Denso 234-4135 Oxygen Sensor - Upstream
OE Quality 60-Day Returns
Denso
 OE Style

Denso 234-4135 Oxygen Sensor - Upstream

Brand Denso 234-4135
Position Upstream
Connector Gender Male
Mounting Type Threaded
Sensor Type Heated
Thread Diameter 0.708
Universal Or Specific Fit Specific
Wire Quantity 4
Wiring Harness Length 20.87
Product line OE Style
Fits Mitsubishi · 10 vehicles

OE-style replacement. Precision-built for exact replacement and a first-time fit.

Heated sensor. Helps support quicker operation and consistent performance.

Threaded mounting. Installs with a secure, direct-fit connection.

Cross-references ACDelco 213-1493, BorgWarner OS837 and Bosch 13529 for the same application. See all 13.

$53.33Free shipping
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Denso OE Style Oxygen Sensor 234-4135

Denso 234-4135 is a heated oxygen sensor built to OE-style specifications for direct replacement on select Mitsubishi applications. It is engineered for exact fit, stable signal performance, and reliable exhaust monitoring on upstream positions.

Key Features

  • Heated oxygen sensor with a 4-wire design
  • Specific-fit replacement for direct installation
  • Threaded mounting with a 0.708 in. thread diameter
  • 20.87 in. wiring harness length for proper routing
  • Male connector for OE-style electrical connection
  • OE Style line from Denso for factory-style fit and function

Product Details

This Denso oxygen sensor is part of the OE Style line, which focuses on factory-style replacement parts built for accurate fit and dependable operation. The sensor uses Denso’s aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting consistent exhaust feedback and long service life. The Denso 234-4135 is a direct-fit solution for upstream sensor locations on select Mitsubishi Mirage and Mitsubishi Galant models.

Fits 2001-2002 Mitsubishi Mirage, Upstream. Fits 1998-2000 Mitsubishi Mirage, Upstream. Fits 1995-1998 Mitsubishi Galant, Upstream. Fits 1994 Mitsubishi Galant, Upstream.

This part cross-references Bosch (e.g., 13529, 13801) for the same application.

What It Helps Address

  • Check engine light related to oxygen sensor performance
  • Incorrect air-fuel mixture readings from a worn upstream sensor
  • Reduced fuel economy caused by slow or inaccurate exhaust feedback
  • Rough idle or drivability issues tied to sensor degradation
  • Contamination-related sensor failure from silicone or lead exposure

Installation Notes

Verify the connector style, wire count, thread diameter, and upstream location before installation. Route the harness to match the original path and confirm the sensor seats fully in the threaded bung. For best results, compare the old sensor to the new unit before removal on Mitsubishi Mirage and Mitsubishi Galant applications.

Quality Assurance

Denso manufactures and tests this oxygen sensor to strict OE standards for replacement accuracy and consistent performance. The OE Style design is intended to deliver the right fit and function for the listed Mitsubishi applications.

Related reading

This part fits 10 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2002MitsubishiMirageUpstreamOE Style
2001MitsubishiMirageUpstreamOE Style
2000MitsubishiMirageUpstreamCalifornia exempt parts can be used on pollution controlled vehicles in California.; OE Style
1999MitsubishiMirageUpstreamCalifornia exempt parts can be used on pollution controlled vehicles in California.; OE Style
1998MitsubishiGalantUpstreamCalifornia exempt parts can be used on pollution controlled vehicles in California.; OE Style
1998MitsubishiMirageUpstreamCalifornia exempt parts can be used on pollution controlled vehicles in California.; OE Style
1997MitsubishiGalantUpstreamCalifornia exempt parts can be used on pollution controlled vehicles in California.; OE Style
1996MitsubishiGalantUpstreamCalifornia exempt parts can be used on pollution controlled vehicles in California.; OE Style
1995MitsubishiGalantUpstreamCalifornia exempt parts can be used on pollution controlled vehicles in California.; OE Style
1994MitsubishiGalantUpstreamFrom 05/94; Calif.; OE Style
Directly replaces or cross-references 13 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
ACDelco — 213-1493BorgWarner — OS837Bosch — 13529Bosch — 13801Delphi — ES20148Mitsubishi — MD313304Mitsubishi — MD342775NTK — 23551NTK — 24058Standard Ignition — SG182Standard Ignition — SG399Walker Products — 250-24633Walker Products — 350-34408