HomeEmission Control > SensorsWalker 350-34644 Oxygen Sensor
Part #: 350-34644

Walker 350-34644 Oxygen Sensor

Walker Products Aftermarket, Downstream
⚙️ 99 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Walker Products Aftermarket, Downstream
🚗Fitment: Mitsubishi, Eagle, and Plymouth, Lancer, Outlander, Diamante, Eclipse, Galant, Talon, Summit, Expo, Expo LRV, and Colt
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Overview of Walker 350-34644 Oxygen Sensor

The Walker 350-34644 oxygen sensor is designed specifically for select Mitsubishi models, including the Diamante, Eclipse, Expo, Expo LRV, Galant, Lancer, and Outlander. This heated oxygen sensor provides accurate emissions monitoring to help maintain engine performance and comply with emission standards.

  • Heated oxygen sensor with 4-wire design for precise readings
  • Specific fit for Mitsubishi vehicles ensuring proper installation
  • Threaded mounting type with 18.0 mm thread diameter
  • Radiused polygon male connector for secure electrical connection
  • Wiring harness length of 19.21 inches and overall length of 22.76 inches
  • Wire gauge measurement of 20 for reliable signal transmission

Detailed Product Description

This Walker oxygen sensor (part number 350-34644) is engineered to meet the exact specifications required by Mitsubishi vehicles such as the Diamante, Eclipse, and Lancer. Featuring a heated sensor type, it quickly reaches operating temperature to provide accurate oxygen level readings in the exhaust stream. The 4-wire configuration supports both the sensor signal and heater circuit, improving response time and durability. The sensor’s threaded mounting type with an 18.0 mm diameter ensures a secure fit in the exhaust manifold or pipe. Additionally, the radiused polygon male connector facilitates a reliable electrical connection, minimizing the risk of signal loss or corrosion.

Walker Products Aftermarket Line

Walker Products Aftermarket offers a range of emission control components designed to meet or exceed OEM standards. This product line focuses on delivering reliable, vehicle-specific parts that support emission system functionality and engine efficiency. The 350-34644 oxygen sensor is part of this line, providing a direct replacement solution for Mitsubishi models requiring precise sensor performance and fitment.

Common Applications and Issues Addressed

  • Restores accurate air-fuel mixture readings for optimal engine performance
  • Helps resolve check engine light triggers related to oxygen sensor faults
  • Reduces emissions by ensuring proper catalytic converter operation
  • Improves fuel economy by providing correct sensor data to the ECU
  • Prevents rough idling and engine hesitation caused by faulty sensors

Installation Notes and Tips

When installing the Walker 350-34644 oxygen sensor, ensure the vehicle is compatible with this specific part number and fitment. Use proper tools to avoid damaging the threaded sensor or connector. It is recommended to disconnect the battery before installation to prevent electrical shorts. Verify the wiring harness length and connector type match the vehicle’s existing setup for a seamless replacement.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards. While specific warranty details for part number 350-34644 should be confirmed at the point of purchase, Walker typically offers coverage against defects in materials and workmanship. This ensures dependable performance and longevity in emission control applications.

BrandWalker
Part Number350-34644
PositionWalker Products Aftermarket, Downstream
Connector GenderMale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length22.76
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity4
Wiring Harness Length19.21

This part fits 99 vehicles. Search below:

