A worn air/fuel ratio sensor can throw a check engine light and cost fuel economy. This Denso replacement is made for select 2003-2006 Subaru Models and restores accurate exhaust feedback to the engine computer.

Denso 234-9015 Air/Fuel Ratio Sensor Features:

• Fits Select 2003-2006 Subaru Models
• Installs in the upstream sensor position
• Wide-Band sensing element
• Built-in heater brings the element to operating temperature quickly
• 4-wire design
• 20.470 in. wiring harness
• Female connector
• Planar zirconia element responds quickly to changes in oxygen concentration
• Platinum electrodes resist tarnish to hold accuracy over time
• Reads air/fuel ratios across a range of roughly 12:1 to 19:1
• Stainless steel housing resists corrosion and contamination