{"product_id":"catalytic-converter-for-subaru-legacy-outback-2010-2012-2-5l-front","title":"Catalytic Converter for Subaru Legacy Outback (2010-2012) 2.5L Front","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Front Catalytic Converter for 2010-2012 Subaru Legacy \u0026amp; Outback (BM\/BR)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The front catalytic converter replaces deteriorated factory emissions plumbing on 2010-2012 Subaru Legacy and Outback models to eliminate P0420 fault codes, restore exhaust scavenging efficiency, and ensure clean exhaust gas conversion.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Subaru Legacy \u0026amp; Outback Converter Degradation\u003c\/h3\u003e\n\u003cp\u003eThe factory front manifold converter on \u003cstrong\u003eBM\/BR\u003c\/strong\u003e chassis models frequently succumbs to internal ceramic monolith washcoat breakdown, core sintering, and cracked collector flanges caused by continuous thermal cycling and boxer-engine vibration. Over time, contaminated upstream exhaust gases foul the precious metal substrate, restricting flow through the cell matrix, triggering recurring P0420 catalytic efficiency DTCs, and degrading overall fuel trim balance on the \u003cstrong\u003eEJ253\u003c\/strong\u003e engine.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered as a bolt-on replacement, this unit features a heavy-duty stainless steel casing designed to resist corrosion, road salt pitting, and thermal shock. Inside, a high-flow ceramic honeycomb substrate is loaded with an EPA-grade washcoat to maximize catalytic reaction surface area without inducing parasitic exhaust backpressure. Precision robotically welded flanges and factory-matched primary runner geometry prevent common header leaks while mating seamlessly to the cylinder heads and mid-pipe interface.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 Front Catalytic Converter Assembly\u003c\/li\u003e\n  \u003cli\u003eMounting Bolts\u003c\/li\u003e\n  \u003cli\u003eHardware Screws\u003c\/li\u003e\n  \u003cli\u003eExhaust Flange Seal\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;\"\u003e2010-2012 Subaru Legacy, Outback\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;\"\u003eEJ253 2.5L H4 \/ BM (Legacy), BR (Outback)\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;\"\u003e170 hp \/ 170 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;\"\u003e674-864, 4096-1854, 44620-AB620, 44620-AA970, 44620 AC07A, 44620-AC750, 44620AC750, 674864, 0961856, 642803, 18265, 73050, 16564, 40859, 58285\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\u003e2010-2012 Subaru Legacy 2.5L (Naturally Aspirated)\u003c\/li\u003e\n  \u003cli\u003e2010-2012 Subaru Outback 2.5L (Naturally Aspirated)\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 BM\/BR Legacy, Outback?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2010-2012 Subaru Legacy and Outback equipped with the \u003cstrong\u003eEJ253\u003c\/strong\u003e 2.5L naturally aspirated engine. \u003cstrong\u003eThis part is not legal for sale or use in California, New York, Colorado, or Maine emissions applications (EPA compliant only; non-CARB).\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eIs an ECU tune or welding required to install this converter?\u003c\/h4\u003e\n\u003cp\u003eNo tuning or welding is required; it installs directly onto factory manifold studs and exhaust hanger locations using the included hardware and seal.\u003c\/p\u003e\n\n\u003ch3\u003eThe Subaru Precision Standard\u003c\/h3\u003e\n\u003cp\u003eMaintain proper boxer backpressure, crisp throttle response, and full emissions compliance on your AWD platform without sacrificing factory exhaust balance.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67563086446840,"sku":"DS-E6KPA7MOP","price":154.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-subaru-legacy-outback-2010-2012-2-5l-front-1.jpg?v=1791000814","url":"https:\/\/performancechiptuning.com\/es\/products\/catalytic-converter-for-subaru-legacy-outback-2010-2012-2-5l-front","provider":"Performance Chip Tuning","version":"1.0","type":"link"}