{"product_id":"o2-oxygen-sensor-upstream-downstream-for-ford-f-150-1997-2008-4-2l-4-6l-5-4l","title":"O2 Oxygen Sensor Upstream Downstream for Ford F-150 (1997-2008) 4.2L, 4.6L, 5.4L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit 4-Piece Oxygen Sensor Kit for 1997-2008 Ford F-150 (PN96 \/ P221)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The 4-piece oxygen sensor kit restores factory closed-loop AFR monitoring and catalytic efficiency on the 1997-2008 Ford F-150 to eliminate check engine lights and normalize fuel trim tables.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Ford F-150 Sensor Degradation \u0026amp; Thermal Fatigue\u003c\/h3\u003e\n\u003cp\u003eFactory O2 sensors on high-mileage \u003cstrong\u003ePN96\u003c\/strong\u003e and \u003cstrong\u003eP221\u003c\/strong\u003e platforms degrade through continuous exhaust gas contamination, silica poisoning, and repeated thermal shock. As the internal porous ceramic element fouls, signal response slows, causing the PCM to over-compensate with rich or lean fuel trims. This latency leads to unburned hydrocarbons overheating catalytic converters, fouled spark plugs, and recurring diagnostic trouble codes such as P0135, P0141, P0171, and P0420.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered to OEM switching thresholds, these sensors utilize high-grade zirconia solid-electrolyte sensing elements protected by double-layered, laser-welded stainless steel protective sleeves. Integrated fast-acting ceramic internal heaters reduce light-off time, pulling the PCM into closed-loop operation rapidly on cold starts. Direct-fit weather-pack harness connectors prevent signal degradation and eliminate wire splicing.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e4x Direct-fit Oxygen Sensors (Pre-cat Upstream and Post-cat Downstream configuration)\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: solid font-size: min-width:\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;\"\u003e1997-2008 Ford F-150\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;\"\u003e\n\u003cstrong\u003e4.2L Essex V6\u003c\/strong\u003e, \u003cstrong\u003e4.6L \/ 5.4L Triton V8\u003c\/strong\u003e \/ \u003cstrong\u003ePN96 \/ P221\u003c\/strong\u003e\n\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;\"\u003e202–300 hp \/ 252–365 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;\"\u003e\n\u003cstrong\u003e234-4402\u003c\/strong\u003e, \u003cstrong\u003e234-4403\u003c\/strong\u003e, \u003cstrong\u003e234-4609\u003c\/strong\u003e, \u003cstrong\u003e234-4610\u003c\/strong\u003e, \u003cstrong\u003e234-4870\u003c\/strong\u003e, \u003cstrong\u003eES20014\u003c\/strong\u003e, \u003cstrong\u003eES20040\u003c\/strong\u003e, \u003cstrong\u003eES20064\u003c\/strong\u003e, \u003cstrong\u003eES20104\u003c\/strong\u003e, \u003cstrong\u003eES20316\u003c\/strong\u003e, \u003cstrong\u003eES20318\u003c\/strong\u003e, \u003cstrong\u003eES20151\u003c\/strong\u003e, \u003cstrong\u003eES20328\u003c\/strong\u003e, \u003cstrong\u003eSG1801\u003c\/strong\u003e, \u003cstrong\u003eSG1802\u003c\/strong\u003e, \u003cstrong\u003eSG1803\u003c\/strong\u003e, \u003cstrong\u003eSG1806\u003c\/strong\u003e, \u003cstrong\u003eSG1807\u003c\/strong\u003e, \u003cstrong\u003eSG1808\u003c\/strong\u003e, \u003cstrong\u003eSG1813\u003c\/strong\u003e, \u003cstrong\u003eSG1814\u003c\/strong\u003e, \u003cstrong\u003eSG726\u003c\/strong\u003e, \u003cstrong\u003eSG459\u003c\/strong\u003e, \u003cstrong\u003e234-4001\u003c\/strong\u003e, \u003cstrong\u003e234-4046\u003c\/strong\u003e, \u003cstrong\u003e234-4070\u003c\/strong\u003e, \u003cstrong\u003e234-4071\u003c\/strong\u003e, \u003cstrong\u003e234-4127\u003c\/strong\u003e, \u003cstrong\u003e234-4401\u003c\/strong\u003e, \u003cstrong\u003e34-4127\u003c\/strong\u003e\n\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\u003e1997-2008 Ford F-150 4.2L V6\u003c\/li\u003e\n  \u003cli\u003e1997-2008 Ford F-150 4.6L V8\u003c\/li\u003e\n  \u003cli\u003e1997-2008 Ford F-150 5.4L V8\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 PN96 \/ P221 F-150?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 1997-2008 Ford F-150 equipped with the \u003cstrong\u003e4.2L Essex\u003c\/strong\u003e, \u003cstrong\u003e4.6L Triton\u003c\/strong\u003e, or \u003cstrong\u003e5.4L Triton\u003c\/strong\u003e engine.\u003c\/p\u003e\n\n\u003ch4\u003eDo these sensors require wire cutting or splicing during installation?\u003c\/h4\u003e\n\u003cp\u003eNo, these are direct-fit units supplied with factory-style locking terminal plugs for plug-and-play installation.\u003c\/p\u003e\n\n\u003ch3\u003eThe Ford Towing \u0026amp; Hauling Standard\u003c\/h3\u003e\n\u003cp\u003eMaintained stoichiometric balance is vital under heavy payload and towing duty cycles. By replacing worn upstream and downstream oxygen sensors together, you protect the exhaust train from excessive EGTs, safeguard catalytic substrate efficiency, and ensure stable engine performance under heavy load.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67551253037304,"sku":"DS-EM59CCGP9","price":79.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/o2-oxygen-sensor-upstream-downstream-for-ford-f-150-1997-2008-4-2l-4-6l-5-4l-1.jpg?v=1790794130","url":"https:\/\/performancechiptuning.com\/fr\/products\/o2-oxygen-sensor-upstream-downstream-for-ford-f-150-1997-2008-4-2l-4-6l-5-4l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}