{"product_id":"catalytic-converter-for-infiniti-fx35-2009-2012-3-5l","title":"Catalytic Converter for Infiniti FX35 (2009-2012) 3.5L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Stainless Catalytic Converter Pair for 2009-2012 Infiniti FX35 (S51)\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e This direct-fit catalytic converter pair replaces both factory banks on the 2009-2012 Infiniti FX35 (\u003cstrong\u003eS51\u003c\/strong\u003e) powered by the \u003cstrong\u003eVQ35HR 3.5L V6\u003c\/strong\u003e to restore proper exhaust flow and emissions conversion.\u003c\/p\u003e\u003ch3\u003eThe Stock Infiniti FX35 Catalytic Converter Failure\u003c\/h3\u003e\u003cp\u003eHigh-mileage \u003cstrong\u003eS51\u003c\/strong\u003e chassis vehicles equipped with the high-revving \u003cstrong\u003eVQ35HR 3.5L V6\u003c\/strong\u003e subject their dual-stage exhaust converters to severe thermal cycling and heat soak. Over time, oil consumption, rich fuel trims, or ignition misfires overheat the factory ceramic substrate, causing the precious-metal washcoat to degrade or the core to fracture internally. Once the honeycomb breaks apart, downstream oxygen sensors detect oxygen storage loss and trigger \u003cstrong\u003eP0420\u003c\/strong\u003e or \u003cstrong\u003eP0430\u003c\/strong\u003e catalyst efficiency faults while broken chunks choke exhaust flow.\u003c\/p\u003e\u003ch4\u003eCommon Symptoms of a Failing OEM Catalytic Converter\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck Engine Light:\u003c\/strong\u003e Triggers \u003cstrong\u003eP0420\u003c\/strong\u003e or \u003cstrong\u003eP0430\u003c\/strong\u003e catalyst efficiency fault codes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetallic Rattle:\u003c\/strong\u003e Broken ceramic substrate rattling inside the housing on startup or deceleration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Loss \u0026amp; Failed Smog:\u003c\/strong\u003e Elevated exhaust backpressure, sluggish throttle response, and failed emissions inspections.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe Direct-Fit Stainless Exhaust Solution\u003c\/h3\u003e\u003cp\u003eThis paired replacement restores both exhaust banks simultaneously using corrosion-resistant stainless steel bodies (8-inch length, 5-inch height) and mandrel-matched factory flange geometry. Each pipe houses a two-stage ceramic honeycomb substrate coated with a precious-metal washcoat engineered to convert HC, CO, and NOx efficiently under \u003cstrong\u003eVQ35HR\u003c\/strong\u003e operating temperatures. Precision-located post-catalyst oxygen sensor bungs and factory mounting brackets ensure a leak-free, bolt-on installation with no cutting or welding required.\u003c\/p\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e2 x Catalytic Converter Pipes (Pair)\u003c\/li\u003e\n\u003cli\u003e2 x 2-Bolt Flange Gaskets\u003c\/li\u003e\n\u003cli\u003e2 x Ring Gaskets\u003c\/li\u003e\n\u003cli\u003e6 x Bolts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; min-width: 300px;\"\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;\"\u003e2009-2012 Infiniti FX35\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;\"\u003eVQ35HR 3.5L V6 \/ S51\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;\"\u003eEmissions \u0026amp; Substrate\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eEPA Federal (46-State Legal) \/ Ceramic Honeycomb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eInstallation Type\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eDirect Bolt-On OEM Replacement (No Cutting or Welding)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eInfiniti FX35 (2009, 2010, 2011, 2012) — 3.5L V6 (\u003cstrong\u003eS51\u003c\/strong\u003e)\u003c\/li\u003e\n\u003cli\u003eExcludes 2003-2008 FX35 (\u003cstrong\u003eS50\u003c\/strong\u003e) and FX50 5.0L V8 models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\u003ch4\u003eDoes this fit the S51 FX35?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e This is a direct fit for the 2009-2012 Infiniti FX35 equipped with the \u003cstrong\u003eVQ35HR 3.5L V6\u003c\/strong\u003e engine. \u003cstrong\u003eExcludes 2003-2008 FX35, FX50 5.0L V8, and CARB-regulated states (CA, NY, CO, ME).\u003c\/strong\u003e\u003c\/p\u003e\u003ch4\u003eWill this clear P0420\/P0430 codes, and are O2 sensors included?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes, when caused by a worn catalyst.\u003c\/strong\u003e Replacing both banks resolves \u003cstrong\u003eP0420\/P0430\u003c\/strong\u003e codes if no exhaust leaks exist; transfer your existing O2 sensors or install new ones.\u003c\/p\u003e\u003ch4\u003eAre gaskets and mounting hardware included?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e Flange gaskets, ring gaskets, and bolts are included; soak seized fasteners with penetrating oil and torque evenly after cooling.\u003c\/p\u003e\u003ch3\u003eThe Infiniti Performance Standard\u003c\/h3\u003e\u003cp\u003eEngineered for the \u003cstrong\u003eS51\u003c\/strong\u003e platform, this dual-bank converter restores factory exhaust flow efficiency and crisp \u003cstrong\u003eVQ35HR\u003c\/strong\u003e throttle response. Precision flange alignment ensures leak-free sealing and reliable OBD-II readiness.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":68085270970616,"sku":"DS-EWBAXOCGS","price":316.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-infiniti-fx35-2009-2012-3-5l-1.jpg?v=1794543217","url":"https:\/\/performancechiptuning.com\/products\/catalytic-converter-for-infiniti-fx35-2009-2012-3-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}