QIYBONE 4PCS Oxygen O2 Sensor Kit for Jeep Dodge Chrysler Ram - Upstream & Downstream Replacement 234-4587 / 250-24253

QIYBONE 4PCS oxygen sensor kit replaces upstream and downstream O2 sensors (234-4587 / 250-24253) for many Jeep, Dodge, Chrysler and Ram models, restoring accurate air-fuel monitoring and helping the engine control system run as designed.

This four-piece QIYBONE sensor set includes both upstream (pre-catalytic converter) and downstream (post-catalytic converter) oxygen sensors manufactured to match common OE fitment and wiring for a wide range of Chrysler-family vehicles from 2001 through 2023. Each sensor is built to work with existing harnesses and connector types so you can swap faulty sensors without major wiring changes. The kit is ideal when multiple sensors show age-related wear or when a check-engine code indicates sensor failure.

Which vehicles and engines does this QIYBONE kit fit?

The set covers a broad list of Chrysler, Dodge, Jeep and Ram applications across many model years and engine sizes. Compatibility spans popular models such as Grand Cherokee, Wrangler, Charger, Challenger, Caravan, 300 and multiple Ram trucks, including several V6 and V8 engines. Always confirm fitment with your vehicle’s year, engine displacement and OEM part numbers.

• Jeep: Grand Cherokee, Wrangler, Liberty, Cherokee, Compass, Patriot, Commander (various years and engine sizes listed)
• Dodge: Charger, Challenger, Durango, Caravan, Dakota, Journey, Avenger and others across 2000–2023
• Chrysler & Ram: 300, Town & Country, Pacifica, Ram 1500/2500/3500 and select models
• Cross-fit: select Volkswagen Routan and Mitsubishi Raider models where specified

How do upstream and downstream sensors differ, and why replace both?

Upstream sensors measure oxygen in exhaust before the catalytic converter to help the engine control unit set the fuel mixture; downstream sensors monitor converter efficiency after the catalyst. Replacing both minimizes diagnostic confusion, ensures consistent readings across the exhaust system, and reduces the chance of a residual code from an older sensor.

• Upstream: controls fuel trim and engine performance
• Downstream: checks catalytic converter function
• Replacing both reduces mismatch and repeated diagnostics
• Sold as a matched set for wiring and connector compatibility

What should I expect during installation and maintenance?

Installation is straightforward for anyone comfortable with basic hand tools and working beneath a vehicle. Sensors thread into factory ports and connect to original harness plugs; some models may require penetrating fluid or a specialized sensor socket. After installation, clear any stored engine codes and verify proper operation with a scan tool or test drive.

• Uses OE-style threads and connectors for direct fit
• May need anti-seize or sensor socket for removal/installation
• Clear OBD codes after replacing to confirm repair
• Inspect wiring harnesses for heat or abrasion damage

Which reference and part numbers does this set replace?

This QIYBONE kit is supplied to match a long list of OE and aftermarket reference numbers so it can substitute common factory parts. Cross-reference the listed numbers with your vehicle’s existing sensor part numbers to ensure a correct match before purchase.

• Includes cross-references such as 234-4587, 250-24253 and OS5089
• Also compatible with numerous factory numbers used by Chrysler and Mopar
• Check your vehicle’s service manual or current sensor label for exact match
• Contact seller with VIN for fitment confirmation if unsure

Who this is for: This QIYBONE 4-piece oxygen sensor kit is aimed at owners and mechanics working on mid-2000s through current Chrysler-family vehicles who need a matched upstream/downstream replacement set. It’s appropriate for DIYers comfortable under the vehicle, independent shops replacing multiple sensors at once, and fleet operators who prefer replacing all sensors to prevent recurring codes. Verify engine and model year compatibility before ordering.