YearMakeModelSubmodelDrive TypeLitersCylindersFuel TypePositionNotes
2007MitsubishiLancer2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2006MitsubishiLancer2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2005MitsubishiLancer2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2004MitsubishiLancer2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2004MitsubishiLancer2.0LL4GASDownstreamTo 09/01/03; B1S2; Al 09/01/03; Downstream; Walker Products Aftermarket
2004MitsubishiLancer2.0LL4GASDownstreamTo 09/01/03; Al 09/01/03; Downstream; B1S2; Walker Products Aftermarket
2004MitsubishiLancer2.0LL4GASDownstream09/01/03 - downstream oxygen sensor for bank 1 sensor 2.; Walker Products Aftermarket
2003MitsubishiLancer2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2003MitsubishiOutlanderAWD2.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2002MitsubishiLancer2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2000MitsubishiDiamante3.5LV6GASUpstream RearNon California engine, no California engine, upstream position, rear location; Walker Products Aftermarket
2000MitsubishiDiamante3.5LV6GASUpstream FrontNon-Calif-ESV No Calif-ESV Upstream Front; Walker Products Aftermarket
2000MitsubishiDiamante3.5LV6GASDownstream RearDownstream Rear Oxygen Sensor for Non-Calif-ESV models.; Walker Products Aftermarket
2000MitsubishiDiamante3.5LV6GASDownstream FrontNon Calif-ESV No Calif-ESV Downstream Front; Walker Products Aftermarket
2000MitsubishiDiamante3.5LV6GASUpstream RearNon Calif-ESV Upstream Rear Oxygen Sensor; Walker Products Aftermarket
2000MitsubishiDiamante3.5LV6GASUpstream FrontFits non-California emissions vehicles upstream of catalytic converter.; Walker Products Aftermarket
2000MitsubishiDiamante3.5LV6GASDownstream RearNon Calif-ESV; Downstream; Rear; Walker Products Aftermarket
2000MitsubishiDiamante3.5LV6GASDownstream FrontNon Calif-ESV; Downstream; Front; Walker Products Aftermarket
2000MitsubishiEclipse3.0LV6GASUpstream RearNon California engine, no California engine, upstream position, rear location; Walker Products Aftermarket
2000MitsubishiEclipse3.0LV6GASUpstream FrontNon-Calif-ESV No Calif-ESV Upstream Front; Walker Products Aftermarket
2000MitsubishiEclipse2.4LL4GASUpstreamNon California emissions certified; Bank 1 Sensor 1; Upstream position; Not suitable for California emissionscertified vehicles; Walker Products Aftermarket
2000MitsubishiEclipse2.4LL4GASDownstreamDownstream oxygen sensor for B1S2, not for vehicles in California.; Walker Products Aftermarket
2000MitsubishiEclipse2.4LL4GASUpstreamFor vehicles without California and Federal Emissions - Upstream Bank 1 Sensor 1.; Walker Products Aftermarket
2000MitsubishiEclipse2.4LL4GASDownstreamDownstream Bank 1 Sensor 2 for Non-Calif-ESV vehicles.; Walker Products Aftermarket
2000MitsubishiEclipse3.0LV6GASUpstream RearNon Calif-ESV Upstream Rear Oxygen Sensor; Walker Products Aftermarket
2000MitsubishiEclipse3.0LV6GASUpstream FrontFits non-California emissions vehicles upstream of catalytic converter.; Walker Products Aftermarket
2000MitsubishiEclipse2.4LL4GASUpstreamUpstream oxygen sensor for bank 1 sensor 1 incompatible with California-ESV vehicles.; Walker Products Aftermarket
2000MitsubishiEclipse2.4LL4GASDownstreamDownstream oxygen sensor for second bank, sensor 1, non-California emissions.; Walker Products Aftermarket
2000MitsubishiGalant3.0LV6GASUpstreamNon Calif-ESV; No Calif-ESV; Upstream; Walker Products Aftermarket
2000MitsubishiGalant3.0LV6GASDownstreamDownstream placement for vehicles without California emissions certification.; Walker Products Aftermarket
2000MitsubishiGalant2.4LL4GASUpstreamNon California emissions certified; Bank 1 Sensor 1; Upstream position; Not suitable for California emissionscertified vehicles; Walker Products Aftermarket
2000MitsubishiGalant2.4LL4GASDownstreamDownstream oxygen sensor for B1S2, not for vehicles in California.; Walker Products Aftermarket
2000MitsubishiGalant2.4LL4GASUpstreamFor vehicles without California and Federal Emissions - Upstream Bank 1 Sensor 1.; Walker Products Aftermarket
2000MitsubishiGalant2.4LL4GASDownstreamDownstream Bank 1 Sensor 2 for Non-Calif-ESV vehicles.; Walker Products Aftermarket
2000MitsubishiGalant3.0LV6GASUpstreamUpstream oxygen sensor for non-California ESV vehicles.; Walker Products Aftermarket
2000MitsubishiGalant3.0LV6GASDownstreamDownstream Oxygen Sensor compatible with Non-California ESV vehicles.; Walker Products Aftermarket
2000MitsubishiGalant2.4LL4GASUpstreamUpstream oxygen sensor for bank 1 sensor 1 incompatible with California-ESV vehicles.; Walker Products Aftermarket
2000MitsubishiGalant2.4LL4GASDownstreamDownstream oxygen sensor for second bank, sensor 1, non-California emissions.; Walker Products Aftermarket
1999MitsubishiDiamante3.5LV6GASUpstream RearNon California engine, no California engine, upstream position, rear location; Walker Products Aftermarket
1999MitsubishiDiamante3.5LV6GASUpstream FrontNon-Calif-ESV No Calif-ESV Upstream Front; Walker Products Aftermarket
