2PCS Oxygen O2 Sensor Set - 89465-50120 (Upstream) & 89465-50130 (Downstream) for Lexus 4.3L 3UZFE Engine

Is your vehicle showing a persistent check engine light, burning more fuel, or delivering sluggish performance? Our 2-piece oxygen sensor set—engineered with OE numbers 89465-50120 and 89465-50130—is the perfect solution. 100% brand new, and backed by a 3-year warranty, it restores optimal engine efficiency and protects your catalytic converter.

🔍 100% Compatible Fitment 

For Lexus 4.3L 3UZFE Engine
- GS Series:GS300: 2000-2006, 8 Cyl 4.3L 3UZFE (UZS161, UZS190)
- GS350: 2007-2008, 8 Cyl 4.3L 3UZFE (UZS190)
- GS400: 2000, 8 Cyl 4.3L 3UZFE (UZS161)
- GS430: 2001-2007, 8 Cyl 4.3L 3UZFE (UZS161, UZS190)
- GS460: 2008, 8 Cyl 4.3L 3UZFE (UZS190)

For LS Series:LS430: 2001-2006, 8 Cyl 4.3L 3UZFE (UCF30)

For SC Series:SC430: 2002-2010, 8 Cyl 4.3L 3UZFE (UZZ40)

📦 Package Contents

- 1 x Upstream (Front) Oxygen Sensor – OE Number 89465-50120

- 1 x Downstream (Rear) Oxygen Sensor – OE Number 89465-50130

✅ Core Product Specifications

- OE/OEM Part Numbers: 89465-50120, 89465-50130

- Type: Oxygen Sensor (Upstream + Downstream)

- Condition: 100% Brand New

- Replacement Type: Direct Plug-In Replacement (No wiring modifications needed)

- Quality Assurance: 100% tested before shipment

- Fitment Type: Direct Replacement (Matches OE dimensions & connector)

- Number of Pieces: 2

🔧 Key Functions: Upstream vs. Downstream

Upstream Sensor (89465-50120)

Installed before the catalytic converter, it detects the air-fuel ratio of the 4.3L 3UZFE engine under different working conditions. Sends real-time data to the ECU (Engine Control Unit) to optimize fuel injection, ensuring precise combustion and maximum power output.

Downstream Sensor (89465-50130)

Installed after the catalytic converter, it mainly monitors whether the three-way catalytic converter works normally. Verifies exhaust purification efficiency to prevent premature converter failure and ensure emission compliance.

🌟 Core Benefits for Your Vehicle

- Reduce Harmful Emissions: Dual sensors work together to optimize exhaust treatment, helping your vehicle meet strict environmental standards and pass emissions tests effortlessly.

- Boost Fuel Economy: Precise air-fuel ratio control cuts unnecessary fuel consumption—save up to 15% on gas costs for your 4.3L V8 engine.

- Enhance Engine Performance: Eliminates rough idling, hesitation, and poor throttle response, restoring the smooth power delivery Lexus is known for.

- Protect Catalytic Converter: Early detection of converter inefficiencies prevents premature failure, avoiding $1,000+ in replacement costs.

⚠️ Important Buying Reminder

To avoid compatibility issues, please confirm three key details before purchasing:

1. Your vehicle model, year, and engine match the fitment list (must be 4.3L 3UZFE engine).

2. The OE number (89465-50120 or 89465-50130) aligns with your old sensor’s part number.

3. The product picture matches your stock sensor (check connector shape and wiring).

If you’re unsure, send us your VIN—we’ll confirm compatibility for free!

🤝 Customer Support You Can Trust

We stand behind our products with dedicated service for vehicle owners:

- 3-Year Warranty: Comprehensive coverage against manufacturing defects—we replace or refund if issues arise.

- Transparent Service: Contact us first before leaving feedback—we resolve problems fast.

✅ Why Choose This Sensor Set?

Generic sensors often fail prematurely or misread data, risking engine damage. Ours is built to OE standards with heat-resistant materials, ensuring accuracy even in the high-temperature environment of a 4.3L V8 engine. The 3-year warranty and 100% pre-shipment testing mean you’re investing in reliability—not just replacement parts.

Restore your vehicle performance and protect its value. Add the 89465-50120/89465-50130 oxygen sensor set to your cart today!