{"product_id":"o2-oxygen-sensor-upstream-downstream-for-dodge-ram-2500-2003-2010-5-7l","title":"O2 Oxygen Sensor Upstream Downstream for Dodge Ram 2500 (2003-2010) 5.7L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit O2 Oxygen Sensor Set for 2003-2010 Dodge Ram 2500 (DH\/DJ)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Direct-Fit Oxygen Sensor Set replaces degraded pre- and post-catalytic sensors on the 2003-2010 Dodge Ram 2500 to restore accurate stoichiometric air-fuel feedback and resolve emissions-related check engine lights.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Dodge Ram 2500 Sensor Degradation\u003c\/h3\u003e\n\u003cp\u003eFactory oxygen sensors on the heavy-duty \u003cstrong\u003eDH\/DJ\u003c\/strong\u003e platform endure severe thermal cycling and sustained exhaust gas temperatures during towing and hauling. Over time, carbon particulates, oil vapor, and fuel additives contaminate the porous ceramic zirconia electrolyte. This fouling blunts sensor response times, causing the powertrain control module (PCM) to miscalculate short- and long-term fuel trims (STFT\/LTFT). The resulting rich or lean drift triggers poor fuel economy, rough cold idle, sluggish throttle tip-in, and diagnostic trouble codes including \u003cstrong\u003eP0130\u003c\/strong\u003e, \u003cstrong\u003eP0161\u003c\/strong\u003e, \u003cstrong\u003eP0420\u003c\/strong\u003e, and \u003cstrong\u003eP0430\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis 4-piece set provides complete upstream and downstream bank coverage for the \u003cstrong\u003e5.7L HEMI\u003c\/strong\u003e V8. Manufactured with dual-layered protective sleeves and premium planar zirconia sensing elements, these sensors deliver rapid millivolt switching speeds to maintain precision closed-loop control. Each unit features factory-spec harness lengths, high-temperature wire shielding, and OE-pinned weather-pack connectors to eliminate cutting or splicing. Threaded bodies match OEM bungs for clean, leak-free sealing in high-vibration exhaust manifolds and downpipes.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2 Upstream Oxygen Sensors (Pre-Catalytic)\u003c\/li\u003e\n  \u003cli\u003e2 Downstream Oxygen Sensors (Post-Catalytic)\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;\"\u003e2003-2010 Dodge Ram 2500\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;\"\u003e5.7L HEMI V8 \/ DH\/DJ\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;\"\u003e345-383 hp \/ 375-400 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;\"\u003e234-4030, 234-4588, 234-4593, 234-4594, 234-4598, 234-4653, 234-4749, 234-4217, 234-4228, 234-4229, 234-4232, 234-4587\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\u003e2003-2010 Dodge Ram 2500 5.7L V8 (ST, SLT, Laramie, Power Wagon, TRX4)\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 DH\/DJ Ram 2500?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2003-2010 Dodge Ram 2500 equipped with the \u003cstrong\u003e5.7L HEMI\u003c\/strong\u003e gas engine. Does not fit 5.9L or 6.7L Cummins Turbo Diesel models.\u003c\/p\u003e\n\n\u003ch4\u003eDo I need to clear PCM trouble codes after replacement?\u003c\/h4\u003e\n\u003cp\u003eYes, clear stored trouble codes with an OBD-II scan tool and complete an engine drive cycle to reset fuel adaptation tables.\u003c\/p\u003e\n\n\u003ch3\u003eThe Dodge Heavy-Duty Standard\u003c\/h3\u003e\n\u003cp\u003eBuilt to handle extreme towing duty and severe thermal punishment, these direct-fit sensors maintain precise fuel mapping under heavy load to safeguard your catalytic converters and restore reliable torque output.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67910022299896,"sku":"DS-E1WOV7BPS","price":104.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/o2-15464671674616-main-clean.jpg?v=1793395752","url":"https:\/\/performancechiptuning.com\/de\/products\/o2-oxygen-sensor-upstream-downstream-for-dodge-ram-2500-2003-2010-5-7l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}