{"product_id":"air-compressor-for-cummins-isl-isc-s21435-3966521-3966521rx-3969110-5301094rx","title":"Air Compressor For Cummins ISL ISC S21435 3966521 3966521RX 3969110 5301094RX","description":"\u003ch2\u003eAir Compressor for Cummins ISL ISC\u003c\/h2\u003e\u003cp\u003eThis air compressor replaces OEM cross-reference numbers S21435, 3966521, 3966521RX, 3969110, and 5301094RX, delivering the compressed air your brake system and air-operated accessories depend on.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis air compressor is a direct-fit replacement for Cummins ISL and ISC diesel engines, supplying the constant air pressure needed to run air brakes and other pneumatic systems on medium and heavy-duty trucks. Built as an alternative to the listed OEM cross-reference numbers, it keeps your compressed air system working without a dealer-only price. It is a practical choice for fleet mechanics and owner-operators maintaining Cummins ISL ISC equipment.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eDirect replacement for OEM cross-reference numbers S21435, 3966521, 3966521RX, 3969110, and 5301094RX\u003c\/li\u003e\n\u003cli\u003eEngineered for Cummins ISL and ISC diesel applications\u003c\/li\u003e\n\u003cli\u003eCast housing and internal components built to withstand continuous duty cycles\u003c\/li\u003e\n\u003cli\u003eDesigned to deliver consistent air pressure for brake and accessory systems\u003c\/li\u003e\n\u003cli\u003eSupports the air demand of heavy-duty truck pneumatic circuits\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Cummins ISL engines requiring the listed cross-reference compressor\u003c\/li\u003e\n\u003cli\u003efor Cummins ISC engines requiring the listed cross-reference compressor\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eAir brake system charging on medium and heavy-duty trucks\u003c\/li\u003e\n\u003cli\u003eFleet maintenance and compressor replacement service\u003c\/li\u003e\n\u003cli\u003eAir-operated accessory supply on commercial diesel vehicles\u003c\/li\u003e\n\u003cli\u003eOver-the-road repair for owner-operators\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number(s)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eS21435, 3966521, 3966521RX, 3969110, 5301094RX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAir Compressor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eEngine Fitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCummins ISL, ISC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch4\u003eGood To Know\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Does this compressor come with a core charge? \u003cstrong\u003eA:\u003c\/strong\u003e Core charge policies vary by seller, so check the listing details before ordering to confirm whether a core return applies. \u003cstrong\u003eA:\u003c\/strong\u003e Confirm your engine model and existing compressor number match the cross-references listed above.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Will this fit a Cummins ISL and an ISC engine? \u003cstrong\u003eA:\u003c\/strong\u003e It is listed for both ISL and ISC applications, but serial number variations exist, so verify your specific engine before purchase. \u003cstrong\u003eA:\u003c\/strong\u003e Matching the OEM number on your old compressor is the surest way to confirm fit.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSlight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Solid Spare","offers":[{"title":"Default Title","offer_id":50556876652630,"sku":"ZZ3P00716","price":690.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/s-l1600_0d9abefd-126a-4d8a-bb1f-9013c45780f9.jpg?v=1790947394","url":"https:\/\/www.solidspare.com\/products\/air-compressor-for-cummins-isl-isc-s21435-3966521-3966521rx-3969110-5301094rx","provider":"Solid Spare","version":"1.0","type":"link"}