the 2024 NS400Z air cleaner parts reference.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePulsar NS400Z — 2025\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCatalogue-confirmed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThe 2025 air cleaner assembly lists JL581142. Check the exact production airbox, particularly around OBD2B changes.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePulsar NS400Z — 2026 or later\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eVerify before ordering\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eConfirm JL581142 by chassis-specific Bajaj parts catalogue or compare the original filter.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDominar 400 — revised 2025 OBD2B configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCatalogue cross-reference, variant-specific\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eJL581142 appears as an alternate filter in the Dominar 400 BS VI catalogue; applicability references the January 2025 OBD2B revision. Check existing element and airbox.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDominar 400 — earlier BS4 \/ BS6 or other airbox revisions\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eNot universally compatible\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSome Dominar 400 applications specify \u003cstrong\u003eDT581062\u003c\/strong\u003e; do not substitute by appearance.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDominar 250 \/ NS160 \/ NS200 \/ RS200 \/ NS125\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eNot verified for JL581142\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eThese model families use other air-filter part numbers in various revisions. Match the VIN-specific catalogue.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e A motorcycle being called “NS400”, “NS400Z”, “Dominar 400” or having a similar engine does not by itself establish interchangeability. Year, emission standard, OBD revision, airbox housing and existing filter part number can change the correct part.\u003c\/p\u003e\n\u003ch2\u003eJL581142 vs DT581062 vs JL581009 — Do Not Confuse\u003c\/h2\u003e\n\u003cdiv style=\"overflow-x:auto\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePart number\u003c\/th\u003e\n\u003cth\u003eWhat the reference indicates\u003c\/th\u003e\n\u003cth\u003ePurchasing guidance\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eJL581142\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAir filter element for NS400Z and certain revised Dominar 400 applications\u003c\/td\u003e\n\u003ctd\u003eThis listing. Check exact model and airbox.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDT581062\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAir filter used in several other Bajaj airbox configurations, including older Dominar 400 references\u003c\/td\u003e\n\u003ctd\u003eA separate part number; not automatically interchangeable with JL581142.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eJL581009\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eEarlier Pulsar NS200 \/ AS200 air-filter reference\u003c\/td\u003e\n\u003ctd\u003eNot an alternative just because “NS” appears in the bike name.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eJL581146\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSeal cover top, itemised separately in NS400Z catalogue\u003c\/td\u003e\n\u003ctd\u003eThese seals are \u003cstrong\u003enot included\u003c\/strong\u003e with this one-element listing.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch2\u003eWhat Does the Engine Air Filter Do?\u003c\/h2\u003e\n\u003cp\u003eThe engine air filter sits in the intake airbox and captures airborne dust and debris before intake air reaches the engine. Regular inspection is particularly relevant when a motorcycle is ridden on dusty roads or in frequent stop-and-go conditions. A damaged, poorly seated or heavily restricted filter may affect intake airflow, so the correct airbox fit and seating are just as important as selecting the correct part number.\u003c\/p\u003e\n\u003ch2\u003eWhen Should You Inspect or Replace the Filter?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAt the air-filter inspection or replacement interval specified in the owner’s\/service manual.\u003c\/li\u003e\n\u003cli\u003eWhen the element is visibly overloaded with dust, torn, deformed, wet with contamination or otherwise damaged.\u003c\/li\u003e\n\u003cli\u003eAfter unusually dusty riding, if the recommended maintenance schedule calls for more frequent inspection.\u003c\/li\u003e\n\u003cli\u003eIf the airbox has been opened for service and the element or seals are not seated correctly.\u003c\/li\u003e\n\u003cli\u003eIf a workshop confirms that restricted airflow or filter damage is contributing to an intake-related complaint.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDiagnostic note:\u003c\/strong\u003e Low performance, abnormal fuel consumption, hesitation or difficult starting can have many causes, including ignition, fuel-delivery, sensor, throttle-body and mechanical faults. Do not assume that replacing the air filter will automatically resolve these symptoms.\u003c\/p\u003e\n\u003ch2\u003eWhy Choose This Bajaj Genuine Replacement?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExact part identification:\u003c\/strong\u003e JL581142 is the original Bajaj spare-part reference, not an aftermarket cross-reference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication clarity:\u003c\/strong\u003e the listing separates confirmed NS400Z use from revised-configuration Dominar 400 use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndividual service component:\u003c\/strong\u003e suitable when the filter element alone needs replacement rather than the full airbox.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenuine-pack identification:\u003c\/strong\u003e supplied in Bajaj Genuine Parts packaging; the pictured stock shows the factory part number and printed MRP.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced ordering errors:\u003c\/strong\u003e clear distinctions between JL581142, DT581062 and separate airbox seals.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePackage Contents \u0026amp; Exclusions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIncluded:\u003c\/strong\u003e 1 × Bajaj Genuine engine air filter element, part number JL581142.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot included:\u003c\/strong\u003e complete air-filter\/airbox assembly, intake duct, the two separately catalogued JL581146 top-cover seals, screws, other sealing components, service tools or the Under The Hood keychain used as a photography prop. Images of the sealed packet are for identification of the actual stock; the display keychain is \u003cstrong\u003enot part of the sale\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003eBefore You Order — Four-Point Fitment Checklist\u003c\/h2\u003e\n\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e confirm Pulsar NS400Z or the exact Dominar 400 revision, not only “Bajaj 400”.