{"product_id":"catalytic-converter-for-subaru-forester-2011-2016-2-5l-rear","title":"Catalytic Converter for Subaru Forester (2011-2016) 2.5L Rear","description":"\u003ch2\u003eDirect-Fit Rear Catalytic Converter for 2011-2016 Subaru Forester\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Rear Catalytic Converter restores compliant emissions cycling and eliminates exhaust restriction on the 2011-2016 Subaru Forester 2.5L without requiring custom fabrication or welding.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Subaru Forester Catalytic Degradation\u003c\/h3\u003e\n\u003cp\u003eFactory catalytic units on the \u003cstrong\u003eFB25\u003c\/strong\u003e boxer engine frequently experience thermal washcoat attrition and structural ceramic core breakdown after repeated heat cycles. Oil vapor migration common to high-mileage flat-four architectures can accelerate catalyst fouling, which elevates backpressure, restricts exhaust scavenging, and flags stubborn P0420 diagnostic trouble codes. Corroded factory carbon-steel flanges also degrade over time, creating post-converter exhaust leaks that throw fuel trim readings out of parameter.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis rear catalytic converter assembly features a heavy-gauge stainless steel outer shell designed to withstand underbody oxidation and severe thermal stress. Inside, a durable ceramic monolith substrate features an optimized washcoat loading to ensure maximum conversion of carbon monoxide, unburnt hydrocarbons, and oxides of nitrogen. Precision laser-cut flanges match factory exhaust hangars and downstream mid-pipes seamlessly, while mandrel-formed pipe transitions preserve laminar exhaust gas velocity. The kit includes replacement hardware and sealing gaskets to guarantee an airtight, leak-free installation.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; margin-bottom: 20px;\"\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;\"\u003e2011-2016 Subaru Forester\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;\"\u003e\n\u003cstrong\u003eFB25\u003c\/strong\u003e 2.5L \/ \u003cstrong\u003eSH\u003c\/strong\u003e \u0026amp; \u003cstrong\u003eSJ\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;\"\u003e170 hp \/ 174 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;\"\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2011-2013 Subaru Forester 2.5X, Premium, Limited, Touring 2.5L (\u003cstrong\u003eSH\u003c\/strong\u003e Chassis)\u003c\/li\u003e\n  \u003cli\u003e2014-2016 Subaru Forester 2.5i, Premium, Limited, Touring 2.5L (\u003cstrong\u003eSJ\u003c\/strong\u003e Chassis)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the SH and SJ Forester?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 2011-2016 Subaru Forester equipped with the naturally aspirated \u003cstrong\u003eFB25\u003c\/strong\u003e 2.5L engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill this resolve a P0420 catalytic efficiency trouble code?\u003c\/strong\u003e\u003cbr\u003e Provided upstream oxygen sensors and air-fuel mixtures operate within factory tolerances, this EPA-compliant unit restores exhaust cleaning efficiency to clear P0420 codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Subaru Boxer Caliber\u003c\/h3\u003e\n\u003cp\u003eSymmetrical all-wheel-drive platforms rely on precise exhaust resonance and balanced backpressure to maintain the low-end torque band characteristic of the horizontal boxer engine. This bolt-on assembly preserves OEM exhaust dynamics without triggering check engine lights or altering sound pitch.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50501725946104,"sku":"DS-EDEIXYUNP","price":253.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-subaru-forester-2011-2016-2-5l-rear-1.jpg?v=1789331189","url":"https:\/\/performancechiptuning.com\/es\/products\/catalytic-converter-for-subaru-forester-2011-2016-2-5l-rear","provider":"Performance Chip Tuning","version":"1.0","type":"link"}