{"product_id":"catalytic-converter-for-gmc-terrain-2010-2011-3-0l-front-and-rear","title":"Catalytic Converter for GMC Terrain (2010-2011) 3.0L Front and Rear","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Stainless Front \u0026amp; Rear Manifold Catalytic Converter Set for 2010-2011 GMC Terrain (Theta)\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e This complete front and rear manifold catalytic converter set replaces worn factory emissions units on the 2010-2011 \u003cstrong\u003eTheta\u003c\/strong\u003e-platform GMC Terrain with the \u003cstrong\u003eLF1 3.0L V6\u003c\/strong\u003e to restore exhaust flow and catalyst efficiency.\u003c\/p\u003e\u003ch3\u003eThe Stock GMC Terrain Catalytic Converter Failure\u003c\/h3\u003e\u003cp\u003eBecause the manifold-integrated converters on the \u003cstrong\u003eTheta\u003c\/strong\u003e chassis sit directly against the cylinder heads of the \u003cstrong\u003eLF1 3.0L V6\u003c\/strong\u003e, they endure extreme exhaust gas temperatures and constant thermal cycling. Over time, repeated heat soak and fuel-trim fluctuations degrade the precious-metal washcoat and fracture the internal ceramic brick. Once oxygen storage capacity drops below the ECM threshold, downstream sensors trigger persistent \u003cstrong\u003eP0420\/P0430\u003c\/strong\u003e codes while broken substrate fragments 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 Triggered \u003cstrong\u003eP0420\u003c\/strong\u003e (Bank 1) or \u003cstrong\u003eP0430\u003c\/strong\u003e (Bank 2) fault codes indicating degraded catalyst efficiency below ECM threshold.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAudible Substrate Rattle:\u003c\/strong\u003e Metallic rattling from the front or rear manifold area during cold starts or acceleration caused by a fractured ceramic core.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBackpressure \u0026amp; Emissions Failure:\u003c\/strong\u003e Sluggish throttle response, elevated exhaust backpressure, and failed federal OBD-II emissions testing.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe Direct-Fit Stainless Catalytic Converter Solution\u003c\/h3\u003e\u003cp\u003eThis matched front and rear manifold converter pair (\u003cstrong\u003eEXL641449 \/ 641450\u003c\/strong\u003e) uses corrosion-resistant stainless steel housings (8 in length by 5 in height) and heavy-duty tubing to prevent heat cracking. Inside, a ceramic honeycomb substrate with a precious-metal washcoat restores proper HC, CO, and NOx conversion for clean OBD-II readiness. Each unit incorporates precision O2 sensor ports, factory cylinder-head flanges, and 2-bolt downstream flanges for bolt-on installation without cutting or welding.\u003c\/p\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e2 x Manifold Catalytic Converters (Front and Rear Bank)\u003c\/li\u003e\n\u003cli\u003e2 x Manifold Flange Gaskets\u003c\/li\u003e\n\u003cli\u003e2 x 2-Bolt Flange Gaskets\u003c\/li\u003e\n\u003cli\u003e8 x Mounting Bolts with Washers and Nuts\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;\"\u003e2010-2011 GMC Terrain\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;\"\u003eLF1 3.0L V6 \/ Theta\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\u003ctr style=\"background-color: #f9f9f9;\"\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;\"\u003eEXL641449, 641450\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003ch3\u003eCompatibility\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e2010 GMC Terrain SLE 3.0L V6 (Front \u0026amp; Rear)\u003c\/li\u003e\n\u003cli\u003e2010 GMC Terrain SLT 3.0L V6 (Front \u0026amp; Rear)\u003c\/li\u003e\n\u003cli\u003e2011 GMC Terrain SLE 3.0L V6 (Front \u0026amp; Rear)\u003c\/li\u003e\n\u003cli\u003e2011 GMC Terrain SLT 3.0L V6 (Front \u0026amp; Rear)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\u003ch4\u003eDoes this fit the Theta Terrain?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e This is a direct fit for the 2010-2011 GMC Terrain equipped with the \u003cstrong\u003eLF1 3.0L V6\u003c\/strong\u003e engine. \u003cstrong\u003eExcludes 2.4L and 3.6L engines; EPA federal compliant only—not CARB approved and not legal 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, it resolves catalyst-efficiency codes, but O2 sensors are not included.\u003c\/strong\u003e Replacing both clogged converters restores conversion efficiency for \u003cstrong\u003eP0420\u003c\/strong\u003e and \u003cstrong\u003eP0430\u003c\/strong\u003e codes; transfer existing oxygen sensors or install new ones after checking for upstream exhaust leaks.\u003c\/p\u003e\u003ch4\u003eAre gaskets and mounting hardware included for installation?\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eYes.\u003c\/strong\u003e Both manifold flange gaskets, both 2-bolt downstream gaskets, and 8 bolts with washers and nuts are included; soak seized factory studs with penetrating oil on a cold exhaust and torque all flanges evenly.\u003c\/p\u003e\u003ch3\u003eThe GMC Precision Standard\u003c\/h3\u003e\u003cp\u003eBuilt for daily utility and highway reliability, this dual-bank converter kit restores proper backpressure and emissions compliance on the \u003cstrong\u003eTheta\u003c\/strong\u003e platform. Expect clean OBD-II monitor readiness and rattle-free exhaust operation across all 46 EPA-compliant states.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":68085527085304,"sku":"DS-EV87AHVMU","price":256.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-gmc-terrain-2010-2011-3-0l-front-and-rear-1.jpg?v=1794546375","url":"https:\/\/performancechiptuning.com\/es\/products\/catalytic-converter-for-gmc-terrain-2010-2011-3-0l-front-and-rear","provider":"Performance Chip Tuning","version":"1.0","type":"link"}