Product Details and Specs
  • FIT - This rear oxygen sensor is for Land Rover Discovery 2 (1999-2004), Freelander (2002-2005, 2 per car) and Range Rover P38 (1999-2002)
  • TIP - New oxygen sensors can maximize fuel economy, reduce emissions and boost engine performance
  • NOTE - We recommend replacing your oxygen sensors every 60k miles
  • OE REPLACEMENT - Replaces OE part MHK100930

Discovery 2 models require four (4) oxygen sensors. Two of these sensors are mounted behind the Land Rover’s catalytic converter and two in front of it. The rear O2 sensor or post-cat sensors monitor the oxygen content of the exhaust gases leaving your Land Rover’s catalytic converter and confirms the proper operation of the cat. As an oxygen sensor ages, it becomes contaminated, and loses its ability to measure oxygen levels in exhaust gases. This typically results in a drop in fuel economy and a “check engine” light warning on your Rover’s dash.

  • Free 1-5 Day DeliveryMost orders usually arrive on your doorstep in 3 days or less, for free.
  • Hassle-Free ReturnsNot sure? Don't worry, we offer hassle-free 30 day returns on everything.
  • Low Price GuaranteeWe have the best price on over 11,000 parts, guaranteed. If not, we'll match it.
  • In-House ExpertsQuestions? We have over 40 years of Rover parts experience! Message us.