HomeEmission Control > SensorsWalker 350-34252 Oxygen Sensor - Upstream
Part #: 350-34252

Walker 350-34252 Oxygen Sensor - Upstream

Walker Products Aftermarket, Upstream
18 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
Walker Products Aftermarket, Upstream
Fitment: Toyota, MR2 and Celica
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker 350-34252 Oxygen Sensor for Toyota Celica and MR2

The Walker 350-34252 oxygen sensor is designed specifically for Toyota Celica and MR2 models, ensuring precise emission control and engine performance. This heated oxygen sensor features a flange mount design and a radiused polygon male connector for secure and accurate installation.

Key Features of Walker 350-34252 Oxygen Sensor

  • Heated sensor type for faster warm-up and accurate readings
  • Specific fitment for Toyota Celica and MR2 vehicles
  • 10.35-inch wiring harness length with 4 wires of 20 gauge measurement
  • Radiused polygon male connector for reliable electrical connection
  • 18.0 mm thread diameter and flange mount for secure installation
  • Overall length of 13.9 inches to fit OEM specifications

Detailed Description of Walker Products Aftermarket Oxygen Sensor

This oxygen sensor is part of the Walker Products Aftermarket line, which focuses on providing reliable emission control components tailored to specific vehicle applications. The 350-34252 sensor is engineered to meet the exact specifications required by Toyota Celica and MR2 models, ensuring compatibility and optimal performance. The heated sensor element allows for quicker activation, improving fuel efficiency and reducing emissions during cold starts. The 4-wire design supports both sensor heating and signal transmission, while the radiused polygon male connector ensures a secure and corrosion-resistant connection. The flange mount and 18.0 mm thread diameter provide a stable and OEM-compliant fit.

Common Applications and Issues Addressed

  • Helps maintain proper air-fuel mixture for Toyota Celica and MR2 engines
  • Reduces emissions by accurately monitoring exhaust gases
  • Prevents engine performance issues related to faulty oxygen sensors
  • Addresses check engine light triggers caused by sensor failure
  • Improves fuel economy by providing precise sensor data to the ECU

Installation Notes and Tips

  • Ensure compatibility with Toyota Celica and MR2 models before installation
  • Use proper tools to avoid damaging the 18.0 mm threaded sensor
  • Check wiring harness length (10.35 inches) for fitment in your vehicle
  • Confirm connector type matches the vehicle’s wiring harness (radiused polygon male)
  • Follow manufacturer torque specifications for flange mount installation

Quality Assurance and Warranty Information

Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards for emission control components. The 350-34252 sensor undergoes rigorous testing to ensure durability and reliable performance in Toyota Celica and MR2 vehicles. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship to support long-term use.

BrandWalker
Part Number350-34252
PositionWalker Products Aftermarket, Upstream
Connector GenderMale
Connector ShapeRadiused Polygon
Mounting TypeFlange Mount
Overall Length13.9
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity4
Wiring Harness Length10.35

This part fits 18 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
1995ToyotaMR22.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
1995ToyotaMR22.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
1994ToyotaMR22.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
1994ToyotaMR22.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
1993ToyotaCelica2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
1993ToyotaCelica2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
1993ToyotaMR22.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
1993ToyotaMR22.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
1992ToyotaCelica2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
1992ToyotaCelica2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
1992ToyotaMR22.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
1992ToyotaMR22.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
1991ToyotaCelica2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
1991ToyotaCelica2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
1991ToyotaMR22.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
1991ToyotaMR22.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
1990ToyotaCelica2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
1990ToyotaCelica2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket

* 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:

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