{"product_id":"234-4076-234-4078-air-fuel-ratio-sensor-lambda-o2-oxygen-sensor-for-jeep-cherokee-wrangler-4-0l-1996-1999-upstream-downstream","title":"Air Fuel Ratio Sensor Upstream And Downstream Kit for Jeep 4.0L Cherokee Wrangler","description":"\u003cdiv\u003e\n\u003cp\u003eUpgrade your Jeep’s fuel management with a complete Air Fuel Ratio (AFR) sensor set for the 4.0L engine family. The Jeep Cherokee Wrangler 4.0L Air Fuel Ratio Sensor Upstream, Downstream kit includes both upstream and downstream AFR sensors, engineered to monitor and optimize the air–fuel mix for superior performance, efficiency, and emission compliance. The upstream sensor reads before the catalytic converter to inform the engine control unit about the exhaust composition, while the downstream sensor confirms catalytic converter efficiency, helping your vehicle maintain peak combustion control and smoother idle. Specifically designed for 1996–1999 Jeep Cherokee, Grand Cherokee, and Wrangler 4.0L models, this pair restores accurate AFR readings and improves throttle response, fuel economy, and overall drivability.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003ePart numbers and compatibility you can trust\u003c\/strong\u003e\u003cbr\u003e\nUpstream: 234-4076 with OEM numbers including ES20043, 2131375, 2131371, 4606421, 4606620, 4686222, 5269744, 56041212 and related variants.\u003cbr\u003e\nDownstream: 234-4078 with OEM numbers including SG1695, SG1820, 5033081AA, 56041056, 56041219, 13138 13440, 2344078, 23088 and related variants.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWhat’s included\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e2 sensors included (Upstream and Downstream)\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eBenefits \u0026amp; Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRestore EFI stability and efficiency\u003c\/strong\u003e: Accurate AFR readings help the engine run consistently, improving throttle response and fuel economy on 4.0L Jeeps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImprove emissions performance\u003c\/strong\u003e: Properly functioning AFR sensors ensure the catalytic converter operates correctly, helping you meet emissions standards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePractical maintenance advice\u003c\/strong\u003e: When replacing AFR sensors, inspect related wiring and connectors for wear and clean or replace as needed to maximize sensor life.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eProduct specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensor type:\u003c\/strong\u003e Magnetic Induction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensor construction:\u003c\/strong\u003e Heating Type\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasuring range:\u003c\/strong\u003e Upstream \u0026amp; Downstream\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM numbers:\u003c\/strong\u003e 234-4076 (Upstream), 234-4078 (Downstream)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart numbers (examples):\u003c\/strong\u003e Upstream variants ES20043, 2131375, 2131371, 4606421, 4606620, 4686222, 5269744, 56041212; Downstream variants SG1695, SG1820, 5033081AA, 56041056, 56041219, 13138 13440, 2344078, 23088, SG466\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Mainland China\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel coverage:\u003c\/strong\u003e Jeep Cherokee Wrangler 4.0L (1996–1999) including Cherokee, Grand Cherokee and Wrangler variants listed in the fitment notes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRepeatability:\u003c\/strong\u003e For Jeep Cherokee Wrangler 4.0L 1996–1999\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1 YEAR (Replacement Warranty)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNotes:\u003c\/strong\u003e Before ordering, please check product pictures, accessories, and part numbers. If you are unsure, please send us a product picture or part number before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWarnings\/Reminders\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBefore ordering, please check product pictures, accessories, and part numbers.\u003c\/li\u003e\n\u003cli\u003eIf you are unsure, please send us a product picture or part number before ordering.\u003c\/li\u003e\n\u003cli\u003eTo avoid wrong orders, read the purchase guide carefully. Thank you!\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWarranty and certification\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAll electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eTrust and reliability\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eProviding quality and trusted service since 2002 at intercyprus.com.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"InterCyprus Trading Ltd","offers":[{"title":"Default Title","offer_id":52494959018326,"sku":"1005010098488309-Default Title","price":63.68,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0530\/0604\/1274\/files\/S95c5315fa5d74e03991eed1d774d557a7.webp?v=1770062781","url":"https:\/\/www.intercyprus.com\/products\/234-4076-234-4078-air-fuel-ratio-sensor-lambda-o2-oxygen-sensor-for-jeep-cherokee-wrangler-4-0l-1996-1999-upstream-downstream","provider":"InterCyprus Trading Ltd","version":"1.0","type":"link"}