Ford Edge / Explorer / Lincoln MKX O2 Sensor Set of 4, 3.5L 3.7L V6, 234-5038

This Ford Edge O2 sensor set includes all four oxygen sensors for the 3.5L and 3.7L V6: two upstream 234-5038 and two downstream 234-4489. It fits the Ford Edge and Explorer, Lincoln MKX, Mazda 6 and Mazda CX-9 from around 2011 to 2015.

Specifications

• Upstream: 234-5038 (x2)
• Downstream: 234-4489 (x2)
• Package: 4 oxygen sensors

Application

• Ford Edge 3.5L and 3.7L, 2011-2014
• Ford Explorer 3.5L, 2011-2012
• Lincoln MKX 3.7L, 2012-2014
• Mazda 6 3.7L, 2011-2013
• Mazda CX-9 3.7L, 2011-2015

Fitting

The rear-bank upstream sensor on these transverse V6 engines sits near the firewall and can be hard to reach. A slotted O2 sensor socket and a long extension help. Clear the codes afterwards. For more, see the oxygen sensor article on Wikipedia.

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