{"product_id":"40919-40800-kax-front-and-rear-catalytic-converter-fits-altima-2-5l","title":"40919 40800 KAX Front and Rear Catalytic Converter Fits Altima 2.5L","description":"\u003cp\u003eIn this review of the 40919 40800 KAX catalytic converter set, the bottom line is simple: this replacement is aimed at owners of 2007-2013 Nissan Altima 2.5L who need an EPA-compliant, durable catalytic solution that restores emissions performance and quiets the exhaust. The single biggest reason to consider this set is its combination of \u003cstrong\u003eEPA-certified\u003c\/strong\u003e high flow design and heavy-duty stainless steel construction, which together seek to balance conversion efficiency with long-term durability for everyday driving and highway use.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Designed specifically for 2007-2013 Nissan Altima 2.5L applications to replace worn or failed factory converters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEPA and OBD3 compliance:\u003c\/strong\u003e Produced under strict procedures to meet EPA and OBD3 standards for legal road use in most states.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh flow performance:\u003c\/strong\u003e The internal design aims to increase conversion efficiency and vehicle power without sacrificing exhaust flow rate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStainless steel shell:\u003c\/strong\u003e Heavy-duty stainless outer shell and firm welds provide resistance to heat and pressure for extended service life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCeramic substrate:\u003c\/strong\u003e Internal ceramic substrate with high-load precious metals improves pollutant purification and restores quieter operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis catalytic converter set is best for DIY mechanics and independent repair shops working on 2007-2013 Altima 2.5L models who need a direct replacement that meets EPA and OBD3 guidelines. It suits owners who want a higher flow unit that may improve throttle response and help clear an emissions-related check engine light when the factory converter has failed.\u003c\/p\u003e\n\u003cp\u003eBuyers in states with stricter emission requirements such as California, Colorado, New York, and Maine should look elsewhere because sales are not carried out for those locations. Also, drivers who require an exact OEM fit right out of the box should be aware that some customers reported mixed fit and alignment results and may prefer sourcing directly from a dealer for guaranteed OEM dimensions.\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\u003eEPA-certified high flow design improves conversion while maintaining exhaust flow.\u003c\/li\u003e\n\u003cli\u003eDurable stainless steel outer shell with firm welds resists heat and extends life.\u003c\/li\u003e\n\u003cli\u003eQuality ceramic substrate with precious metal loading enhances purification.\u003c\/li\u003e\n\u003cli\u003eGood value compared with a full dealer replacement for many buyers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFit and alignment have mixed reports; O2 bung location or dimensions may require adjustment on some vehicles.\u003c\/li\u003e\n\u003cli\u003eSeveral customers noted missing hardware such as bolts and gaskets, which may require additional purchases.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eVehicle fitment\u003c\/td\u003e\n\u003ctd\u003e2007-2013 Nissan Altima 2.5L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEPA\/OBD\u003c\/td\u003e\n\u003ctd\u003eEPA certified, OBD3 compliant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eStainless steel outer shell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal substrate\u003c\/td\u003e\n\u003ctd\u003eCeramic with high-load precious metal catalyst\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDesign focus\u003c\/td\u003e\n\u003ctd\u003eHigh flow performance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncludes\u003c\/td\u003e\n\u003ctd\u003eFront and rear catalytic converters (2 pieces)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe KAX 40919 40800 catalytic converter pair is a practical, cost-conscious replacement for 2007-2013 Altima 2.5L owners who need an \u003cstrong\u003eEPA-certified\u003c\/strong\u003e high flow option with robust stainless construction. It delivers solid emissions control and durability for most drivers, but double-check fitment and be prepared to source small hardware if alignment or bolts are missing.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill this set work for my 2009 Altima 2.5L?\u003c\/strong\u003e\u003cbr\u003eYes, this catalytic converter set is specified to fit 2007 through 2013 Altima 2.5L models.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs it legal for road use?\u003c\/strong\u003e\u003cbr\u003eThe converters are produced to meet EPA and OBD3 standards, but they are not sold for use in states with stricter emission rules such as California, Colorado, New York, and Maine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I get bolts and gaskets with the converters?\u003c\/strong\u003e\u003cbr\u003eSome customers reported missing hardware; verify included parts with the seller and have replacement bolts or gaskets available if needed.\u003c\/p\u003e","brand":"KAX","offers":[{"title":"Default Title","offer_id":48205124665563,"sku":"B0CMXF928V","price":172.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/616L7cjAsOL._AC_SL1500.jpg?v=1770369504","url":"https:\/\/gearmusthave.com\/products\/40919-40800-kax-front-and-rear-catalytic-converter-fits-altima-2-5l","provider":"GearMustHave","version":"1.0","type":"link"}