Denso 234-4422 Oxygen Sensor - Upstream
OE Quality 60-Day Returns
Denso
 OE Style

Denso 234-4422 Oxygen Sensor - Upstream

Brand Denso 234-4422
Position Upstream
Connector Gender Male
Mounting Type Threaded
Sensor Type Heated
Thread Diameter 0.708
Universal Or Specific Fit Specific
Wire Quantity 4
Wiring Harness Length 15.75
Product line OE Style
Fits Chevrolet and Suzuki · 2 vehicles

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

Heated sensor. Helps maintain accurate readings for dependable engine performance.

Threaded mounting. Installs with a secure, specific-fit connection.

Cross-references ACDelco 213-1365, Bosch 15491 and Delphi ES20037 for the same application. See all 10.

$89.32Free shipping
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Free returns within 60 days if it doesn't fit when fitment is verified.
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Denso OE Style Oxygen Sensor 234-4422

Denso 234-4422 is a specific-fit heated oxygen sensor built for OE-style replacement and accurate exhaust monitoring. It is engineered for the 2004-2005 Suzuki Verona upstream position, with the correct connector, thread size, and harness length for a direct-fit service replacement.

Key Features

  • Heated oxygen sensor for faster operating response
  • Specific fit for the upstream location on the Suzuki Verona
  • 4-wire design with male connector
  • 15.75 in. wiring harness length
  • Threaded mounting with 0.708 in. thread diameter
  • OE Style replacement built to match factory fit and function

OE Style Design and Construction

Denso’s OE Style line is built around exact replacement requirements, with precision construction for first-time fitment. This oxygen sensor uses an aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting stable sensor performance, improved fuel efficiency, and longer service life. For buyers searching for a 2004 Suzuki Verona upstream oxygen sensor or a 2005 Suzuki Verona upstream O2 sensor, Denso 234-4422 provides the correct application-specific design.

This part cross-references Bosch 15491 and NTK 25666 for the same application.

What This Oxygen Sensor Helps Address

  • Check engine light related to oxygen sensor performance
  • Incorrect air-fuel mixture readings
  • Reduced fuel economy from a failing upstream sensor
  • Slow sensor response during closed-loop operation
  • Emissions test failures tied to exhaust monitoring faults

Installation Notes and Fitment

Fits 2004-2005 Suzuki Verona, upstream. Confirm the connector style, 4-wire configuration, and threaded mounting before installation. The 15.75 in. harness length and 0.708 in. thread diameter are important fitment checks for a direct replacement on the Verona. Denso 234-4422 is a specific-fit sensor, so it should be matched to the listed vehicle and position only.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for consistent fit and performance. The brand’s OE-style replacement approach focuses on exact application matching and durable sensor construction for dependable service in the 2004-2005 Suzuki Verona upstream position.

Related reading

This part fits 2 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2005SuzukiVeronaUpstreamOE Style
2004SuzukiVeronaUpstreamOE Style
Directly replaces or cross-references 10 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
ACDelco — 213-1365Bosch — 15491Delphi — ES20037GMC — 96385505GMC — 96412900NTK — 25666Suzuki — 1821286Z01Suzuki — 1821286Z02Walker Products — 250-24384Walker Products — 350-34026