HomeEmission Control > SensorsWalker 250-24405 Oxygen Sensor
Part #: 250-24405

Walker 250-24405 Oxygen Sensor

Walker Products OE, Upstream Right, Upstream Left, Downstream Right, and Downstream Left
14 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Walker Products OE, Upstream Right, Upstream Left, Downstream Right, and Downstream Left
Fitment: Audi, 100, 100 Quattro, and A6
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Overview of Walker 250-24405 Oxygen Sensor for Audi Vehicles

The Walker 250-24405 oxygen sensor is designed specifically for select Audi models, including the Audi 100, 100 Quattro, and A6. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data to the vehicle’s engine management system.

  • Heated oxygen sensor with 4-wire design for reliable operation
  • Specific fit for Audi 100, 100 Quattro, and A6 models
  • Threaded mounting type with 18.0 mm thread diameter
  • Radiused polygon male connector for secure electrical connection
  • Wiring harness length of 45.98 inches and overall length of 49.53 inches
  • Wire gauge measurement of 20 for durability and signal integrity

Detailed Features and Specifications

This Walker oxygen sensor (part number 250-24405) features a heated sensor type that allows for faster warm-up times and improved sensor responsiveness. The 4-wire configuration supports both the sensor signal and heater circuit, ensuring consistent performance under various operating conditions. The sensor’s threaded mounting type with an 18.0 mm diameter thread provides a secure and precise fit in the exhaust system. The radiused polygon male connector is designed to match the factory wiring harness, facilitating a direct replacement without modification. With a wiring harness length of 45.98 inches and an overall length of 49.53 inches, this sensor is engineered to fit the specific routing and installation requirements of compatible Audi models.

Walker Products OE Brand Line

The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed factory specifications. This oxygen sensor is part of the Walker Products OE range, ensuring compatibility and performance consistent with the original sensor installed on Audi 100, 100 Quattro, and A6 vehicles. The OE line emphasizes precise fitment and reliable operation to maintain emissions compliance and engine efficiency.

Applications and Common Issues Addressed

  • Restores accurate air-fuel ratio readings for improved fuel economy
  • Resolves check engine light triggers related to oxygen sensor faults
  • Helps reduce harmful emissions by ensuring proper catalytic converter function
  • Eliminates rough idling or engine hesitation caused by faulty sensors
  • Prevents failed emissions tests due to sensor malfunctions

Installation Notes and Tips

When installing the Walker 250-24405 oxygen sensor, ensure the vehicle is cool to avoid burns. Use an oxygen sensor socket or appropriate tool to remove the old sensor carefully. Verify the connector type matches the factory harness to avoid electrical issues. Thread the sensor carefully to prevent cross-threading and torque to manufacturer specifications. The 45.98-inch wiring harness length allows for proper routing without strain or interference.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet stringent quality standards for durability and performance. While specific warranty details are not provided here, Walker typically offers coverage against defects in materials and workmanship. Using this sensor helps maintain emissions compliance and engine management accuracy for Audi 100, 100 Quattro, and A6 models.

BrandWalker
Part Number250-24405
PositionWalker Products OE, Upstream Right, Upstream Left, Downstream Right, and Downstream Left
Wiring Harness Length45.98
Wire Gauge Measurement20
Sensor TypeHeated
Universal Or Specific FitSpecific
Wire Quantity4
Connector ShapeRadiused polygon
Connector GenderMale
Thread Diameter18.0
Overall Length49.53
Mounting TypeThreaded

This part fits 14 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
1997AudiA62.8LV6GASDownstream RightInstall downstream oxygen sensor on the right side.; Walker Products OE
1997AudiA62.8LV6GASDownstream LeftDownstream left oxygen sensor required.; Walker Products OE
1996AudiA62.8LV6GASDownstream RightInstall downstream oxygen sensor on the right side.; Walker Products OE
1996AudiA62.8LV6GASDownstream LeftDownstream left oxygen sensor required.; Walker Products OE
1995AudiA62.8LV6GASUpstream RightInstall upstream oxygen sensor on the right side.; Walker Products OE
1995AudiA62.8LV6GASUpstream LeftInstall upstream oxygen sensor on the left side.; Walker Products OE
1994Audi1002.8LV6GASUpstream RightFrom Chassis # 4A-R-062 001; De Chasis # 4A-R-062 001; Upstream; Right; Walker Products OE
1994Audi1002.8LV6GASUpstream LeftFrom Chassis # 4A-R-062 001; De Chasis # 4A-R-062 001; Upstream; Left; Walker Products OE
1994Audi1002.8LV6GASUpstream RightUpstream Oxygen Sensor for Chassis # 4A-R-062 001 on the right side; Walker Products OE
1994Audi1002.8LV6GASUpstream LeftFrom Chassis # 4A-R-062 001; Upstream; Left; Walker Products OE
1994Audi100 Quattro2.8LV6GASUpstream RightFrom Chassis # 4A-R-062 001; De Chasis # 4A-R-062 001; Upstream; Right; Walker Products OE
1994Audi100 Quattro2.8LV6GASUpstream LeftFrom Chassis # 4A-R-062 001; De Chasis # 4A-R-062 001; Upstream; Left; Walker Products OE
1994Audi100 Quattro2.8LV6GASUpstream RightUpstream Oxygen Sensor for Chassis # 4A-R-062 001 on the right side; Walker Products OE
1994Audi100 Quattro2.8LV6GASUpstream LeftFrom Chassis # 4A-R-062 001; Upstream; Left; Walker Products OE

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.