HomeEmission Control > SensorsWalker 350-34403 Oxygen Sensor - Downstream or Upstream
Part #: 350-34403

Walker 350-34403 Oxygen Sensor - Downstream or Upstream

Walker Products Aftermarket, Downstream
13 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: Acura and Honda, EL, Accord, and Prelude
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker 350-34403 Oxygen Sensor

The Walker 350-34403 oxygen sensor is designed specifically for Acura and Honda vehicles, including the Accord, EL, and Prelude models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.

  • Heated sensor type for faster response times
  • Specific fit for Acura and Honda Accord, EL, and Prelude
  • 16.26-inch wiring harness length with 20-gauge wire
  • Four-wire configuration with radiused polygon female connector
  • Threaded mounting type with 18.0 mm thread diameter
  • Overall length of 19.8 inches for precise installation

Detailed Product Description

This oxygen sensor from Walker Products Aftermarket is engineered to meet the exact specifications required by Acura and Honda vehicles such as the Accord, EL, and Prelude. The sensor features a heated element that allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The 16.26-inch wiring harness with 20-gauge wires and a four-wire setup ensures reliable electrical connections and signal transmission. The radiused polygon female connector provides a secure fit, while the threaded mounting type with an 18.0 mm diameter allows for straightforward installation. The overall length of 19.8 inches accommodates proper placement within the exhaust system.

Walker Products Aftermarket Line

The Walker Products Aftermarket line focuses on delivering emission control components that meet or exceed OEM standards. This oxygen sensor is part of that line, offering a direct replacement solution tailored for specific Acura and Honda models. The product line emphasizes compatibility and durability, ensuring that each sensor integrates seamlessly with the vehicle’s existing systems.

Common Applications and Issues Addressed

  • Restores accurate air-fuel ratio readings for engine control units
  • Helps resolve rough idling and engine hesitation
  • Reduces increased emissions and failed emissions tests
  • Prevents poor fuel economy caused by faulty sensors
  • Eliminates check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

  • Ensure the vehicle is cool before sensor removal to avoid burns
  • Use appropriate oxygen sensor socket for threaded installation
  • Verify connector type matches the vehicle harness (radiused polygon female)
  • Do not over-tighten the sensor; follow torque specifications
  • Inspect wiring harness for damage before installation

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. The 350-34403 part number undergoes rigorous testing to comply with emission control requirements. Warranty coverage details should be confirmed with the product documentation or supplier.

BrandWalker
Part Number350-34403
PositionWalker Products Aftermarket, Downstream
Connector GenderFemale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length19.8
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity4
Wiring Harness Length16.26

This part fits 13 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersFuel TypePositionNotes
2003AcuraELBase1.7LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
1993HondaAccord2.2LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
1993HondaAccord2.2LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
1993HondaPreludeS2.2LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
1993HondaPreludeS2.2LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
1992HondaAccord2.2LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
1992HondaAccord2.2LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
1992HondaPreludeS2.2LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
1992HondaPreludeS2.2LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
1991HondaAccord2.2LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
1991HondaAccord2.2LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
1990HondaAccord2.2LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
1990HondaAccord2.2LL4GASUpstreamFront 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.