Wobiwina Oxygen O2 Sensor for Toyota Camry Avalon RAV4 Lexus ES300h 2.5L — OE‑Style Direct Fit, Upstream/Downstream

This direct‑fit oxygen sensor from Wobiwina is engineered as an OE‑style replacement for selected Toyota Camry, Avalon, RAV4 and Lexus ES300h models with the 2.5L engine. It uses the same mounting, connector interface and sensing element form factor as original equipment, making installation straightforward for DIYers and professional technicians. Before ordering, confirm the year, engine size and part number to ensure exact compatibility with your vehicle.

Which vehicles does this Wobiwina O2 sensor fit?

The sensor is built to match OE specifications for several 2.5L Toyota and Lexus models across recent years. It is compatible with both upstream and downstream locations depending on the factory part number for your car.

• Camry: 2018–2023, 2.5L engines
• Avalon: 2020–2022, 2.5L engines
• RAV4: 2019–2024, 2.5L engines
• Lexus ES300h: 2019–2020, 2.5L hybrid engines
• Factory reference numbers: 234-9304 and 234-9307 — verify against your vehicle

How do I know if this is the correct part for my car?

Confirm fitment by cross‑checking your vehicle year, engine displacement, and the original part number stamped on the old sensor or listed in your service manual. The Wobiwina unit is intended as an OE‑style replacement, so matching these details ensures plug‑and‑play compatibility.

• Check your vehicle’s year and 2.5L engine designation
• Compare OEM numbers: 234-9304 or 234-9307
• Match connector pin count and wiring length visually if possible
• Contact a technician if unsure before purchase

What should I expect during installation?

Installation follows the same steps as replacing any threaded oxygen sensor: locate the sensor in the exhaust system, disconnect the electrical connector, remove the old sensor and install the new one with the correct torque. Use anti‑seize on threads if not preapplied and ensure a clean connector connection to prevent signal issues.

• Typical tools: O2 sensor socket, ratchet, anti‑seize (if needed)
• Installation time: usually 30–60 minutes depending on access
• Check for CEL codes and clear after replacement if applicable
• Recheck for exhaust leaks and secure wiring harness routing

What are the key features and specifications?

The Wobiwina sensor is offered as an OE part alternative with reliable sensing performance, correct connector fit, and the same threaded mounting. It’s important to verify part numbers and model fitment before ordering to avoid returns.

• OE part-style construction for direct fit
• Reference part numbers: 234-9304, 234-9307
• Designed for 2.5L Camry, Avalon, RAV4 and Lexus ES300h models listed
• Sold as a single sensor — check bank/location required for full system

Who this is for: drivers and mechanics who need a reliable, OE‑style oxygen sensor replacement for 2.5L Toyota and Lexus models in the listed years. It’s suitable for routine maintenance, diagnosis repairs when an OBD‑II oxygen sensor failure is indicated, and for anyone replacing a worn or contaminated sensor to restore accurate exhaust oxygen readings. Always verify vehicle compatibility and part numbers before purchase to ensure correct fit and function.