HomeEmission Control > SensorsDenso 234-4423 Oxygen Sensor - Downstream
Part #: 234-4423

Denso 234-4423 Oxygen Sensor - Downstream

OE Style, Downstream
3 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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OE Direct Replacement — Bolt-on fit, no modifications needed
OE Style, Downstream
Fitment: Suzuki and Chevrolet, Forenza, Reno, and Optra
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Denso OE Style Oxygen Sensor 234-4423

The Denso OE Style Oxygen Sensor 234-4423 is designed specifically for Suzuki Forenza models, ensuring precise emission control and optimal engine performance. This heated oxygen sensor features a threaded mounting type and a 27.56-inch wiring harness for straightforward installation.

  • Heated oxygen sensor for accurate exhaust gas monitoring
  • Specific fit for Suzuki Forenza vehicles
  • Threaded mounting with 0.708-inch thread diameter
  • 27.56-inch wiring harness length with 4 wires and male connector
  • Part number 234-4423 for easy identification and replacement

Detailed Product Description

The Denso OE Style 234-4423 oxygen sensor is engineered to meet the exact specifications of Suzuki Forenza models. As a heated sensor, it quickly reaches operating temperature to provide accurate readings of the oxygen content in the exhaust gases. This sensor uses a threaded mounting type with a 0.708-inch thread diameter, ensuring a secure and proper fit. The wiring harness length of 27.56 inches and the 4-wire configuration with a male connector facilitate compatibility with the vehicle’s existing electrical system. This specific fit sensor helps maintain efficient fuel combustion and reduces harmful emissions.

About the OE Style Product Line

The Denso OE Style product line focuses on delivering parts that closely match original equipment specifications. The OE Style oxygen sensors are designed to provide reliable performance and durability, making them suitable replacements for factory-installed components. The 234-4423 sensor maintains the quality and fit expected from original parts, supporting proper emission control and engine management systems in Suzuki Forenza vehicles.

Common Applications and Issues Addressed

  • Restores accurate oxygen level readings for proper air-fuel mixture
  • Helps resolve engine performance issues such as rough idling or hesitation
  • Reduces increased emissions and potential failed emissions tests
  • Prevents check engine light triggers related to oxygen sensor faults
  • Improves fuel efficiency by ensuring correct sensor feedback

Installation Notes and Tips

  • Ensure the vehicle is compatible with part number 234-4423 before installation
  • Use proper tools to avoid damaging the threaded mounting during installation
  • Verify the wiring harness length and connector type match the vehicle’s harness
  • Follow manufacturer torque specifications for sensor mounting
  • Inspect the sensor wiring for any damage before installation

Quality Assurance and Warranty

Denso OE Style oxygen sensors are manufactured to meet stringent quality standards, ensuring reliable operation and longevity. While specific warranty details may vary, Denso typically offers coverage against defects in materials and workmanship. Using the 234-4423 sensor helps maintain emission control system integrity and supports compliance with environmental regulations.

BrandDenso
Part Number234-4423
PositionOE Style, Downstream
Connector GenderMale
Mounting TypeThreaded
Sensor TypeHeated
Thread Diameter0.708
Universal Or Specific FitSpecific
Wire Quantity4
Wiring Harness Length27.56

This part fits 3 vehicles. Search below:

YearMakeModelPositionNotes
2008SuzukiForenzaDownstreamOE Style
2007SuzukiForenzaDownstreamOE Style
2006SuzukiForenzaDownstreamOE 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:

ES20171

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