Denso 234-9023 Air / Fuel Ratio Sensor - Upstream Left
OE Quality 60-Day Returns
Denso
 OE Style

Denso 234-9023 Air / Fuel Ratio Sensor - Upstream Left

Brand Denso 234-9023
Position Upstream Left
Connector Gender Male
Grade Type Regular
Sensor Type Heated
Thread Diameter 0.711
Universal Or Specific Fit Specific
Wire Quantity 4
Wiring Harness Length 15.35
Product line OE Style
Fits Toyota · 3 vehicles

OE style replacement. Precision-built for exact replacement and a first-time fit.

Heated sensor. Delivers fast, consistent air/fuel ratio readings.

Manufactured and tested to strict OE standards.

Cross-references ACDelco 213-2840, BorgWarner OS1426 and Bosch 15217 for the same application. See all 9.

$177.82Free shipping
In stock · usually ships same day before 1pm CST
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Order total $177.82
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
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Denso OE Style Air/Fuel Ratio Sensor

The Denso 234-9023 air/fuel ratio sensor is an OE Style replacement built for precise signal control and exact fit. It is a heated, specific-fit sensor designed for 2001-2003 Toyota RAV4 upstream left applications, making it a direct-match option for the correct Toyota RAV4 sensor location.

Key Features

  • OE Style replacement for accurate air/fuel ratio monitoring
  • Heated sensor design for faster operating temperature
  • Specific fit for cleaner installation and correct connector alignment
  • 4-wire configuration with male connector
  • Wiring harness length: 15.35
  • Thread diameter: 0.711
  • Fits 2001-2003 Toyota RAV4, upstream left

Product Details

Denso builds the 234-9023 to strict OE standards, with precision manufacturing and testing aimed at exact replacement fitment. As part of the OE Style line, this sensor is focused on matching factory-style dimensions and electrical characteristics for the 2001-2003 Toyota RAV4 upstream left position. This part cross-references Toyota (e.g., 8946742010) for the same application.

Common Issues This Sensor Can Address

  • Check engine light related to air/fuel ratio sensor performance
  • Incorrect upstream sensor readings affecting fuel control
  • Rough idle or hesitation tied to faulty sensor input
  • Emissions test failures caused by sensor degradation
  • Poor fuel mixture correction in the Toyota RAV4

Installation Notes

Verify the upstream left location before ordering, since this sensor is specific to the listed application. Confirm connector style, wire count, and thread diameter against the original part on the vehicle. For best results, inspect the harness routing and exhaust-side mounting area before installation on a 2001-2003 Toyota RAV4.

Quality Assurance

Denso manufactures and tests this sensor to OE standards for consistent replacement quality and first-time fit. The OE Style line is built around exact replacement dimensions and factory-style application matching for the correct Toyota RAV4 fitment.

Related reading

This part fits 3 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2003ToyotaRAV4Upstream LeftOE Style
2002ToyotaRAV4Upstream LeftOE Style
2001ToyotaRAV4Upstream LeftOE Style
Directly replaces or cross-references 9 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
ACDelco — 213-2840BorgWarner — OS1426Bosch — 15217Delphi — ES10929NTK — 24657Standard Ignition — SG1863Toyota — 8946742010Walker Products — 250-54073Walker Products — 350-64025