Denso 234-4420 Oxygen Sensor - Upstream
OE Quality 60-Day Returns
Denso
 OE Style

Denso 234-4420 Oxygen Sensor - Upstream

Brand Denso 234-4420
Position Upstream
Wiring Harness Length 15.75
Sensor Type Heated
Universal Or Specific Fit Specific
Wire Quantity 4
Connector Gender Male
Thread Diameter 0.708
Mounting Type Threaded
Product line OE Style
Fits Chevrolet and Suzuki · 2 vehicles

OE Style. Built for exact replacement fitment and first-time installation accuracy.

Heated design. Supports fast sensor operation for precise exhaust feedback.

Aluminum oxide trap layer. Helps protect the ceramic element from contamination for longer service life.

Cross-references Bosch 15240, GMC 96410280 and GMC 96443420 for the same application. See all 7.

$99.57Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.

Select your vehicle to confirm fitment
Verify this part fits before purchasing β€” free returns if it doesn't
Step 2 — Quantity
Order total $99.57
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Oxygen Sensor options

OE Style Oxygen Sensor

The Denso 234-4420 is a specific-fit oxygen sensor built to OE standards for exact replacement and first-time fit. It is a heated, threaded sensor with a 4-wire design and a male connector for direct service replacement.

  • Specific-fit oxygen sensor for direct replacement service
  • Heated sensor design for accurate exhaust feedback
  • 4-wire construction with male connector
  • Threaded mounting with 0.708-inch thread diameter
  • OE Style line focused on exact replacement fitment

Detailed Product Overview

Denso 234-4420 is engineered as an OE-style oxygen sensor for emissions control applications where precise air-fuel feedback matters. The sensor uses Denso's aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting consistent operation and long service life. For drivers and technicians servicing a Chevrolet Epica or Suzuki Verona, this oxygen sensor is built to match the original application requirements and restore proper upstream sensor function.

This part cross-references Bosch 15240 and NTK 25191 for the same application.

What This Part Helps Address

  • Check engine light related to upstream oxygen sensor faults
  • Incorrect air-fuel mixture feedback to the engine control system
  • Reduced fuel economy caused by a worn oxygen sensor
  • Emissions test failures tied to sensor performance
  • Slow or inconsistent sensor response in exhaust monitoring

Installation Notes and Tips

Fits 2006 Chevrolet Epica, upstream. Fits 2006 Suzuki Verona, upstream. Verify connector style, thread diameter, and harness length before installation. Use the vehicle's original sensor location and confirm the threaded mounting point is clean and free of corrosion for proper seating.

Quality Assurance

Denso manufactures and tests this oxygen sensor to strict OE standards. The OE Style line is built for exact replacement fitment and first-time installation accuracy.

Related reading

This part fits 2 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2006ChevroletEpicaUpstreamOE Style
2006SuzukiVeronaUpstreamOE Style
Directly replaces or cross-references 7 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Bosch — 15240GMC — 96410280GMC — 96443420NTK — 25191Suzuki — 1821286Z10Walker Products — 250-24772Walker Products — 350-34393