O2 Oxygen Sensor Upstream Downstream for Ford F-150 (2015-2017) 2.7L

Direct-Fit Oxygen Sensor Set for 2015-2017 Ford F-150 (P552)

What it Does: The 4-piece oxygen sensor kit monitors pre- and post-catalyst exhaust stoichiometry on the 2015-2017 F-150 to restore closed-loop fuel trims, optimize air-fuel ratios, and eliminate emission-related check engine lights.

The Stock Ford F-150 Sensor Degradation

Under continuous thermal cycling in the P552 chassis, factory lambda sensors deteriorate over time. The high exhaust temperatures and direct-injection soot from the twin-turbocharged 2.7L Nano EcoBoost engine cause carbon contamination and silica poisoning on the internal sensing elements. As response times slow, the powertrain control module (PCM) struggles to manage transient fueling. This leads to rich/lean bias, sluggish throttle response, reduced fuel economy, catalytic converter strain, and diagnostic trouble codes such as P0135 or P0141.

The Engineering Solution

This full 4-sensor replacement kit restores factory closed-loop feedback latency. Constructed with dual-layered stainless steel protective sleeves, internal ceramic heaters, and refined zirconia planar elements, these sensors resist thermal shock and soot accumulation. Pre-terminated OEM-spec harnesses and factory-calibrated connectors ensure direct plug-and-play installation without wire splicing, matching the signal output and heater resistance profile of OE parts 234-4968, 234-5173, and 234-5174.

What's Included

• 2x Upstream Oxygen (O2) Sensors
• 2x Downstream Oxygen (O2) Sensors

Technical Specifications

Compatibility

• 2015 Ford F-150 2.7L V6 EcoBoost (XL, XLT, Lariat)
• 2016 Ford F-150 2.7L V6 EcoBoost (XL, XLT, Lariat)
• 2017 Ford F-150 2.7L V6 EcoBoost (XL, XLT, Lariat)

Frequently Asked Questions & Fitment Warnings

Does this fit the P552 F-150?

Yes, this is a direct fit for the 2015-2017 Ford F-150 equipped with the 2.7L Nano EcoBoost engine. This kit does not fit 3.5L EcoBoost, 3.5L Cyclone NA, or 5.0L Coyote V8 variants.

Do these sensors require wire splicing or PCM recalibration?

No, these direct-fit sensors come complete with factory-pinned electrical plugs and direct-thread bungs for quick installation without aftermarket tuning or wire modifications.

The Ford Towing Standard

Heavy towing and high payload demands require stable closed-loop air-fuel control to maintain exhaust gas temperatures within safe operational limits. Refreshing the full sensor array protects your catalytic converters and maintains reliable torque delivery under load.