Denso 234-9051 Oxygen Sensor | Genuine OEM Replacement | OE Fit for Toyota & Lexus

Denso 234-9051 Oxygen Sensor
Genuine OEM Air/Fuel Ratio Sensor for Toyota & Lexus

Restore factory performance and efficiency with the Denso 234-9051 Oxygen Sensor. This genuine OEM sensor ensures precise air-fuel ratio monitoring for reduced emissions, better fuel economy, and smoother engine operation — no modifications required.

Key Features:

• Genuine Denso 234-9051 Oxygen Sensor
• OEM fit and performance
• Restores proper air-fuel mixture for better MPG
• Reduces emissions & improves engine efficiency
• Durable construction for long service life

Vehicle Compatibility:

• Toyota: Camry, Corolla, Tacoma, Tundra, Highlander
• Lexus: RX350, ES350, GX460, IS350

Direct-fit OEM replacement — always confirm with your VIN.

Cross Reference:
Toyota/Lexus OEM 89465-0E010 | Bosch 17019 | NGK/NTK 24682 | Standard SG1840

What's Included:
1x Denso 234-9051 Oxygen Sensor with factory connector (plug-and-play)

Why Buy From Torque Treasure:
100% Genuine OEM Denso Sensors | Trusted Toyota/Lexus Compatibility | Competitive Prices & Fast USA Shipping | Secure Shopping

🔥 Restore fuel efficiency and performance — order today for fast shipping and guaranteed fitment.

❓ Quick FAQ

Is this a standard O2 sensor, and where does it go?
It's actually a wide-band Air/Fuel (A/F) Ratio Sensor for upstream placement only (before the catalytic converter) — it measures a precise ratio range rather than simple rich/lean switching, and won't work as a downstream replacement.

What are signs of a failing sensor?
Almost always triggers a Check Engine light with codes like P0171, P0172, or P2195/P2196. Watch for reduced fuel economy, rough idle, and acceleration hesitation — left unaddressed, it can damage the catalytic converter.

How do I replace it?

1. Disconnect the battery and locate the upstream sensor near the exhaust manifold.
2. Release the electrical connector by pressing the locking tab.
3. Unscrew the old sensor using a slotted O2 sensor socket and breaker bar.
4. Inspect/clean the exhaust bung threads; use a thread chaser if needed.
5. Apply anti-seize (avoiding the sensor tip) and hand-thread the new sensor in.
6. Torque to 30 lb-ft, or hand-tighten plus an additional 1/2–2/3 turn.
7. Route the wiring harness, reconnect it, then reconnect the battery and verify the Check Engine light stays off.