HomeEmission Control > SensorsDenso 234-9009 Air / Fuel Ratio Sensor
Part #: 234-9009

Denso 234-9009 Air / Fuel Ratio Sensor

OE Style, Upstream Front, Upstream, Upstream Left, and Upstream Right
20 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$159.41Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
OE Style, Upstream Front, Upstream, Upstream Left, and Upstream Right
Fitment: Lexus and Toyota, Avalon, Camry, ES300, Highlander, RX300, Sienna, and Solara
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Air/Fuel Ratio Sensor for Lexus and Toyota Vehicles

The Denso OE Style 234-9009 Air/Fuel Ratio Sensor is engineered to provide precise emissions control for select Lexus and Toyota models. Designed as a specific fit part, this heated sensor ensures accurate air-fuel mixture readings to maintain optimal engine performance and reduce emissions.

  • Heated sensor type for faster response times
  • Specific fit for Lexus and Toyota models including Avalon, Camry, ES300, Highlander, RX300, Sienna, and Solara
  • 14.17-inch wiring harness length for proper installation
  • Four-wire configuration with male connector for secure connection
  • Thread diameter of 0.711 inches for exact fitment
  • Regular grade type for standard durability and performance

About the Denso OE Style Product Line

The OE Style line from Denso focuses on delivering parts that meet original equipment specifications. The 234-9009 Air/Fuel Ratio Sensor is part of this line, ensuring compatibility and performance that align with factory standards. This product line is designed to provide reliable operation and maintain vehicle emissions compliance for specific Lexus and Toyota models.

Product Details and Specifications

This air/fuel ratio sensor features a heated element to quickly reach operating temperature, improving sensor response and engine efficiency. The 14.17-inch wiring harness length allows for proper routing and connection within the engine bay. With four wires and a male connector, the sensor integrates seamlessly with the vehicle’s existing wiring harness. The 0.711-inch thread diameter ensures a secure and precise fit in the exhaust system. This sensor is designed specifically for Lexus and Toyota vehicles, including Avalon, Camry, ES300, Highlander, RX300, Sienna, and Solara models, providing a direct replacement for the original part number 234-9009.

Common Applications and Issues Addressed

  • Helps maintain proper air/fuel mixture for efficient combustion
  • Reduces emissions by providing accurate sensor data to the engine control unit
  • Resolves engine performance issues related to faulty air/fuel ratio readings
  • Prevents check engine light triggers caused by sensor malfunctions
  • Improves fuel economy by ensuring optimal sensor operation

Installation Notes and Tips

When installing the Denso 234-9009 sensor, ensure the wiring harness is routed without tension or sharp bends to avoid damage. Verify the male connector securely mates with the vehicle’s wiring harness. Use appropriate tools to tighten the sensor to the specified torque to prevent exhaust leaks. This sensor is designed for specific Lexus and Toyota models, so confirm vehicle compatibility before installation.

Quality Assurance and Warranty

Denso OE Style sensors are manufactured to meet original equipment standards, ensuring reliable performance and durability. While specific warranty details are not provided here, Denso products typically come with manufacturer-backed quality assurance to support long-term use in Lexus and Toyota vehicles.

BrandDenso
Part Number234-9009
PositionOE Style, Upstream Front, Upstream, Upstream Left, and Upstream Right
Wiring Harness Length14.17
Sensor TypeHeated
Universal Or Specific FitSpecific
Wire Quantity4
Grade TypeRegular
Connector GenderMale
Thread Diameter0.711

This part fits 20 vehicles. Search below:

YearMakeModelPositionNotes
2003LexusRX300UpstreamOE Style
2003ToyotaHighlanderUpstreamOE Style
2002LexusRX300UpstreamOE Style
2002ToyotaHighlanderUpstreamOE Style
2001LexusRX300UpstreamOE Style
2001ToyotaHighlanderUpstreamOE Style
2000LexusRX300UpstreamOE Style
2000ToyotaCamryUpstream FrontCalifornia exempt parts can be used on pollution controlled vehicles in California.; OE Style
2000ToyotaSiennaUpstream RightCalifornia exempt parts can be used on pollution controlled vehicles in California.; OE Style
2000ToyotaSolaraUpstream FrontCalifornia exempt parts can be used on pollution controlled vehicles in California.; OE Style
1999LexusES300Upstream FrontOE Style
1999LexusRX300UpstreamOE Style
1999ToyotaAvalonUpstream LeftCalifornia exempt parts can be used on pollution controlled vehicles in California.; OE Style
1999ToyotaCamryUpstream FrontCalifornia exempt parts can be used on pollution controlled vehicles in California.; OE Style
1999ToyotaSiennaUpstream RightCalifornia exempt parts can be used on pollution controlled vehicles in California.; OE Style
1999ToyotaSolaraUpstream FrontCalifornia exempt parts can be used on pollution controlled vehicles in California.; OE Style
1998LexusES300Upstream FrontCalifornia exempt parts can be used on pollution controlled vehicles in California.; OE Style
1998ToyotaAvalonUpstream LeftCalifornia exempt parts can be used on pollution controlled vehicles in California.; OE Style
1998ToyotaCamryUpstream FrontCalifornia exempt parts can be used on pollution controlled vehicles in California.; OE Style
1997ToyotaAvalonUpstream LeftCalifornia exempt parts can be used on pollution controlled vehicles in California.; OE Style

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

213-2840

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.