{"product_id":"catalytic-converter-for-subaru-wrx-2015-2021-2-0l-turbo-rear","title":"Catalytic Converter for Subaru WRX (2015-2021) 2.0L Turbo Rear","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Rear Catalytic Converter for 2015-2021 Subaru WRX (VA)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Direct-Fit Rear Catalytic Converter replaces the degraded secondary factory converter on the 2015-2021 Subaru WRX to clear catalyst efficiency codes like P0420 and restore exhaust flow without modifying factory exhaust geometry.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Subaru WRX Exhaust Substrate Breakdown\u003c\/h3\u003e\n\u003cp\u003eThe factory secondary catalytic converter on the \u003cstrong\u003eVA\u003c\/strong\u003e chassis WRX endures persistent thermal stress from the twin-scroll turbocharged direct-injection setup. Over time, high exhaust gas temperatures and direct-injection combustion byproducts degrade the OEM ceramic monolith washcoat. This causes structural crumbling, internal substrate rattle, restricted exhaust velocity, and recurring P0420 or P0430 diagnostic trouble codes that signal catalyst efficiency failure.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered as a bolt-on replacement, this rear catalytic converter features heavy-duty stainless steel casing and precision-machined flanges to resist rust, oxidation, and heat fatigue. The internal high-flow ceramic honeycomb substrate is coated with an active precious-metal washcoat, efficiently neutralizing HC, CO, and NOx emissions while maintaining factory backpressure levels. Built to OEM physical dimensions, it directly aligns with stock factory hangers, flanges, and sensor bungs—eliminating any need for cutting, welding, or custom pipe bending.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x Rear Catalytic Converter\u003c\/li\u003e\n  \u003cli\u003eInstallation Gasket(s)\u003c\/li\u003e\n  \u003cli\u003eMounting Hardware\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;\"\u003e2015-2021 Subaru WRX\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;\"\u003eFA20DIT \/ VA\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;\"\u003e268 hp \/ 258 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;\"\u003e643170\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\u003e2015 Subaru WRX 2.0L Turbo (Position: Rear)\u003c\/li\u003e\n  \u003cli\u003e2016 Subaru WRX 2.0L Turbo (Position: Rear)\u003c\/li\u003e\n  \u003cli\u003e2017 Subaru WRX 2.0L Turbo (Position: Rear)\u003c\/li\u003e\n  \u003cli\u003e2018 Subaru WRX 2.0L Turbo (Position: Rear)\u003c\/li\u003e\n  \u003cli\u003e2019 Subaru WRX 2.0L Turbo (Position: Rear)\u003c\/li\u003e\n  \u003cli\u003e2020 Subaru WRX 2.0L Turbo (Position: Rear)\u003c\/li\u003e\n  \u003cli\u003e2021 Subaru WRX 2.0L Turbo (Position: Rear)\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 VA WRX?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2015-2021 Subaru WRX equipped with the \u003cstrong\u003eFA20DIT\u003c\/strong\u003e 2.0L Turbo engine. \u003cstrong\u003eNote: This is the rear converter unit only (the front converter is sold separately) and is EPA compliant for 49 states (not legal for sale or use in California or CARB-adopting states).\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eWill this clear a catalyst efficiency code like P0420?\u003c\/h4\u003e\n\u003cp\u003eYes, replacing a fouled or failed rear converter restores factory emissions scrub rates and clears catalyst efficiency check-engine codes once the ECU drive cycles are completed.\u003c\/p\u003e\n\n\u003ch3\u003eThe Subaru Performance Caliber\u003c\/h3\u003e\n\u003cp\u003eBuilt to handle the aggressive boost dynamics of the turbocharged \u003cstrong\u003eFA20DIT\u003c\/strong\u003e platform, this replacement catalytic converter restores necessary backpressure equilibrium, clean emissions compliance, and original spool response.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67911314079992,"sku":"DS-E2U38PW9O","price":316.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-subaru-wrx-2015-2021-2-0l-turbo-rear-1.jpg?v=1793399997","url":"https:\/\/performancechiptuning.com\/de\/products\/catalytic-converter-for-subaru-wrx-2015-2021-2-0l-turbo-rear","provider":"Performance Chip Tuning","version":"1.0","type":"link"}