Denso
OE Style

Denso 234-4749 Oxygen Sensor - Downstream or Downstream Left

Brand Denso 234-4749
Position Downstream Left
Connector Gender Female
Mounting Type Threaded
Sensor Type Heated
Thread Diameter 0.708
Universal Or Specific Fit Specific
Wire Quantity 4
Wiring Harness Length 18.19
Product line OE Style
Fits Dodge · 6 vehicles

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

Heated sensor. Helps support quicker operation and consistent readings.

Threaded mounting. Female connector and 4-wire design for straightforward installation.

Cross-references ACDelco 213-2991, BorgWarner OS1421 and Bosch 15825 for the same application. See all 9.

$49.27Free shipping
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Order total $49.27
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Free returns within 60 days if it doesn't fit when fitment is verified.

Denso OE Style Oxygen Sensor 234-4749

Denso 234-4749 is an OE-style heated oxygen sensor built for direct replacement on select Dodge applications. It is engineered for exact fit and reliable signal feedback, with a specific-fit design that matches the original mounting and connector layout.

Key Features

  • Heated oxygen sensor for faster operating response
  • Specific-fit design for direct replacement
  • 4-wire configuration with female connector
  • Threaded mounting with 0.708 in. thread diameter
  • 18.19 in. wiring harness length
  • OE-style construction for factory-like fit and function

OE Style Construction

Denso’s OE Style line focuses on replacement parts built to strict original-equipment standards. This oxygen sensor uses precision-built components for first-time fitment and consistent installation on the intended vehicle applications. The sensor also incorporates an aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting stable engine management and long service life.

This part cross-references Bosch 15825 and NTK 23537 for the same application. It is a direct replacement for select Dodge Dakota, Dodge Durango, and Dodge Ram 1500 applications, including downstream left positions where listed.

What It Helps Address

  • Check engine light related to oxygen sensor performance
  • Incorrect air-fuel mixture readings
  • Reduced fuel economy from a slow or inaccurate sensor signal
  • Rough idle or drivability issues tied to exhaust feedback
  • Failed emissions testing caused by a worn downstream sensor

Installation Notes

Verify the connector style, wire count, thread diameter, and downstream left or downstream position before installation. This sensor is a specific-fit replacement for 2001-2002 Dodge Dakota, 2001-2002 Dodge Durango, and 2002 Dodge Ram 1500 applications listed in the fitment data. Use proper sensor removal tools and confirm the exhaust threads are clean before threading the new sensor into place.

Quality Assurance

Denso manufactures and tests these oxygen sensors to OE standards for consistent fit and dependable operation. The 234-4749 is built as an OE-style replacement for the listed Dodge applications, with attention to original-equipment dimensions and sensor response characteristics.

This part fits 6 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelTransmissionPositionNotes
2002DodgeDakotaAutomaticDownstream LeftOE Style
2002DodgeDurango—Downstream LeftCalifornia exempt parts can be used on pollution controlled vehicles in California.; OE Style
2002DodgeRam 1500—Downstream LeftCalifornia exempt parts can be used on pollution controlled vehicles in California.; OE Style
2002DodgeRam 1500—DownstreamExcluding California.; OE Style
2001DodgeDakotaAutomaticDownstream LeftOE Style
2001DodgeDurango—Downstream LeftCalifornia exempt parts can be used on pollution controlled vehicles in California.; OE Style
Directly replaces or cross-references 9 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
ACDelco — 213-2991BorgWarner — OS1421Bosch — 15825Chrysler — 56028587AADelphi — ES20201NTK — 23537Standard Ignition — SG1851Walker Products — 250-24276Walker Products — 350-34171