HomeEmission Control > SensorsDenso 234-4248 Oxygen Sensor - Downstream
Part #: 234-4248

Denso 234-4248 Oxygen Sensor - Downstream

OE Style, Downstream
⚙️ 2 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦OE Style, Downstream
🚗Fitment: Saturn, Astra
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Overview of Denso OE Style Oxygen Sensor 234-4248

The Denso OE Style Oxygen Sensor 234-4248 is designed specifically for Saturn Astra models, providing precise emission control monitoring. This heated oxygen sensor features a threaded mounting type and a female connector, ensuring a secure and accurate fit for your vehicle's exhaust system.

  • Heated oxygen sensor for faster response times
  • Specific fit for Saturn Astra vehicles
  • Threaded mounting type with 0.708 thread diameter
  • 18.50-inch wiring harness length for optimal installation
  • Four-wire design with female connector for reliable connection

Detailed Product Description

This Denso OE Style oxygen sensor (part number 234-4248) is engineered to meet the exact specifications of Saturn Astra models. The heated sensor type allows for quicker activation and improved fuel efficiency by accurately measuring oxygen levels in the exhaust gases. With a wiring harness length of 18.50 inches and a four-wire configuration, this sensor ensures proper electrical connectivity and signal transmission. The female connector and threaded mounting type with a 0.708-inch diameter provide a secure and precise installation, maintaining the integrity of your vehicle's emission control system.

About the OE Style Product Line

The Denso OE Style product line focuses on delivering parts that closely match original equipment specifications. This ensures compatibility and performance consistent with factory-installed components. The 234-4248 oxygen sensor from the OE Style line is designed to provide reliable operation and fitment for Saturn Astra vehicles, supporting emission control compliance and engine efficiency.

Common Applications and Issues Addressed

  • Restores accurate oxygen level readings for proper air-fuel mixture
  • Helps resolve rough idling caused by faulty sensor signals
  • Reduces increased emissions due to sensor malfunction
  • Prevents poor fuel economy linked to incorrect oxygen sensor data
  • Eliminates check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

When installing the Denso 234-4248 oxygen sensor on a Saturn Astra, ensure the sensor is threaded securely without over-tightening to avoid damage. The 18.50-inch wiring harness length provides flexibility for routing, but verify connector compatibility before installation. It is recommended to use anti-seize compound on the threads to facilitate future removal. Always disconnect the battery before installation to prevent electrical shorts.

Quality Assurance and Warranty

Denso oxygen sensors are manufactured to meet strict quality standards, ensuring durability and reliable performance. The OE Style 234-4248 sensor undergoes rigorous testing to comply with emission control requirements. Warranty coverage details should be confirmed with the original parts provider or vehicle manufacturer.

BrandDenso
Part Number234-4248
PositionOE Style, Downstream
Connector GenderFemale
Mounting TypeThreaded
Sensor TypeHeated
Thread Diameter0.708
Universal Or Specific FitSpecific
Wire Quantity4
Wiring Harness Length18.50

This part fits 2 vehicles. Search below:

YearMakeModelPositionNotes
2009SaturnAstraDownstreamOE Style
2008SaturnAstraDownstreamOE 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:

18027

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