{"product_id":"catalytic-converter-for-bmw-x3-2004-2006-2-5l-3-0l","title":"Catalytic Converter for BMW X3 (2004-2006) 2.5L 3.0L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Replacement Catalytic Converter for 2004-2006 BMW X3 (E83)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The direct-fit catalytic converter replaces the degraded factory emissions canister on the 2004-2006 BMW X3 to clear efficiency trouble codes P0420 and P0430 while restoring correct exhaust backpressure and emissions compliance.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock BMW X3 Substrate Degradation\u003c\/h3\u003e\n\u003cp\u003eThe factory catalytic converters on the \u003cstrong\u003eBMW E83 X3\u003c\/strong\u003e face relentless thermal cycling and inevitable catalyst degradation over high mileage. Combined with crankcase vapor and blow-by oil common to aged \u003cstrong\u003eM54\u003c\/strong\u003e straight-six engines, the original noble metal washcoat fouls and sinters. This leads to reduced oxygen storage capacity, recurring P0420\/P0430 diagnostic trouble codes, and failed emissions tests. In advanced stages, fractured ceramic substrates create exhaust restrictions and noticeable internal rattling.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eBuilt as a true bolt-on replacement, this catalytic assembly utilizes a corrosion-resistant stainless steel shell engineered to withstand road debris and road salt exposure. Inside, a high-efficiency ceramic honeycomb substrate provides dense cell surface contact to reliably scrub unburned hydrocarbons, carbon monoxide, and NOx emissions. Laser-aligned factory-style mating flanges and dedicated pre- and post-catalyst O2 sensor bungs allow direct connection to OEM exhaust piping and harness sensors with zero cutting or welding required.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x Direct-Fit Catalytic Converter\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;\"\u003e2004-2006 BMW X3\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;\"\u003eM54B25, M54B30 \/ E83\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;\"\u003e184–225 hp \/ 175–214 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\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2004-2006 BMW X3 2.5i (2.5L L6 M54B25)\u003c\/li\u003e\n  \u003cli\u003e2004-2006 BMW X3 3.0i (3.0L L6 M54B30)\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 E83 X3?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2004-2006 BMW X3 equipped with the \u003cstrong\u003eM54\u003c\/strong\u003e 2.5L and 3.0L inline-six engines. \u003cstrong\u003eNote: This is an EPA-compliant 48-state legal unit and cannot be sold or shipped to California, Colorado, New York, or Maine.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eWill this resolve P0420 and P0430 trouble codes?\u003c\/h4\u003e\n\u003cp\u003eYes, provided your check engine light is caused by depleted catalyst efficiency and not upstream exhaust leaks, misfires, or defective oxygen sensors.\u003c\/p\u003e\n\n\u003ch3\u003eThe BMW Precision Standard\u003c\/h3\u003e\n\u003cp\u003eEuropean OBD-II DME monitoring requires precise exhaust chemistry balance across both cylinder banks; this unit restores exact pre- and post-catalyst sensor feedback to maintain seamless closed-loop operation without false CEL illumination.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67901599252728,"sku":"DS-EXRUSCSFH","price":292.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/catalytic-converter-for-bmw-x3-2004-2006-2-5l-3-0l-1.jpg?v=1793339284","url":"https:\/\/performancechiptuning.com\/es\/products\/catalytic-converter-for-bmw-x3-2004-2006-2-5l-3-0l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}