HomeEmission Control > SensorsWalker 350-35070 Oxygen Sensor - Upstream Left
Part #: 350-35070

Walker 350-35070 Oxygen Sensor - Upstream Left

Walker Products Aftermarket, Upstream Left
⚙️ 28 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$104.65Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ 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 Left
🚗Fitment: Ford, Lincoln, and Porsche, Explorer, Police Interceptor Utility, Aviator, and Macan
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker 350-35070 Oxygen Sensor

The Walker 350-35070 oxygen sensor is designed specifically for select Ford, Lincoln, and Porsche models, including the Aviator, Explorer, and Macan. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data.

  • Heated sensor type for faster response times
  • Specific fit for Ford Aviator, Lincoln Explorer, and Porsche Macan
  • 35.03-inch wiring harness length for flexible installation
  • 20 gauge wire measurement with 5 wires for reliable signal transmission
  • Radiused polygon male connector for secure connection
  • Threaded mounting type with 18.0 mm thread diameter
  • Overall length of 41.33 inches for proper fitment

Detailed Product Description

This Walker Products Aftermarket oxygen sensor (part number 350-35070) is engineered to meet the exact specifications of your vehicle’s emission system. Featuring a heated sensor element, it quickly reaches operating temperature to provide accurate oxygen level readings. The 5-wire design and 20 gauge wiring ensure consistent electrical signals, while the 35.03-inch wiring harness length offers installation flexibility. The radiused polygon male connector and threaded mounting type with an 18.0 mm diameter guarantee a secure and precise fit. Compatible with Ford Aviator, Lincoln Explorer, and Porsche Macan models, this sensor supports proper engine management and emissions control.

Walker Products Aftermarket Line Information

The Walker Products Aftermarket line focuses on delivering reliable emission control components that meet or exceed OEM standards. This oxygen sensor is part of that line, providing a direct replacement solution designed for specific vehicle applications. The product line emphasizes quality construction and fitment accuracy, ensuring compatibility with the targeted Ford, Lincoln, and Porsche models.

Common Applications and Issues Addressed

  • Restores accurate air-fuel ratio readings for improved fuel efficiency
  • Resolves check engine light triggers related to oxygen sensor faults
  • Helps reduce harmful emissions by maintaining proper combustion
  • Prevents engine performance issues caused by faulty sensor signals
  • Supports smooth engine idling and acceleration response

Installation Notes and Tips

When installing the Walker 350-35070 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the correct tools to remove the old sensor and avoid damaging the wiring harness. Verify the connector shape and gender match the vehicle’s harness for a secure connection. Thread the sensor carefully into the exhaust manifold or pipe to the specified torque to prevent leaks or damage.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards. While specific warranty details for part number 350-35070 should be confirmed with the supplier, Walker typically offers coverage against defects in materials and workmanship to ensure reliable performance over time.

BrandWalker
Part Number350-35070
PositionWalker Products Aftermarket, Upstream Left
Connector GenderMale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length41.33
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity5
Wiring Harness Length35.03

This part fits 28 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersFuel TypePositionNotes
2024FordExplorer3.0LV6Upstream FrontOE Replacement
2024LincolnAviator3.0LV6GASUpstream LeftOE Replacement
2023FordExplorer3.0LV6Upstream LeftOE Replacement
2023LincolnAviator3.0LV6Upstream LeftOE Replacement
2022FordExplorer3.0LV6Upstream LeftOE Replacement
2022LincolnAviator3.0LV6Upstream LeftOE Replacement
2021FordExplorer3.0LV6GASUpstream LeftUpstream oxygen sensor before catalytic converter on left side.; Walker Products Aftermarket
2021FordExplorer3.0LV6GASUpstream LeftUpstream oxygen sensor for Bank 2 Sensor 1.; Walker Products Aftermarket
2021LincolnAviator3.0LV6ELECTRIC/GASUpstream LeftUpstream oxygen sensor before catalytic converter on left side.; Walker Products Aftermarket
2021LincolnAviator3.0LV6GASUpstream LeftUpstream oxygen sensor before catalytic converter on left side.; Walker Products Aftermarket
2021LincolnAviator3.0LV6ELECTRIC/GASUpstream LeftUpstream oxygen sensor for Bank 2 Sensor 1.; Walker Products Aftermarket
2021LincolnAviator3.0LV6GASUpstream LeftUpstream oxygen sensor for Bank 2 Sensor 1.; Walker Products Aftermarket
2020FordExplorer3.0LV6GASUpstream LeftUpstream oxygen sensor before catalytic converter on left side.; Walker Products Aftermarket
2020FordExplorer3.0LV6GASUpstream LeftUpstream oxygen sensor for Bank 2 Sensor 1.; Walker Products Aftermarket
2020LincolnAviator3.0LV6ELECTRIC/GASUpstream LeftUpstream oxygen sensor before catalytic converter on left side.; Walker Products Aftermarket
2020LincolnAviator3.0LV6GASUpstream LeftUpstream oxygen sensor before catalytic converter on left side.; Walker Products Aftermarket
2020LincolnAviator3.0LV6ELECTRIC/GASUpstream LeftUpstream oxygen sensor for Bank 2 Sensor 1.; Walker Products Aftermarket
2020LincolnAviator3.0LV6GASUpstream LeftUpstream oxygen sensor for Bank 2 Sensor 1.; Walker Products Aftermarket
2018PorscheMacanTurbo3.6LV6GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2018PorscheMacanS3.0LV6GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2018PorscheMacanGTS3.0LV6GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2017PorscheMacanTurbo3.6LV6GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2017PorscheMacanS3.0LV6GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2017PorscheMacanGTS3.0LV6GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2016PorscheMacanTurbo3.6LV6GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2016PorscheMacanS3.0LV6GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2015PorscheMacanTurbo3.6LV6GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products Aftermarket
2015PorscheMacanS3.0LV6GASUpstream LeftInstall upstream oxygen sensor on the left side.; 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.