higherbro Oxygen O2 Sensor Kit for Dodge RAM Jeep Chrysler — 4PC Set (2 Upstream + 2 Downstream), OEM-Style Fit

higherbro 4PCS Oxygen O2 Sensor kit replaces two upstream and two downstream sensors to restore accurate exhaust readings for compatible Dodge, RAM, Jeep, and Chrysler engines.

This complete four-piece replacement set is engineered to match the factory fit and wiring of many Chrysler Group vehicles from the early 2000s through the 2010s. By supplying two upstream (pre-catalytic converter) and two downstream (post-catalytic converter) sensors, the kit helps your vehicle maintain proper air-fuel sensing and emissions monitoring when original sensors fail or age out. Each sensor is supplied with OEM-style connectors and a one-year quality guarantee — verify vehicle compatibility using the "Select Your Vehicle" tool before purchase.

Which vehicles and engines does this higherbro O2 sensor kit fit?

This kit covers a broad range of Dodge, RAM, Jeep, and Chrysler models and engine sizes across multiple model years. It lists compatibility for many Ram 1500/2500/3500, Jeep Grand Cherokee/Wrangler/Liberty, Chrysler 300/Town & Country, and Dodge Grand Caravan models. Always confirm make, model, year and engine displacement before ordering to ensure plug-and-play fit.

• Ram 1500: 2002–2010 (3.7L, 5.7L, 5.9L, 8.3L) and 2011–2012/2018 variants where noted
• Ram 2500/3500/4500: selected 2003–2018 5.7L and 2012–2017 5.7L coverage
• Jeep Grand Cherokee/Wrangler/Liberty: multiple 2005–2020 engine fits including 3.6L, 5.7L, 6.1L, 6.4L
• Chrysler 300/Town & Country and Dodge Grand Caravan: numerous 2005–2021 engine applications

How do upstream and downstream sensors differ and why does the kit include both?

Upstream sensors sit before the catalytic converter and measure exhaust oxygen to help the engine control module adjust fuel delivery. Downstream sensors sit after the catalytic converter and monitor its efficiency. Replacing both sensor types together ensures accurate feedback for fuel trim and emissions diagnostics, reducing the chance of check-engine lights caused by mismatched sensor performance.

• 2x upstream sensors: primary air-fuel feedback for engine control
• 2x downstream sensors: catalytic converter performance monitoring
• Factory-style connectors minimize wiring modifications
• Replacing in matched sets prevents diagnostic confusion

What should I check before installing this sensor set?

Confirm vehicle compatibility, inspect wiring harness condition, and note any active engine codes prior to installation. Also verify sensor bank locations on your engine so you install upstream versus downstream correctly. If the exhaust system or catalyst is damaged, address those issues first to avoid premature sensor failure.

• Use the "Select Your Vehicle" tool to match year, make, model, engine
• Scan for OBD-II trouble codes to identify failing sensor locations
• Inspect harness connectors for corrosion or heat damage
• Replace catalytic or exhaust hardware if visibly compromised

How durable and reliable are higherbro oxygen sensors?

These sensors are built to meet common OEM fit and function standards and include a one-year quality guarantee against defects. They feature sealed housings and OEM-style plugs intended for straightforward replacement. Proper installation and addressing root exhaust issues will maximize service life.

• Sealed sensor bodies to resist exhaust exposure
• OEM-style electrical connectors for plug-and-play installation
• One-year quality guarantee for peace of mind
• Sold as a set of four: 2 upstream + 2 downstream

Who is this for: This higherbro 4PCS O2 sensor kit is aimed at DIY mechanics and professional technicians working on Dodge, RAM, Jeep, or Chrysler vehicles within the listed years and engines who need a matched set of upstream and downstream sensors. It's suited for owners replacing old or failing sensors to clear diagnostic codes, restore fuel-trim responsiveness, or ensure emissions monitoring operates correctly. Always verify compatibility details for your specific vehicle before ordering.