HomeEmission Control > SensorsDenso 234-4049 Oxygen Sensor - Upstream
Part #: 234-4049

Denso 234-4049 Oxygen Sensor - Upstream

OE Style, Upstream
⚙️ 27 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦OE Style, Upstream
🚗Fitment: Chevrolet, Suzuki, Pontiac, and Geo, Metro, Swift, Tracker, Firefly, and Vitara
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Overview of the Denso OE Style Oxygen Sensor 234-4049

The Denso OE Style Oxygen Sensor 234-4049 is designed specifically for select Chevrolet, Geo, Pontiac, and Suzuki models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases precisely.

  • Heated sensor type for faster response times
  • Specific fit for Chevrolet Firefly, Geo Metro, Pontiac Firefly, Suzuki Swift, Tracker, and Vitara
  • Threaded mounting type with 0.708 inch thread diameter
  • Four-wire design with a male connector for secure electrical connection
  • Wiring harness length of 14.96 inches for proper installation

Detailed Features and Specifications

The Denso 234-4049 oxygen sensor features a heated sensor element that allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. Its specific fitment ensures compatibility with Chevrolet Firefly, Geo Metro, Pontiac Firefly, Suzuki Swift, Tracker, and Vitara models, providing a direct replacement without modification. The sensor includes a 14.96-inch wiring harness and a male connector with four wires, facilitating a reliable electrical connection. The threaded mounting type with a 0.708-inch diameter allows for secure installation in the exhaust system.

About the Denso OE Style Product Line

The OE Style line from Denso focuses on delivering parts that meet original equipment specifications. This oxygen sensor is engineered to match the fit, form, and function of the factory-installed sensor, ensuring consistent performance and durability. The OE Style designation indicates that this sensor is designed for specific vehicle applications, providing a precise fit and reliable operation.

Common Applications and Problem Resolution

  • Restores accurate oxygen sensing for proper air-fuel mixture control
  • Helps resolve check engine light issues related to oxygen sensor faults
  • Improves fuel economy by ensuring efficient combustion
  • Reduces harmful emissions by maintaining proper sensor function
  • Prevents engine performance problems caused by faulty sensor readings

Installation Notes and Tips

When installing the Denso 234-4049 oxygen sensor, ensure the vehicle is compatible with the specific fitment list including Chevrolet Firefly, Geo Metro, Pontiac Firefly, Suzuki Swift, Tracker, and Vitara. Use proper tools to avoid damaging the threaded mounting. Verify the wiring harness length and connector gender match the vehicle’s harness for a secure connection. It is recommended to replace the sensor when the engine is cool to prevent injury.

Quality Assurance and Warranty

Denso oxygen sensors are manufactured to meet strict quality standards and undergo rigorous testing to ensure reliability and durability. The OE Style 234-4049 sensor is built to provide consistent performance aligned with original equipment specifications. Warranty coverage details should be confirmed with the distributor or installer.

BrandDenso
Part Number234-4049
PositionOE Style, Upstream
Connector GenderMale
Mounting TypeThreaded
Sensor TypeHeated
Thread Diameter0.708
Universal Or Specific FitSpecific
Wire Quantity4
Wiring Harness Length14.96

This part fits 27 vehicles. Search below:

YearMakeModelPositionNotes
2001ChevroletMetroUpstreamOE Style
2001SuzukiSwiftUpstreamOE Style
2000ChevroletMetroUpstreamOE Style
2000ChevroletTrackerUpstreamExcluding California.; OE Style
2000PontiacFireflyUpstreamOE Style
2000SuzukiSwiftUpstreamOE Style
2000SuzukiVitaraUpstreamExcluding California.; OE Style
1999ChevroletMetroUpstreamOE Style
1999ChevroletTrackerUpstreamExcluding California.; OE Style
1999PontiacFireflyUpstreamOE Style
1999SuzukiSwiftUpstreamOE Style
1999SuzukiVitaraUpstreamExcluding California.; OE Style
1998ChevroletMetroUpstreamOE Style
1998PontiacFireflyUpstreamOE Style
1998SuzukiSwiftUpstreamOE Style
1997GeoMetroUpstreamOE Style
1997PontiacFireflyUpstreamOE Style
1997SuzukiSwiftUpstreamOE Style
1996GeoMetroUpstreamOE Style
1996PontiacFireflyUpstreamOE Style
1996SuzukiSwiftUpstreamOE Style
1995GeoMetroUpstreamOE Style
1995PontiacFireflyUpstreamOE Style
1995SuzukiSwiftUpstreamOE Style
1994GeoMetroUpstreamCalifornia exempt parts can be used on pollution controlled vehicles in California.; OE Style
1994PontiacFireflyUpstreamCalifornia exempt parts can be used on pollution controlled vehicles in California.; OE Style
1994SuzukiSwiftUpstreamCalifornia exempt parts can be used on pollution controlled vehicles in California.; 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:

213-1648213-3078213-3912213-432213-950

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