{"product_id":"oxygen-sensors-for-chrysler-300-2011-2013-3-6l-upstream-downstream","title":"Oxygen Sensors for Chrysler 300 (2011-2013) 3.6L Upstream \u0026 Downstream","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Replacement Oxygen Sensor Set for 2011-2013 Chrysler 300 (LD)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The complete 4-piece oxygen sensor kit monitors pre- and post-catalytic exhaust gas concentrations on the 2011-2013 Chrysler 300 to restore closed-loop fuel trim accuracy and resolve catalytic efficiency fault codes.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Chrysler 300 Sensor Degradation\u003c\/h3\u003e\n\u003cp\u003eFactory zirconia O2 sensors on the \u003cstrong\u003ePentastar 3.6L\u003c\/strong\u003e degrade over thermal duty cycles and exhaust soot exposure. Over time, the internal sensing elements suffer from silica contamination and thermal fatigue, leading to sluggish voltage response rates. This delay prevents the powertrain control module (PCM) from properly managing stoichiometric air-fuel ratios, resulting in rich or lean fuel trim drift, engine hesitation, reduced gas mileage, and diagnostic trouble codes such as P0130 through P0161, or false-positive catalyst efficiency codes like P0420 and P0430.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive set provides both upstream air-fuel ratio monitors and downstream catalyst diagnostic sensors built with planar ceramic cores and rapid-heating internal elements. Each sensor features double-laser-welded stainless steel bodies to guard against exhaust heat stress and moisture intrusion. Designed to replace OEM reference numbers \u003cstrong\u003e234-4545\u003c\/strong\u003e and \u003cstrong\u003e234-4547\u003c\/strong\u003e, these units feature pre-calibrated resistance, exact-length high-temp harness sheathing, and OE-style 4-pin weather-pack connectors for a plug-and-play installation without wire splicing or pin depinning on the \u003cstrong\u003eLD\u003c\/strong\u003e chassis.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2 Upstream Oxygen Sensors\u003c\/li\u003e\n  \u003cli\u003e2 Downstream Oxygen Sensors\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;\"\u003e2011-2013 Chrysler 300\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;\"\u003ePentastar V6 (3.6L) \/ LD\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;\"\u003e292 hp \/ 260 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;\"\u003e234-4545, 234-4547\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\u003e2011 Chrysler 300 3.6L V6 (All Trims)\u003c\/li\u003e\n  \u003cli\u003e2012 Chrysler 300 3.6L V6 (All Trims)\u003c\/li\u003e\n  \u003cli\u003e2013 Chrysler 300 3.6L V6 (All Trims)\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 LD 300?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2011-2013 Chrysler 300 equipped with the \u003cstrong\u003ePentastar 3.6L\u003c\/strong\u003e engine.\u003c\/p\u003e\n\n\u003ch4\u003eShould anti-seize be applied to the threads during installation?\u003c\/h4\u003e\n\u003cp\u003eApply high-temperature anti-seize exclusively to the sensor threads while keeping the sensing tip completely clean, and clear stored PCM fault codes post-install.\u003c\/p\u003e\n\n\u003ch3\u003eThe Chrysler Caliber\u003c\/h3\u003e\n\u003cp\u003eEngineered to handle domestic sedan muscle and long-distance touring demands, this replacement set restores precise throttle responsiveness, prevents bore washing from rich fuel conditions, and preserves catalytic converter longevity.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67895975837944,"sku":"DS-ET4478IMQ","price":88.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/oxygen-sensors-for-chrysler-300-2011-2013-3-6l-upstream-downstream-1.jpg?v=1793289934","url":"https:\/\/performancechiptuning.com\/products\/oxygen-sensors-for-chrysler-300-2011-2013-3-6l-upstream-downstream","provider":"Performance Chip Tuning","version":"1.0","type":"link"}