Walker
Walker Products Aftermarket

Walker 350-33046 Oxygen Sensor - Upstream

Brand Walker 350-33046
Position Upstream
Connector Gender Female
Connector Shape Radiused Polygon
Mounting Type Threaded
Overall Length 35.94
Sensor Type Heated
Thread Diameter 18.0
Universal Or Specific Fit Specific
Wire Gauge Measurement 20
Wire Quantity 3
Wiring Harness Length 32.4
Product line Walker Products Aftermarket
Fits Alfa Romeo

OE replacement. Engineered for specific application fit and ECU feedback.

Heated sensor. Helps maintain accurate diagnostic response.

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

$67.50Free shipping
In stock · usually ships same day before 1pm CST
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Step 2 — Quantity
Order total $67.50
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Walker 350-33046 Oxygen Sensor Overview

Walker Products 350-33046 is a heated oxygen sensor built as a specific-fit OE-style replacement for the correct application and sensor location. It is engineered to provide the ECU with the feedback needed for fuel control and emissions monitoring on the vehicle.

For drivers diagnosing a check engine light, poor fuel economy, or elevated exhaust emissions, this Walker Products Aftermarket oxygen sensor is designed to restore accurate exhaust-gas feedback. It is a direct-fit threaded sensor with a 3-wire heated design, a female connector, and a radiused polygon connector shape.

Key Features

  • Heated oxygen sensor for ECU feedback and emissions control
  • Specific-fit design for the intended vehicle application
  • 3-wire configuration with 20-gauge wiring
  • 32.4 in. wiring harness length for the application
  • Threaded mounting type with 18.0 mm thread diameter
  • Radiused polygon connector shape with female terminal end
  • Overall length: 35.94 in.

Product Details

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors developed as OE replacement parts for a wide range of vehicles. Part number 350-33046 is built for the specified fitment position and is intended to deliver the diagnostic signal the ECU expects from the exhaust stream. If the original sensor is slow, damaged, or no longer reporting correctly, the engine may run rich or lean, fuel consumption can rise, emissions can increase, and the malfunction indicator light can illuminate. This part number, 350-33046, is a practical choice when servicing a vehicle that needs a direct replacement oxygen sensor.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

  • Check engine light related to oxygen sensor performance
  • Poor fuel economy caused by inaccurate exhaust feedback
  • Rough engine operation from incorrect air-fuel correction
  • Increased exhaust emissions from a failing sensor
  • Fault codes stored in the ECU for sensor-related issues

Installation Notes

Confirm the sensor location, connector style, thread diameter, and harness length before installation. Inspect the wiring harness and connector for heat damage, corrosion, or physical wear, since damaged wiring can shorten sensor life and affect readings. For best results, verify the vehicle application by year, make, model, and position before replacing the original unit. Compatible With specific vehicle applications only; use the exact OE-style location and connector match when servicing a Honda Civic, Toyota Corolla, or Ford Focus application if listed in your catalog lookup.

Quality Assurance

Walker Products has manufactured engine management components since 1946 and operates with ISO 9001/TS 16949 certification. The 350-33046 oxygen sensor is produced as an application-specific replacement to support proper ECU feedback and consistent sensor performance.

This part fits 0 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes