{"product_id":"catalytic-converter-for-audi-q7-2007-2010-4-2l-left-right","title":"Catalytic Converter for Audi Q7 (2007-2010) 4.2L Left \u0026 Right","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Catalytic Converter Set for 2007-2010 Audi Q7 (4L)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The catalytic converter set replaces deteriorated factory emissions units on the 2007-2010 Audi Q7 to clear catalyst efficiency codes and restore proper exhaust scavenging velocity.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Audi Q7 Catalytic Converter Degradation\u003c\/h3\u003e\n\u003cp\u003eThermal stress and sustained exhaust gas temperatures from the high-compression \u003cstrong\u003eBAR\u003c\/strong\u003e 4.2L FSI engine inevitably cause washcoat degradation on factory catalytic substrates. Over time, internal precious metal loading loses its oxygen storage capacity, prompting the ECU to register downstream catalyst efficiency threshold faults (\u003cstrong\u003eP0420\u003c\/strong\u003e and \u003cstrong\u003eP0430\u003c\/strong\u003e). Continued operation with compromised converters often results in substrate sintering, physical matrix fracture, increased backpressure, and unburned hydrocarbon odor.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered as a direct replacement for OEM part number \u003cstrong\u003e4676461\u003c\/strong\u003e, this left-and-right assembly features robust stainless steel outer canisters paired with high-efficiency ceramic honeycomb cores. Precision-machined 3-bolt flanges match the factory downpipe and mid-pipe interfaces, eliminating any need for cutting or custom welding. Factory-located upstream and downstream O2 sensor ports ensure accurate air-fuel ratio telemetry to keep fuel trims stable and prevent CEL recurrence under heavy load.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x Left Catalytic Converter\u003c\/li\u003e\n  \u003cli\u003e1 x Right Catalytic Converter\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \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;\"\u003e2007-2010 Audi Q7\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;\"\u003e4.2L V8 (BAR) \/ \u003cstrong\u003e4L\u003c\/strong\u003e\n\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;\"\u003e350 hp \/ 325 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;\"\u003e\u003cstrong\u003e4676461\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2007-2010 Audi Q7 4.2L V8 (Chassis: \u003cstrong\u003e4L\u003c\/strong\u003e, Engine: \u003cstrong\u003eBAR\u003c\/strong\u003e) Left \u0026amp; Right\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the 4L Q7?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2007-2010 Audi Q7 equipped with the \u003cstrong\u003eBAR\u003c\/strong\u003e 4.2L engine. \u003cstrong\u003eDoes not fit 3.6L VR6, 3.0T supercharged, or TDI diesel models.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eAre these converters legal in my state?\u003c\/h4\u003e\n\u003cp\u003eThis is an EPA-compliant 48-state emissions system; it is not legal for sale, installation, or use in California, Colorado, New York, or Maine.\u003c\/p\u003e\n\n\u003ch3\u003eThe Audi Precision Standard\u003c\/h3\u003e\n\u003cp\u003eDirect-injection European V8 platforms demand strict catalytic efficiency monitoring to balance precise closed-loop fueling and tailpipe compliance. Re-establishing designed exhaust backpressure and proper O2 sensor switching rates protects engine management mapping and preserves powertrain performance.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67901829579000,"sku":"DS-EJZC14RFR","price":121.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-audi-q7-2007-2010-4-2l-left-right-1.jpg?v=1793341142","url":"https:\/\/performancechiptuning.com\/products\/catalytic-converter-for-audi-q7-2007-2010-4-2l-left-right","provider":"Performance Chip Tuning","version":"1.0","type":"link"}