Air / Fuel Ratio Sensor for 2013-2018 Mazda CX-5 & More - DENSO 234-5059

DENSO Auto Parts 234-5059 air / fuel ratio sensor for the 2013-2016 Mazda CX-5 4-cylinder 2.0L, the 2014-2018 CX-5 4-cylinder 2.5L and other vehicles reads the air-fuel ratio in the exhaust and reports it to the engine computer. It is a direct-fit upstream sensor.

• Laser-welded stainless housing resists corrosion
• PTFE filter blocks contaminants under harsh engine conditions
• Dual-layer protection shields the ceramic element for fast response times
• Heated wide-band sensor with 5 wires

Quick facts

• Part: DENSO Auto Parts 234-5059 air / fuel ratio sensor
• Fits: the 2013-2016 Mazda CX-5 4-cylinder 2.0L, the 2014-2018 CX-5 4-cylinder 2.5L and other vehicles
• Position: Upstream
• Condition: New

A worn air / fuel ratio sensor can show up as a check engine light, rough running or poorer fuel economy, though each of these can have other causes. Before replacing it, look for the cause: with the engine off and cool, check the harness and connector for chafed insulation or corrosion.

Fits

It is a direct-fit replacement for the 2014-2018 Mazda 3 4-cylinder 2.0L or 2.5L and the 2014-2018 Mazda 3 Sport 4-cylinder 2.0L or 2.5L, and each takes one sensor. Driving something else? Look up your car's year, make and model in the "Vehicles it fits" section.

Specifications