Wobiwina O2 Sensor Set for Ford Focus & Fusion — 2PCS Upstream & Downstream, OE 2345068/2344575

The Wobiwina Oxygen O2 Sensor 234-5068 / 234-4575 is a two-piece upstream and downstream replacement set designed to restore accurate exhaust oxygen readings for compatible Ford Focus and Ford Fusion models.

When an engine management system reports an O2 sensor fault or your vehicle shows reduced fuel efficiency and rough idling, replacing both upstream and downstream sensors with matching parts helps the engine control unit regain reliable air-fuel feedback. This Wobiwina set includes two sensors manufactured to fit the OE part numbers 2345068 and 2344575 and is intended for certain Ford Focus and Ford Fusion years and engine sizes. Always verify vehicle year, engine displacement, and part numbers before purchase to confirm fitment.

Which Ford models and engines use these Wobiwina O2 sensors?

These sensors are built to replace OE numbers 2345068 and 2344575 for specific Ford vehicles. They fit the 2012–2018 Ford Focus with the 2.0L engine and the 2013–2014 Ford Fusion with the 1.6L engine. Checking your vehicle’s VIN, engine code, or the existing sensor’s part number ensures correct selection.

• Compatible: Ford Focus 2012–2018, 2.0L engines
• Compatible: Ford Fusion 2013–2014, 1.6L engines
• Replaces OE part numbers: 2345068 and 2344575
• Includes a pair: upstream (pre-catalytic) and downstream (post-catalytic) sensors

How will replacing both upstream and downstream sensors help vehicle performance?

Replacing both sensors at the same time gives the engine control unit consistent, accurate oxygen readings from before and after the catalytic converter. Consistent sensor data supports stable fuel trims and can eliminate fault codes related to sensor performance. This is particularly useful when diagnostics indicate aged or mismatched sensors.

• Restores proper air-fuel feedback to the ECU
• Reduces risk of recurring O2-related fault codes
• Supports smoother idle and more consistent fuel trims
• Prevents performance issues caused by a single worn sensor

What should I check before buying these O2 sensors?

Confirm that your vehicle’s model year, engine displacement, and OE part number match the listing. Inspect the existing sensor’s connector and wire length to ensure the replacement will reach and plug in without strain. If you have aftermarket exhaust modifications, verify there are no fitment conflicts.

• Match OE numbers: 2345068 or 2344575 on old sensor
• Verify vehicle year and engine (Focus 2.0L, Fusion 1.6L)
• Check connector type and harness routing length
• Review any custom exhaust parts that may obstruct installation

How difficult is installation and what tools do I need?

Replacing O2 sensors is a straightforward moderate-difficulty job for most DIYers with basic automotive tools. You’ll typically need an oxygen sensor socket or a 7/8" wrench, penetrating oil for seized threads, and possibly a jack and stands to access the sensor locations. If sensors are hard to reach or bolts are corroded, professional installation may be faster.

• Common tools: oxygen sensor socket or 7/8" wrench, torque wrench
• Penetrating oil recommended for rusty threads
• Disconnect battery before unplugging sensor connectors
• Torque to manufacturer specs to avoid thread damage

Who is this for: This Wobiwina two-piece O2 sensor kit suits owners of the specified Ford Focus and Ford Fusion models who need a direct-fit replacement for faulty upstream and downstream oxygen sensors. It’s a good option for DIY mechanics and independent shops seeking an OE-part-number-compatible sensor pair for emissions and fuel-trim troubleshooting. If you are unsure about fitment, verify your vehicle information or consult a technician before ordering.