{"product_id":"catalytic-converter-for-nissan-altima-2007-2016-2-5l-rear","title":"Catalytic Converter for Nissan Altima (2007-2016) 2.5L Rear","description":"\u003ch2\u003eDirect-Fit Rear Catalytic Converter for 2007-2016 Nissan Altima\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The rear catalytic converter for the 2007-2016 Nissan Altima restores exhaust gas scrub efficiency, eliminates P0420 fault codes, and recovers lost engine performance caused by high-mileage exhaust restriction.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Nissan Altima Downstream Catalyst Degradation\u003c\/h3\u003e\n\u003cp\u003eFactory underfloor catalytic converters on the \u003cstrong\u003eL32\u003c\/strong\u003e and \u003cstrong\u003eL33\u003c\/strong\u003e platforms degrade progressively through thermal cycles and exhaust soot accumulation. The high thermal loading from the \u003cstrong\u003eQR25DE\u003c\/strong\u003e inline-four causes factory washcoat attrition and internal ceramic substrate breakdown over extended mileage. As the porous matrix clogs, backpressure builds up the exhaust tract, causing increased exhaust gas temperatures, restricted exhaust scavenging, sluggish throttle response, and unavoidable illumination of the check engine light (CEL) due to degraded conversion efficiency across downstream oxygen sensor monitors.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered as a bolt-on solution, this rear assembly replaces the deteriorated OEM unit without custom cutting or welding. Fabricated with an automated-welded stainless steel outer casing, it resists road salt corrosion and road-debris impact. Internally, a dense ceramic monolith substrate is washcoated with active precious metals (platinum, palladium, and rhodium) to rapidly chemically reduce harmful CO, HC, and NOx emissions. Laser-cut direct-fit flanges and included high-temperature mounting hardware ensure leak-free seal integrity under heavy thermal expansion.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; margin-bottom: 20px;\"\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e2007-2016 Nissan Altima\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eQR25DE \/ L32, L33\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e175-182 hp \/ 180 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2007-2012 Nissan Altima 2.5L Base, S, SL (Chassis: L32)\u003c\/li\u003e\n  \u003cli\u003e2008-2013 Nissan Altima Coupe 2.5L S (Chassis: D32)\u003c\/li\u003e\n  \u003cli\u003e2013-2016 Nissan Altima 2.5L Base, S, SV, SL (Chassis: L33)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the L32 and L33 Altima?\u003c\/strong\u003e\u003cbr\u003e Yes, this direct-fit rear converter assembly fits both the fourth- and fifth-generation 2007-2016 Nissan Altima equipped with the 2.5L \u003cstrong\u003eQR25DE\u003c\/strong\u003e engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this resolve a P0420 catalytic efficiency diagnostic code?\u003c\/strong\u003e\u003cbr\u003e Yes, replacing a compromised downstream substrate with this fresh washcoat assembly restores standard emissions conversion efficiency and clears catalytic monitor trouble codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Nissan JDM Reliability Caliber\u003c\/h3\u003e\n\u003cp\u003eEngineered specifically for high-revving Japanese platforms, this direct-fit catalytic converter restores clean factory sound resonance, maintains balanced exhaust velocity, and delivers durable daily-driver performance.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50501713494264,"sku":"DS-EN0WIT3AQ","price":213.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-nissan-altima-2007-2016-2-5l-rear-1.jpg?v=1789330523","url":"https:\/\/performancechiptuning.com\/fr\/products\/catalytic-converter-for-nissan-altima-2007-2016-2-5l-rear","provider":"Performance Chip Tuning","version":"1.0","type":"link"}