TINJO Oxygen Sensor Pair for Chevy Cruze/Sonic/Trax 1.4L (234-4528 & 234-4529) — Upstream & Downstream, Direct-Fit

TINJO upstream and downstream oxygen sensor pair (234-4528 & 234-4529) is a direct-fit replacement set for Chevrolet Cruze, Sonic, and Trax 1.4L engines that restores accurate exhaust sensing and helps maintain efficient engine operation.

This two-piece O2 sensor kit is engineered as a like-for-like replacement for factory part numbers 234-4528 and 234-4529. Each sensor uses high-temperature materials, a multi-layer protection system, and a PTFE filter to resist contamination and respond quickly to exhaust changes. The plug-and-play connectors match OEM fittings so installation is straightforward for mechanics and DIYers alike.

How does this sensor pair affect engine performance?

Oxygen sensors report exhaust oxygen levels to the engine control unit so fuel trim and combustion can be adjusted. Replacing aging or failing sensors helps the ECU make correct fuel-air adjustments, which can stabilize idle, reduce misfires, and support consistent throttle response.

• Restores accurate air/fuel feedback for ECU adjustments
• Helps prevent long-term catalytic converter stress
• Improves combustion stability and reduces rough idle

Are these sensors a direct fit for my Chevrolet model?

The set is manufactured to match OE specifications for Chevrolet Cruze 2011–2015 (1.4L L4), Chevrolet Sonic 2012–2020 (1.4L L4), and Chevrolet Trax 2012–2020 (1.4L L4). They are designed as direct replacements to simplify swap-out without modification, but confirmation of connector shape and part number is recommended before purchase.

• Replaces OEM part numbers 234-4528 and 234-4529
• Fits specified Cruze, Sonic, and Trax 1.4L model years
• Plug-and-play connector to match original wiring harness

What features make these sensors durable and responsive?

TINJO builds these sensors using corrosion-resistant stainless steel housings and high-temp resistant internals to ensure rapid signal response and long service life. Layers like an aluminum oxide trap and a PTFE filter reduce fouling from contaminants, helping the sensor hold calibration under harsh exhaust conditions.

• Stainless steel housing for corrosion resistance
• Aluminum oxide trap and PTFE filter to limit contamination
• Manufactured to meet original equipment performance standards

What should I check before installation?

Verify vehicle compatibility by checking the model year, engine size (1.4L L4), and the connector shape against your original sensor. Inspect wiring for heat damage and ensure the replacement sensors are installed with proper torque and anti-seize on threads if required.

• Confirm part numbers and connector match your OEM sensor
• Inspect wiring harness and replace damaged clips or boots
• Use correct torque and anti-seize as appropriate during fitting

Who is this for: This sensor set is aimed at owners and mechanics working on Chevrolet Cruze, Sonic, or Trax with the 1.4L engine who need a reliable, direct-fit replacement for failing upstream or downstream O2 sensors. It suits DIY enthusiasts who want an OEM-style swap and professional shops that require dependable, quality components for routine exhaust diagnostics and repair.