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e check the original element or official vehicle-specific Bajaj catalogue for \u003cstrong\u003eJL581142\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAirbox revision:\u003c\/strong\u003e for Dominar 400, investigate the older \u003cstrong\u003eDT581062\u003c\/strong\u003e versus later \u003cstrong\u003eJL581142\u003c\/strong\u003e application; on NS400Z, confirm any OBD2B air cleaner housing revisions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition and sealing:\u003c\/strong\u003e if damaged, inspect the separate seals and airbox cover; they are not supplied in this pack.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch2\u003eFitting, Service and Care Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHave a qualified technician locate and open the model-specific airbox using the correct service procedure.\u003c\/li\u003e\n\u003cli\u003eRemove the old filter carefully so accumulated dirt does not fall into the clean intake side.\u003c\/li\u003e\n\u003cli\u003eInspect the airbox, seating edge, cover and separately fitted seals for debris or damage.\u003c\/li\u003e\n\u003cli\u003eFit the new element in the correct orientation and make sure it sits evenly without a gap or pinched edge.\u003c\/li\u003e\n\u003cli\u003eRefit all cover fasteners and intake connections using the service-manual procedure; check for loose fittings.\u003c\/li\u003e\n\u003cli\u003eDo not wash, oil, blow out with high-pressure air or reuse a filter unless Bajaj specifically approves that cleaning procedure for this exact element.\u003c\/li\u003e\n\u003cli\u003eFollow Bajaj’s inspection\/replacement interval for your actual model and riding conditions. No universal kilometre interval is claimed for this SKU.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eQ. Is JL581142 a Bajaj Genuine part?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes. The photographed stock is packaged as Bajaj Genuine Parts and bears part number JL581142. This is not presented as a third-party aftermarket item.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ. Does JL581142 fit the Bajaj Pulsar NS400Z?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes. The part is listed as the engine air-filter element in the NS400Z 2024 and 2025 air-cleaner parts references. Confirm the particular vehicle revision if modified or from a later production year.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ. Does it fit the 2026 Pulsar NS400Z?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eIt may be used in some later-production bikes, but the available checked references here do not establish every 2026 airbox revision. Confirm the exact part number in the vehicle-specific parts catalogue before purchase.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ. Can I install it on my Dominar 400?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eOnly on Dominar 400 configurations specifying JL581142. The later OBD2B catalogue includes this part, while other Dominar 400 versions list DT581062. Confirm by chassis-specific parts data or the existing filter number.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ. Is it compatible with all Dominar 400 BS6 motorcycles?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eNo universal claim is made. Earlier and later Dominar 400 airboxes\/filters can differ, and BS6 alone is not sufficient identification.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ. Is JL581142 the same as DT581062?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThey are different Bajaj part numbers. A parts catalogue may show each for different airbox versions; do not substitute them unless the vehicle-specific Bajaj reference confirms the replacement.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ. Does this filter work on Dominar 250?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eDominar 250 compatibility was not established for JL581142. Check the actual Dominar 250 service parts reference before ordering.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ. Can it fit Pulsar NS200 or RS200?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eDo not assume so. The NS200 and RS200 families have their own part-number histories; purchase by the exact part reference rather than shared “Pulsar” naming.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ. What exactly comes in the package?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eOne Bajaj Genuine JL581142 air filter element. It is not the full airbox assembly, and the photographer’s Under The Hood keychain is not included.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ. Are the top-cover seals supplied with this filter?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eNo. The NS400Z catalogue lists JL581146 cover seals separately. Inspect them during service and order separately where needed.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ. Is this the full air-filter assembly?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eNo. JL581142 identifies the replaceable filter element; the complete air cleaner housing is a different part.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ. Can I wash and reuse the element?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eDo not assume it is washable or reusable. Treat it as a replaceable filter and follow the Bajaj manual for the exact element, rather than applying instructions intended for reusable performance filters.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ. Will a new air filter improve mileage or horsepower?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eNo specific power or fuel-economy gain is guaranteed. A correct, serviceable filter helps keep the intake system properly maintained, but vehicle performance depends on many other factors.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ. When should I replace the NS400Z air filter?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eFollow the inspection and replacement intervals in the correct Bajaj owner\/service manual. Dusty use, visible restriction or damage may justify earlier inspection.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eQ. How do I avoid ordering the wrong filter?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eProvide the motorcycle model, year, VIN\/chassis details where appropriate and a clear photograph of the current air-filter element or part-number label so the airbox variant can be checked before dispatch.\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003ch2\u003eBuyer Search Terms \u0026amp; Part Identification\u003c\/h2\u003e\n\u003cp\u003eBajaj NS400Z air filter; Pulsar NS400Z original air filter; Bajaj JL581142; JL 5811 42; Bajaj air filter cartridge; NS400Z filter element; NS400Z engine air cleaner filter; selected Dominar 400 OBD2B air filter; Bajaj genuine air cleaner element. These terms describe this one actual part; fitment remains subject to the compatibility notes above.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOrdering reminder:\u003c\/strong\u003e Always match the exact part number. For shortage or transit-damage reporting, retain the packaging and follow Under The Hood’s unboxing-video policy.\u003c\/p\u003e","brand":"Bajaj Auto","offers":[{"title":"Default Title","offer_id":52545869676839,"sku":"JL581142","price":209.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0878\/7447\/0183\/files\/library-966EF8E0-9818-4DD2-A224-B83AAB249C8E-L0-001.jpg?v=1794123081","url":"https:\/\/underthehood.co.in\/products\/bajaj-genuine-pulsar-ns400z-air-filter-jl581142-dominar-400","provider":"UNDER THE HOOD","version":"1.0","type":"link"}