HomeEmission Control > SensorsWalker 350-34062 Oxygen Sensor - Upstream
Part #: 350-34062

Walker 350-34062 Oxygen Sensor - Upstream

Walker Products Aftermarket, Upstream
22 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: BMW, 535i, M5, 735i, 735iL, 635CSi, and 535is
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker 350-34062 Oxygen Sensor for BMW Models

The Walker 350-34062 oxygen sensor is designed specifically for select BMW vehicles, including the 535i, 535is, 635CSi, 735i, 735iL, and M5 models. This heated oxygen sensor provides accurate emissions monitoring to help maintain engine performance and comply with emission standards.

  • Heated oxygen sensor with threaded mounting type
  • 56.42 inches wiring harness length for flexible installation
  • 20 gauge wire measurement with 4 wires for reliable signal transmission
  • Radiused polygon female connector for secure fitment
  • 18.0 mm thread diameter and 59.96 inches overall length
  • Specific fitment for BMW 535i, 535is, 635CSi, 735i, 735iL, and M5

Detailed Product Features and Specifications

This Walker Products Aftermarket oxygen sensor (part number 350-34062) is engineered with a heated sensor element to ensure faster warm-up times and improved accuracy in oxygen level detection. The sensor’s 56.42-inch wiring harness length and 20 gauge wire size provide durability and ease of routing within the engine bay. Featuring a radiused polygon female connector, this sensor ensures a secure and precise connection to the vehicle’s wiring harness. The threaded mounting type with an 18.0 mm thread diameter allows for straightforward installation in the designated exhaust port. The overall length of 59.96 inches accommodates proper placement and fitment in the exhaust system of compatible BMW models.

Walker Products Aftermarket Line Information

The Walker Products Aftermarket line focuses on providing reliable emission control components designed to meet or exceed OEM specifications. This oxygen sensor is part of that line, offering a direct replacement solution tailored for specific BMW vehicles. The product line emphasizes quality construction and compatibility to support emission system performance and regulatory compliance.

Common Applications and Issues Addressed

  • Replacement for faulty or failing oxygen sensors in BMW 535i, 535is, 635CSi, 735i, 735iL, and M5
  • Helps resolve engine performance issues related to incorrect air-fuel mixture readings
  • Addresses check engine light triggers caused by sensor malfunctions
  • Improves fuel efficiency by providing accurate oxygen level data to the engine control unit
  • Supports emission system compliance by monitoring exhaust gases effectively

Installation Notes and Tips

  • Ensure the engine and exhaust system are cool before installation to avoid burns
  • Use appropriate tools to remove the old sensor and install the new threaded sensor securely
  • Verify the connector type matches the vehicle harness before installation
  • Check wiring harness routing to prevent damage or interference with moving parts
  • Clear any diagnostic trouble codes after installation to reset the engine control unit

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards for durability and performance. While specific warranty details for part number 350-34062 should be confirmed with the supplier, Walker typically offers coverage against defects in materials and workmanship to ensure reliable operation within the vehicle’s emission system.

BrandWalker
Part Number350-34062
PositionWalker Products Aftermarket, Upstream
Connector GenderFemale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length59.96
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity4
Wiring Harness Length56.42

This part fits 22 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
1993BMW535i3.5LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products Aftermarket
1993BMWM53.6LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products Aftermarket
1992BMW535i3.5LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products Aftermarket
1992BMW735i3.5LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products Aftermarket
1992BMW735iL3.5LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products Aftermarket
1992BMWM53.6LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products Aftermarket
1991BMW535i3.5LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products Aftermarket
1991BMW735i3.5LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products Aftermarket
1991BMW735iL3.5LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products Aftermarket
1991BMWM53.6LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products Aftermarket
1990BMW535i3.5LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products Aftermarket
1990BMW735i3.5LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products Aftermarket
1990BMW735iL3.5LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products Aftermarket
1989BMW535i3.5LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products Aftermarket
1989BMW635CSi3.5LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products Aftermarket
1989BMW735i3.5LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products Aftermarket
1989BMW735iL3.5LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products Aftermarket
1988BMW535i3.5LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products Aftermarket
1988BMW535is3.5LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products Aftermarket
1988BMW635CSi3.5LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products Aftermarket
1988BMW735i3.5LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products Aftermarket
1988BMW735iL3.5LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; 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.