HomeWalker 250-24516 Oxygen Sensor - Downstream or Upstream
Part #: 250-24516

Walker 250-24516 Oxygen Sensor - Downstream or Upstream

Walker Products OE, Downstream
10 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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OE Direct Replacement — Bolt-on fit, no modifications needed
Walker Products OE, Downstream
Fitment: BMW, 323is, 323i, and Z3
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Overview of Walker 250-24516 Oxygen Sensor for BMW Models

The Walker 250-24516 oxygen sensor is designed specifically for select BMW vehicles, including the 323i, 323is, and Z3 models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data to the engine management system.

  • Heated oxygen sensor with 4 wires for reliable operation
  • Specific fit for BMW 323i, 323is, and Z3 models
  • Threaded mounting type with 18.0 mm thread diameter
  • Radiused polygon male connector for secure electrical connection
  • Wiring harness length of 13.31 inches and overall length of 16.85 inches
  • Wire gauge measurement of 20 for durability and signal integrity

Detailed Features and Specifications

This Walker Products OE oxygen sensor (part number 250-24516) is engineered with a heated sensor element to provide faster response times and improved emissions control. The sensor includes four wires, allowing for both sensor heating and signal transmission. Its radiused polygon male connector ensures a precise and secure fit, reducing the risk of electrical issues. The threaded mounting type with an 18.0 mm diameter allows for straightforward installation in the exhaust system of compatible BMW vehicles. The wiring harness length of 13.31 inches and overall length of 16.85 inches provide adequate reach and flexibility during installation.

Walker Products OE Brand Line Information

The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed factory specifications. This oxygen sensor is part of that line, ensuring compatibility and performance consistent with the original sensor installed on BMW 323i, 323is, and Z3 models. Choosing a Walker Products OE sensor helps maintain the integrity of the vehicle’s emissions system and engine management.

Common Applications and Issues Addressed

  • Restores accurate air-fuel ratio readings for efficient combustion
  • Helps resolve rough idling and engine hesitation caused by faulty sensors
  • Reduces increased emissions and potential failed emissions tests
  • Prevents check engine light triggers related to oxygen sensor faults
  • Improves fuel economy by ensuring proper sensor feedback

Installation Notes and Tips

When installing the Walker 250-24516 oxygen sensor, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the threaded mounting hole. Confirm the connector matches the radiused polygon male design for a secure connection. Verify the wiring harness length and routing to prevent strain or interference with other components. Follow manufacturer torque specifications for proper sensor installation.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. This part number 250-24516 undergoes rigorous testing to comply with emissions regulations and OEM requirements. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.

BrandWalker
Part Number250-24516
PositionWalker Products OE, Downstream
Connector GenderMale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length16.85
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity4
Wiring Harness Length13.31

This part fits 10 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
1999BMW323is2.5LL6GASDownstreamDownstream oxygen sensor compatible with cylinders 4-6.; Walker Products OE
1999BMW323is2.5LL6GASDownstreamDownstream oxygen sensor for cylinders 1-3.; Walker Products OE
1999BMW323is2.5LL6GASDownstreamCylinder 1-3 Downstream Oxygen Sensor; Walker Products OE
1998BMW323i2.5LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products OE
1998BMW323is2.5LL6GASDownstreamDownstream oxygen sensor compatible with cylinders 4-6.; Walker Products OE
1998BMW323is2.5LL6GASDownstreamDownstream oxygen sensor for cylinders 1-3.; Walker Products OE
1998BMW323is2.5LL6GASDownstreamCylinder 1-3 Downstream Oxygen Sensor; Walker Products OE
1998BMWZ32.8LL6GASUpstreamOxygen sensor fits cylinders 1-3 for upstream installation.; Walker Products OE
1998BMWZ32.8LL6GASUpstreamUpstream oxygen sensor for cylinders 4-6.; Walker Products OE
1997BMWZ32.8LL6GASUpstreamInstall upstream oxygen sensor for optimal performance.; Walker Products OE

* 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.