HomeEmission Control > SensorsDenso 234-3018 Oxygen Sensor - Upstream
Part #: 234-3018

Denso 234-3018 Oxygen Sensor - Upstream

OE Style, Upstream
⚙️ 15 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦OE Style, Upstream
🚗Fitment: Volkswagen, Golf and Jetta
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Overview of the Denso OE Style Oxygen Sensor 234-3018

The Denso OE Style Oxygen Sensor 234-3018 is designed specifically for Volkswagen Golf and Jetta models. This heated oxygen sensor features a threaded mounting type and a 38.82-inch wiring harness, ensuring precise fitment and reliable performance.

  • Heated sensor type for faster response times
  • Specific fit for Volkswagen Golf and Jetta
  • Threaded mounting with 0.708-inch thread diameter
  • Three-wire configuration with male connector
  • 38.82-inch wiring harness length for optimal installation

Detailed Product Description

The Denso 234-3018 oxygen sensor is engineered to meet the exact specifications of Volkswagen Golf and Jetta vehicles. As a heated sensor, it quickly reaches operating temperature, improving fuel efficiency and reducing emissions. The sensor’s three-wire design includes a male connector and a threaded mounting type with a 0.708-inch diameter, ensuring secure installation and compatibility with factory wiring harnesses. The 38.82-inch wiring harness length provides sufficient reach for straightforward replacement without modifications.

About the Denso OE Style Product Line

The OE Style line from Denso focuses on delivering parts that closely match original equipment specifications. This oxygen sensor maintains the quality and fitment standards expected from factory components, making it a reliable choice for Volkswagen Golf and Jetta owners seeking direct replacement parts that integrate seamlessly with their vehicle’s emission control system.

Common Applications and Issues Addressed

  • Restores accurate oxygen sensing for optimal air-fuel mixture
  • Helps resolve check engine light codes related to oxygen sensor failure
  • Improves fuel economy by providing precise feedback to the engine control unit
  • Reduces harmful emissions by ensuring proper catalytic converter function
  • Eliminates rough idling or engine hesitation caused by faulty sensors

Installation Notes and Tips

When installing the Denso 234-3018 oxygen sensor, ensure the vehicle is cool to avoid burns. Use an oxygen sensor socket or appropriate tool to remove the old sensor carefully. Verify the wiring harness length and connector gender match the vehicle’s factory harness. Thread the sensor by hand initially to prevent cross-threading, then tighten to manufacturer torque specifications. It is recommended to inspect the wiring and connector for damage before installation.

Quality Assurance and Warranty

Denso oxygen sensors are manufactured to meet strict quality standards and undergo rigorous testing to ensure durability and performance. The OE Style 234-3018 sensor is designed to provide reliable operation consistent with original equipment. Warranty coverage details should be confirmed with the distributor or vehicle manufacturer.

BrandDenso
Part Number234-3018
PositionOE Style, Upstream
Connector GenderMale
Mounting TypeThreaded
Sensor TypeHeated
Thread Diameter0.708
Universal Or Specific FitSpecific
Wire Quantity3
Wiring Harness Length38.82

This part fits 15 vehicles. Search below:

YearMakeModelSubmodelPositionNotes
1992VolkswagenGolfUpstreamExcluding California.; OE Style
1992VolkswagenJettaUpstreamExc Calif.; OE Style
1992VolkswagenJettaUpstreamOE Style
1991VolkswagenGolfUpstreamExcluding California.; OE Style
1991VolkswagenJettaUpstreamOE Style
1990VolkswagenGolfUpstreamOE Style
1990VolkswagenJettaUpstreamSensor w/ 1 Connector; OE Style
1989VolkswagenGolfGLUpstreamOE Style
1989VolkswagenGolfBaseUpstreamOE Style
1989VolkswagenJettaUpstreamSensor w/ 1 Connector; OE Style
1988VolkswagenGolfGTUpstreamOE Style
1988VolkswagenGolfGLUpstreamOE Style
1988VolkswagenGolfBaseUpstreamOE Style
1988VolkswagenJettaUpstreamSensor w/ 1 Connector; OE Style
1987VolkswagenJettaUpstreamSensor w/ 1 Connector; OE 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:

213-1238213-1364

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