HomeEmission Control > SensorsDenso 234-8004 Oxygen Sensor
Part #: 234-8004

Denso 234-8004 Oxygen Sensor

Oxygen Sensor - OE Style, Downstream Left, Downstream, Downstream Right, and Downstream Front
58 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$106.39Free 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
Oxygen Sensor - OE Style, Downstream Left, Downstream, Downstream Right, and Downstream Front
Fitment: Lexus and Toyota, Corolla, Highlander, Prius, Prius AWD-e, Prius Prime, Prius V, RX350, RX350L, RX450h, RX450hL, and Sienna
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Oxygen Sensor for Lexus and Toyota Vehicles

The Denso OE Style 234-8004 oxygen sensor is designed to provide accurate emissions monitoring for select Lexus and Toyota models. This heated oxygen sensor ensures optimal engine performance and emission control by delivering precise air-fuel mixture data to the vehicle’s engine management system.

  • Heated sensor type for faster response times
  • Specific fit for Lexus and Toyota models including Corolla, Highlander, Prius, RX350, and Sienna
  • 16.73-inch wiring harness length for proper installation
  • Four-wire design with male connector for secure connection
  • Threaded mounting type with 0.709-inch thread diameter

About the Denso OE Style Product Line

The OE Style line from Denso offers oxygen sensors engineered to meet original equipment specifications. The 234-8004 sensor maintains factory-level fit, form, and function, ensuring compatibility and reliable performance in emission control systems. This product line focuses on delivering components that align closely with the original parts installed by vehicle manufacturers.

Product Details and Specifications

This oxygen sensor features a heated element to reduce warm-up time, improving sensor accuracy shortly after engine start. The 16.73-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 threaded mounting type with a 0.709-inch diameter ensures a secure and leak-free installation.

Compatible Vehicles and Common Applications

  • Compatible with Lexus RX350, RX350L, RX450h, RX450hL
  • Fits Toyota Corolla, Highlander, Sienna
  • Suitable for Toyota Prius, Prius AWD-e, Prius Prime, Prius V
  • Used in emission control systems to monitor oxygen levels in exhaust gases
  • Helps address issues such as poor fuel economy, rough idling, and failed emissions tests

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns. The threaded mounting type requires proper torque to prevent exhaust leaks. Verify the connector gender matches the vehicle harness for a secure fit. Follow manufacturer torque specifications and safety guidelines during installation.

Quality Assurance and Warranty

Denso OE Style oxygen sensors are manufactured to meet strict quality standards for durability and performance. While specific warranty details are not provided here, Denso products typically come with manufacturer-backed warranties to ensure reliability and customer confidence.

BrandDenso
Part Number234-8004
PositionOxygen Sensor - OE Style, Downstream Left, Downstream, Downstream Right, and Downstream Front
Wiring Harness Length16.73
Sensor TypeHeated
Universal Or Specific FitSpecific
Wire Quantity4
Connector GenderMale
Thread Diameter0.709
Mounting TypeThreaded

This part fits 58 vehicles. Search below:

YearMakeModelSubmodelDrive TypeFuel TypePositionNotes
2024ToyotaCorollaDownstreamOE; Oxygen Sensor - OE Style
2023ToyotaCorollaDownstreamOE; Oxygen Sensor - OE Style
2022LexusRX350F SportDownstream LeftOE; Oxygen Sensor - OE Style
2022LexusRX350LDownstream RightOE; Oxygen Sensor - OE Style
2022LexusRX450hF SportDownstream RightOE; Oxygen Sensor - OE Style
2022LexusRX450hLDownstream LeftOE; Oxygen Sensor - OE Style
2022ToyotaCorollaDownstreamOE; Oxygen Sensor - OE Style
2022ToyotaHighlanderXSEDownstream RightOE; Oxygen Sensor - OE Style
2022ToyotaPriusDownstreamOE; Oxygen Sensor - OE Style
2022ToyotaPrius AWD-eDownstreamOE; Oxygen Sensor - OE Style
2022ToyotaPrius PrimeDownstreamOE; Oxygen Sensor - OE Style
2021LexusRX350F SportDownstream LeftOE; Oxygen Sensor - OE Style
2021LexusRX350LDownstream RightOE; Oxygen Sensor - OE Style
2021LexusRX450hF SportDownstream RightOE; Oxygen Sensor - OE Style
2021LexusRX450hLDownstream LeftOE; Oxygen Sensor - OE Style
2021ToyotaCorollaDownstreamOE; Oxygen Sensor - OE Style
2021ToyotaHighlanderXSEDownstream RightOE; Oxygen Sensor - OE Style
2021ToyotaPriusDownstreamOE; Oxygen Sensor - OE Style
2021ToyotaPrius AWD-eDownstreamOE; Oxygen Sensor - OE Style
2021ToyotaPrius PrimeDownstreamOE; Oxygen Sensor - OE Style
2020LexusRX350F SportDownstream FrontOE; Oxygen Sensor - OE Style
2020LexusRX350LDownstream FrontOE; Oxygen Sensor - OE Style
2020LexusRX450hF SportAWDDownstream LeftOE; Oxygen Sensor - OE Style
2020LexusRX450hLDownstream LeftFits Japan built vehicles; OE Style
2020ToyotaCorollaDownstreamOE; Oxygen Sensor - OE Style
2020ToyotaHighlanderXLEDownstream RightOE; Oxygen Sensor - OE Style
2020ToyotaPriusDownstreamOE; Oxygen Sensor - OE Style
2020ToyotaPrius AWD-eDownstreamOE; Oxygen Sensor - OE Style
2020ToyotaPrius PrimeDownstreamOE; Oxygen Sensor - OE Style
2020ToyotaSiennaDownstream LeftOE; Oxygen Sensor - OE Style
2019LexusRX350Downstream LeftOE Style
2019LexusRX350LDownstream LeftFits Japan built vehicles; OE Style
2019LexusRX450hF SportDownstream LeftOE; Oxygen Sensor - OE Style
2019LexusRX450hLDownstream LeftFits Japan built vehicles; OE Style
2019ToyotaHighlanderGASDownstream LeftOE Style
2019ToyotaPriusDownstreamOE Style
2019ToyotaPrius AWD-eDownstreamOE; Oxygen Sensor - OE Style
2019ToyotaPrius PrimeDownstreamOE Style
2019ToyotaSiennaDownstream LeftOE Style
2018LexusRX350Downstream LeftFits Japan built vehicles; OE Style
2018LexusRX350LDownstream LeftOE Style
2018LexusRX450hDownstream LeftOE Style
2018LexusRX450hLDownstream LeftFits Japan built vehicles; OE Style
2018ToyotaHighlanderDownstream LeftOE Style
2018ToyotaPriusDownstreamOE Style
2018ToyotaPrius PrimeDownstreamOE Style
2018ToyotaSiennaDownstream LeftOE Style
2017LexusRX350Downstream LeftOE Style
2017LexusRX450hDownstream LeftOE Style
2017ToyotaHighlanderDownstream LeftOE Style
2017ToyotaPriusDownstreamOE Style
2017ToyotaPrius PrimeDownstreamOE Style
2017ToyotaPrius VDownstreamOE Style
2017ToyotaSiennaDownstream LeftOE Style
2016LexusRX350Downstream LeftOE Style
2016LexusRX450hDownstream LeftOE Style
2016ToyotaPriusDownstreamOE Style
2016ToyotaSiennaFWDDownstream RightOE; Oxygen Sensor - 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:

24784

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