HomeEmission Control > SensorsWalker 250-21029 Oxygen Sensor - Upstream
Part #: 250-21029

Walker 250-21029 Oxygen Sensor - Upstream

Walker Products OE, Upstream
⚙️ 47 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Walker Products OE, Upstream
🚗Fitment: Saturn, SC1, SC2, SL, SL1, SL2, SW1, SW2, and SC
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Overview of Walker 250-21029 Oxygen Sensor for Saturn Vehicles

The Walker 250-21029 oxygen sensor is designed specifically for select Saturn models, including SC, SC1, SC2, SL, SL1, SL2, SW1, and SW2. This non-heated oxygen sensor features a precise fit and reliable performance to support your vehicle's emission control system.

  • Wiring harness length: 2.68 inches
  • Wire gauge measurement: 20 gauge
  • Sensor type: Non-heated oxygen sensor
  • Specific fit for Saturn models
  • Single wire configuration
  • Radiused polygon female connector
  • Thread diameter: 14.0 mm
  • Overall length: 6.22 inches
  • Threaded mounting type

Detailed Product Description

The Walker 250-21029 oxygen sensor is engineered to meet the exact specifications required by various Saturn models such as the SC, SL, and SW series. This non-heated sensor uses a single 20-gauge wire and a radiused polygon female connector to ensure a secure and accurate connection. With a wiring harness length of 2.68 inches and an overall length of 6.22 inches, it is designed for a threaded mounting type with a 14.0 mm thread diameter, providing a precise and stable installation.

This oxygen sensor is part of the Walker Products OE line, which focuses on delivering original equipment quality parts that match the fit, form, and function of the factory components. The Walker Products OE line is known for its adherence to strict manufacturing standards, ensuring compatibility and durability for emission control sensors like this oxygen sensor.

Common Applications and Issues Addressed

  • Helps maintain optimal air-fuel mixture for Saturn SC and SL models
  • Prevents engine performance issues related to faulty oxygen sensors
  • Reduces emissions by providing accurate feedback to the engine control unit
  • Addresses check engine light triggers related to oxygen sensor faults
  • Supports fuel efficiency by ensuring proper sensor operation

Installation Notes and Tips

  • Ensure the vehicle is cool before removing the old sensor to avoid burns
  • Use appropriate tools for threaded mounting to prevent damage to the sensor or exhaust manifold
  • Verify connector compatibility with the radiused polygon female connector on the vehicle wiring harness
  • Check wiring harness length and routing to avoid tension or interference
  • Follow torque specifications for the 14.0 mm thread diameter to secure the sensor properly

Quality Assurance and Warranty

The Walker 250-21029 oxygen sensor is manufactured under strict quality control standards as part of the Walker Products OE line. This ensures that the sensor meets or exceeds original equipment specifications for fit and function. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship to provide confidence in product reliability.

BrandWalker
Part Number250-21029
PositionWalker Products OE, Upstream
Connector GenderFemale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length6.22
Sensor TypeNon Heated
Thread Diameter14.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity1
Wiring Harness Length2.68

This part fits 47 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
1994SaturnSC11.9LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1994SaturnSC11.9LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1994SaturnSC21.9LL4GASUpstreamNon California emissions certified; Bank 1 Sensor 1; Upstream position; Not suitable for California emissionscertified vehicles; Walker Products OE
1994SaturnSC21.9LL4GASUpstreamFor vehicles without California and Federal Emissions - Upstream Bank 1 Sensor 1.; Walker Products OE
1994SaturnSC21.9LL4GASUpstreamUpstream oxygen sensor for bank 1 sensor 1 incompatible with California-ESV vehicles.; Walker Products OE
1994SaturnSL1.9LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1994SaturnSL1.9LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1994SaturnSL11.9LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1994SaturnSL11.9LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1994SaturnSL21.9LL4GASUpstreamNon California emissions certified; Bank 1 Sensor 1; Upstream position; Not suitable for California emissionscertified vehicles; Walker Products OE
1994SaturnSL21.9LL4GASUpstreamFor vehicles without California and Federal Emissions - Upstream Bank 1 Sensor 1.; Walker Products OE
1994SaturnSL21.9LL4GASUpstreamUpstream oxygen sensor for bank 1 sensor 1 incompatible with California-ESV vehicles.; Walker Products OE
1994SaturnSW11.9LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1994SaturnSW11.9LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1994SaturnSW21.9LL4GASUpstreamNon California emissions certified; Bank 1 Sensor 1; Upstream position; Not suitable for California emissionscertified vehicles; Walker Products OE
1994SaturnSW21.9LL4GASUpstreamFor vehicles without California and Federal Emissions - Upstream Bank 1 Sensor 1.; Walker Products OE
1994SaturnSW21.9LL4GASUpstreamUpstream oxygen sensor for bank 1 sensor 1 incompatible with California-ESV vehicles.; Walker Products OE
1993SaturnSC11.9LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1993SaturnSC11.9LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1993SaturnSC21.9LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1993SaturnSC21.9LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1993SaturnSL1.9LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1993SaturnSL1.9LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1993SaturnSL11.9LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1993SaturnSL11.9LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1993SaturnSL21.9LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1993SaturnSL21.9LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1993SaturnSW11.9LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1993SaturnSW11.9LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1993SaturnSW21.9LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1993SaturnSW21.9LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1992SaturnSC1.9LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1992SaturnSC1.9LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1992SaturnSL1.9LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1992SaturnSL1.9LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1992SaturnSL11.9LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1992SaturnSL11.9LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1992SaturnSL21.9LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1992SaturnSL21.9LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1991SaturnSC1.9LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1991SaturnSC1.9LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1991SaturnSL1.9LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1991SaturnSL1.9LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1991SaturnSL11.9LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1991SaturnSL11.9LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE
1991SaturnSL21.9LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
1991SaturnSL21.9LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; 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.