HomeEmission Control > SensorsWalker 350-32004 Oxygen Sensor - Downstream or Upstream
Part #: 350-32004

Walker 350-32004 Oxygen Sensor - Downstream or Upstream

Walker Products Aftermarket, Downstream
11 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, Downstream
Fitment: Geo and Toyota, Prizm, Camry, and Corolla
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker 350-32004 Oxygen Sensor

The Walker 350-32004 oxygen sensor is designed specifically for select Geo and Toyota models, including the Camry, Corolla, and Prizm. This non-heated oxygen sensor features a threaded mounting type and a radiused polygon male connector, ensuring precise fitment and reliable performance.

  • Wiring harness length: 9.96 inches
  • Wire gauge measurement: 20 gauge
  • Sensor type: Non-heated oxygen sensor
  • Wire quantity: 2 wires
  • Connector shape: Radiused polygon
  • Connector gender: Male
  • Thread diameter: 18.0 mm
  • Overall length: 13.5 inches
  • Mounting type: Threaded

Walker Products Aftermarket Line Details

This oxygen sensor is part of the Walker Products Aftermarket line, which focuses on providing specific-fit emission control components. Walker Products Aftermarket parts are engineered to meet or exceed OEM specifications, offering reliable sensor performance tailored to the exact requirements of your vehicle’s emission system.

Product Description and Features

The Walker 350-32004 oxygen sensor is a specific-fit, non-heated sensor designed to replace factory-installed sensors on compatible Geo and Toyota vehicles. Its 20-gauge wiring and 9.96-inch harness length provide a secure electrical connection, while the radiused polygon male connector ensures proper mating with the vehicle’s wiring harness. The threaded mounting type with an 18.0 mm thread diameter allows for straightforward installation and a secure fit. With an overall length of 13.5 inches, this sensor is engineered to fit precisely in the designated sensor port.

Compatible Vehicles and Applications

  • Geo Prizm oxygen sensor replacement
  • Toyota Camry oxygen sensor repair
  • Toyota Corolla emission sensor upgrade

Common Issues Addressed by This Oxygen Sensor

  • Incorrect air-fuel mixture readings causing poor engine performance
  • Check engine light triggered by faulty oxygen sensor signals
  • Increased emissions due to sensor failure
  • Reduced fuel efficiency from inaccurate sensor data
  • Engine hesitation or rough idling related to sensor malfunction

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns. Use the correct tools to remove the old sensor and avoid damaging the threaded mounting hole. Verify the connector shape and gender match the vehicle’s wiring harness before installation. Tighten the sensor to the manufacturer’s torque specifications to prevent leaks or sensor damage.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet strict quality standards and are tested for durability and performance. The 350-32004 part number comes with a limited warranty covering defects in materials and workmanship, providing confidence in the sensor’s reliability for your Geo or Toyota vehicle.

BrandWalker
Part Number350-32004
PositionWalker Products Aftermarket, Downstream
Connector GenderMale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length13.5
Sensor TypeNon Heated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity2
Wiring Harness Length9.96

This part fits 11 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
1992GeoPrizm1.6LL4GASDownstreamDownstream oxygen sensor for B1S2 position in California emissions.; Walker Products Aftermarket
1992GeoPrizm1.6LL4GASDownstreamDownstream oxygen sensor compatible with California-ESV vehicles in bank 1 position 2.; Walker Products Aftermarket
1991GeoPrizm1.6LL4GASDownstreamDownstream oxygen sensor for B1S2 position in California emissions.; Walker Products Aftermarket
1991GeoPrizm1.6LL4GASDownstreamDownstream oxygen sensor compatible with California-ESV vehicles in bank 1 position 2.; Walker Products Aftermarket
1990GeoPrizm1.6LL4GASDownstreamDownstream oxygen sensor for B1S2 position in California emissions.; Walker Products Aftermarket
1990GeoPrizm1.6LL4GASDownstreamDownstream oxygen sensor compatible with California-ESV vehicles in bank 1 position 2.; Walker Products Aftermarket
1989ToyotaCamry2.5LV6GASDownstreamOxygen Sensor for California vehicles with ESV regulations.; Walker Products Aftermarket
1989ToyotaCorolla1.6LL4GASUpstreamNon California emissions certified; Bank 1 Sensor 1; Upstream position; Not suitable for California emissionscertified vehicles; Walker Products Aftermarket
1989ToyotaCorolla1.6LL4GASUpstreamFor vehicles without California and Federal Emissions - Upstream Bank 1 Sensor 1.; Walker Products Aftermarket
1989ToyotaCorolla1.6LL4GASUpstreamUpstream oxygen sensor for bank 1 sensor 1 incompatible with California-ESV vehicles.; Walker Products Aftermarket
1988ToyotaCamry2.5LV6GASDownstreamOxygen Sensor for California vehicles with ESV regulations.; 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.