{"product_id":"oxygen-sensors-for-jeep-grand-cherokee-2014-2019-3-6l-upstream-downstream","title":"Oxygen Sensors for Jeep Grand Cherokee (2014-2019) 3.6L Upstream \u0026 Downstream","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Oxygen Sensor Set for 2014-2019 Jeep Grand Cherokee (WK2)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Oxygen Sensor Set replaces all four factory monitoring probes on the 2014-2019 Grand Cherokee to restore closed-loop fuel trim accuracy, engine responsiveness, and catalytic converter monitoring.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Jeep Grand Cherokee Sensor Degradation\u003c\/h3\u003e\n\u003cp\u003eOver extended heat cycles, factory zirconium dioxide sensing elements inside the \u003cstrong\u003eWK2\u003c\/strong\u003e exhaust stream succumb to thermal shock, carbon soot, and silica poisoning. On the \u003cstrong\u003e3.6L Pentastar V6\u003c\/strong\u003e, aged upstream probes become sluggish, reporting false lean signals to the powertrain control module (PCM). This latency corrupts short-term fuel trims, forcing excessive fuel dumping, unburned hydrocarbons, reduced fuel economy, and catalytic converter overheating. Concurrently, degraded downstream sensors trigger persistent 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, resulting in failed emissions tests and intermittent engine hesitation under load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis 4-piece replacement set resolves closed-loop fuel calculation errors by utilizing fast-acting, high-temperature ceramic sensing cores shielded by dual-layer stainless steel protective housings. Engineered to OE electrical resistance specifications, each sensor features factory-calibrated 4-pin plug-in pigtails, correct harness lengths, and precision-cut M18x1.5 threads for an airtight seal in factory exhaust bungs. Pre-treated thread sections simplify installation and prevent thread galling in high-heat manifolds. By swapping both upstream wideband\/air-fuel sensors and downstream catalyst monitors simultaneously, you establish uniform cross-bank response times, eliminate CEL illumination, and protect the downstream emissions catalysts from raw fuel washout.\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;\"\u003e2014-2019 Jeep Grand Cherokee\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;\"\u003e3.6L Pentastar V6 \/ WK2\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;\"\u003e290-295 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\u003e2014-2019 Jeep Grand Cherokee 3.6L V6 (All trim levels including Laredo, Limited, Overland, Summit, and Trailhawk)\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 WK2 Grand Cherokee?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2014-2019 Jeep Grand Cherokee equipped with the \u003cstrong\u003e3.6L Pentastar V6\u003c\/strong\u003e engine.\u003c\/p\u003e\n\n\u003ch4\u003eDo I need special tools or anti-seize during installation?\u003c\/h4\u003e\n\u003cp\u003eUse a dedicated 7\/8-inch (22mm) oxygen sensor socket, apply anti-seize to the threads only while avoiding the sensing tip, and route wiring away from direct exhaust contact.\u003c\/p\u003e\n\n\u003ch3\u003eThe Jeep Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to endure the rigorous thermal cycling of trail exploration and heavy-load towing, these sensors preserve the powertrain durability and factory emissions compliance of your Grand Cherokee.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67895979016440,"sku":"DS-E2QQQN7DQ","price":115.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/oxygen-sensors-for-jeep-grand-cherokee-2014-2019-3-6l-upstream-downstream-1.jpg?v=1793290066","url":"https:\/\/performancechiptuning.com\/de\/products\/oxygen-sensors-for-jeep-grand-cherokee-2014-2019-3-6l-upstream-downstream","provider":"Performance Chip Tuning","version":"1.0","type":"link"}