{"product_id":"catalytic-converter-for-infiniti-m37-2011-2013-3-7l","title":"Catalytic Converter for Infiniti M37 (2011-2013) 3.7L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Stainless Catalytic Converter Pair for 2011-2013 Infiniti M37 (Y51)\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e This direct-fit left and right catalytic converter pair restores factory exhaust scavenging and emissions conversion on the 2011-2013 Infiniti M37 (\u003cstrong\u003eY51\u003c\/strong\u003e) powered by the \u003cstrong\u003eVQ37VHR 3.7L V6\u003c\/strong\u003e.\u003c\/p\u003e\u003ch3\u003eThe Stock Infiniti M37 Catalytic Converter Failure\u003c\/h3\u003e\u003cp\u003eOn higher-mileage \u003cstrong\u003eY51\u003c\/strong\u003e sedans, the OEM converters bolted to the \u003cstrong\u003eVQ37VHR 3.7L V6\u003c\/strong\u003e suffer from severe heat soak and internal ceramic brick degradation. Repeated thermal cycling and unburned fuel or oil vapor cause the factory substrate to fracture, melt, or detach from its retention matting. Once the precious-metal washcoat loses oxygen-storage capacity, downstream O2 sensors detect poor hydrocarbon and CO conversion, triggering \u003cstrong\u003eP0420\/P0430\u003c\/strong\u003e codes while loose ceramic chunks rattle inside the shell and restrict 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 \/ DTCs:\u003c\/strong\u003e Stored \u003cstrong\u003eP0420\u003c\/strong\u003e (Bank 1) or \u003cstrong\u003eP0430\u003c\/strong\u003e (Bank 2) codes triggered when downstream O2 sensors mirror upstream exhaust readings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetallic Substrate Rattle:\u003c\/strong\u003e Audible buzzing or rattling beneath the floorpan at idle and deceleration caused by a fractured ceramic brick vibrating inside the housing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcessive Exhaust Backpressure:\u003c\/strong\u003e Sluggish throttle response, reduced high-RPM power, and failed emissions inspections due to melted or plugged honeycomb passages.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe Direct-Fit Stainless Exhaust Solution\u003c\/h3\u003e\u003cp\u003eEngineered as a complete left-and-right bank replacement, this converter set pairs corrosion-resistant stainless steel shells and tubing with a high-flow ceramic honeycomb substrate coated in precious-metal catalysts. Factory-spec flanges, welded brackets, and integrated O2 sensor bungs replicate original \u003cstrong\u003eY51\u003c\/strong\u003e exhaust geometry for a true bolt-on fit with zero cutting or welding. The EPA-compliant washcoat restores proper HC, CO, and NOx conversion while eliminating exhaust restriction and clearing catalyst-efficiency faults on federal-emissions vehicles.\u003c\/p\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e2 x Catalytic Converter (Left and Right Bank)\u003c\/li\u003e\n\u003cli\u003e2 x Flange Gasket\u003c\/li\u003e\n\u003cli\u003e2 x Ring Seal\u003c\/li\u003e\n\u003cli\u003eFull Mounting Bolt Set\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;\"\u003e2011-2013 Infiniti M37\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;\"\u003eVQ37VHR 3.7L V6 \/ Y51\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\u003e2011 Infiniti M37 3.7L V6 (Base, Premium, AWD X \/ M37x)\u003c\/li\u003e\n\u003cli\u003e2012 Infiniti M37 3.7L V6 (Base, Premium, AWD X \/ M37x)\u003c\/li\u003e\n\u003cli\u003e2013 Infiniti M37 3.7L V6 (Base, Premium, AWD X \/ M37x)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\u003ch4\u003eDoes this fit the Y51 M37?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e This is a direct fit for the 2011-2013 Infiniti M37 (Base, Premium, and AWD M37x) equipped with the \u003cstrong\u003eVQ37VHR 3.7L V6\u003c\/strong\u003e engine. \u003cstrong\u003eIt does not fit the M56 5.6L V8 or M35h hybrid, and it is not CARB-approved for vehicles registered in California, New York, Colorado, or Maine.\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, if the fault stems from a worn converter; O2 sensors are not included.\u003c\/strong\u003e Installing this new \u003cstrong\u003eVQ37VHR\u003c\/strong\u003e converter pair restores catalyst efficiency to clear \u003cstrong\u003eP0420\u003c\/strong\u003e and \u003cstrong\u003eP0430\u003c\/strong\u003e codes, provided you inspect for exhaust leaks and transfer functional sensors or install new ones into the integrated ports.\u003c\/p\u003e\u003ch4\u003eAre gaskets and mounting hardware included for installation?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e The kit supplies two flange gaskets, two ring seals, and a full bolt set; soak corroded fasteners with penetrating oil on a cold exhaust and torque evenly before checking joints for leaks.\u003c\/p\u003e\u003ch3\u003eThe Infiniti Performance Standard\u003c\/h3\u003e\u003cp\u003eBuilt for the \u003cstrong\u003eY51\u003c\/strong\u003e chassis, replacing both banks together restores balanced exhaust scavenging and crisp \u003cstrong\u003eVQ37VHR\u003c\/strong\u003e throttle response. You get quiet, leak-free operation and reliable OBD-II readiness without dealer assembly pricing.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":68089951944952,"sku":"DS-E53KUSOPR","price":221.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-infiniti-m37-2011-2013-3-7l-1.jpg?v=1794585043","url":"https:\/\/performancechiptuning.com\/fr\/products\/catalytic-converter-for-infiniti-m37-2011-2013-3-7l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}