1999MitsubishiDiamante3.5LV6GASDownstream RearDownstream Rear Oxygen Sensor for Non-Calif-ESV models.; Walker Products Aftermarket
1999MitsubishiDiamante3.5LV6GASDownstream FrontNon Calif-ESV No Calif-ESV Downstream Front; Walker Products Aftermarket
1999MitsubishiDiamante3.5LV6GASUpstream RearNon Calif-ESV Upstream Rear Oxygen Sensor; Walker Products Aftermarket
1999MitsubishiDiamante3.5LV6GASUpstream FrontFits non-California emissions vehicles upstream of catalytic converter.; Walker Products Aftermarket
1999MitsubishiDiamante3.5LV6GASDownstream RearNon Calif-ESV; Downstream; Rear; Walker Products Aftermarket
1999MitsubishiDiamante3.5LV6GASDownstream FrontNon Calif-ESV; Downstream; Front; Walker Products Aftermarket
1999MitsubishiEclipseSpyder GSTFWD2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
1999MitsubishiEclipseGSTFWD2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
1999MitsubishiEclipse2.4LL4GASDownstreamDownstream oxygen sensor for B1S2, not for vehicles in California.; Walker Products Aftermarket
1999MitsubishiEclipse2.4LL4GASDownstreamDownstream Bank 1 Sensor 2 for Non-Calif-ESV vehicles.; Walker Products Aftermarket
1999MitsubishiEclipse2.4LL4GASDownstreamDownstream oxygen sensor for second bank, sensor 1, non-California emissions.; Walker Products Aftermarket
1999MitsubishiGalant3.0LV6GASUpstreamNon Calif-ESV; No Calif-ESV; Upstream; Walker Products Aftermarket
1999MitsubishiGalant3.0LV6GASDownstreamDownstream placement for vehicles without California emissions certification.; Walker Products Aftermarket
1999MitsubishiGalant2.4LL4GASUpstreamNon California emissions certified; Bank 1 Sensor 1; Upstream position; Not suitable for California emissionscertified vehicles; Walker Products Aftermarket
1999MitsubishiGalant2.4LL4GASDownstreamDownstream oxygen sensor for B1S2, not for vehicles in California.; Walker Products Aftermarket
1999MitsubishiGalant2.4LL4GASUpstreamFor vehicles without California and Federal Emissions - Upstream Bank 1 Sensor 1.; Walker Products Aftermarket
1999MitsubishiGalant2.4LL4GASDownstreamDownstream Bank 1 Sensor 2 for Non-Calif-ESV vehicles.; Walker Products Aftermarket
1999MitsubishiGalant3.0LV6GASUpstreamUpstream oxygen sensor for non-California ESV vehicles.; Walker Products Aftermarket
1999MitsubishiGalant3.0LV6GASDownstreamDownstream Oxygen Sensor compatible with Non-California ESV vehicles.; Walker Products Aftermarket
1999MitsubishiGalant2.4LL4GASUpstreamUpstream oxygen sensor for bank 1 sensor 1 incompatible with California-ESV vehicles.; Walker Products Aftermarket
1999MitsubishiGalant2.4LL4GASDownstreamDownstream oxygen sensor for second bank, sensor 1, non-California emissions.; Walker Products Aftermarket
1998MitsubishiDiamante3.5LV6GASUpstream RearUpstream oxygen sensor for rear exhaust system.; Walker Products Aftermarket
1998MitsubishiDiamante3.5LV6GASUpstream FrontFront upstream oxygen sensor needed for proper functionality near exhaust manifold.; Walker Products Aftermarket
1998MitsubishiDiamante3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
1998MitsubishiDiamante3.5LV6GASDownstream FrontDownstream front oxygen sensor required.; Walker Products Aftermarket
1998MitsubishiEclipse2.4LL4GASDownstreamDownstream oxygen sensor for B1S2, not for vehicles in California.; Walker Products Aftermarket
1998MitsubishiEclipseSpyder GST2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
1998MitsubishiEclipseGST2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
1998MitsubishiEclipse2.4LL4GASDownstreamDownstream Bank 1 Sensor 2 for Non-Calif-ESV vehicles.; Walker Products Aftermarket
1998MitsubishiEclipse2.4LL4GASDownstreamDownstream oxygen sensor for second bank, sensor 1, non-California emissions.; Walker Products Aftermarket
1997MitsubishiDiamante3.5LV6GASUpstream RearUpstream oxygen sensor for rear exhaust system.; Walker Products Aftermarket
1997MitsubishiDiamante3.5LV6GASUpstream FrontFront upstream oxygen sensor needed for proper functionality near exhaust manifold.; Walker Products Aftermarket
1997MitsubishiDiamante3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
1997MitsubishiDiamante3.5LV6GASDownstream FrontDownstream front oxygen sensor required.; Walker Products Aftermarket
1997MitsubishiEclipse2.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
1997MitsubishiEclipseGST2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
1996MitsubishiEclipse2.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
1996MitsubishiEclipseGST2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
1995MitsubishiEclipseGST2.0LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
1995MitsubishiExpoFWD2.4LL4GASDownstreamDownstream oxygen sensor for B1S2, not for vehicles in California.; Walker Products Aftermarket
1995MitsubishiExpoFWD2.4LL4GASDownstreamCalif-ESV; B1S3; Downstream; Walker Products Aftermarket
1995MitsubishiExpoAWD2.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
1995MitsubishiExpoFWD2.4LL4GASDownstreamDownstream Bank 1 Sensor 2 for Non-Calif-ESV vehicles.; Walker Products Aftermarket
1995MitsubishiExpoFWD2.4LL4GASDownstreamCalif-ESV; Downstream; B1S3; Walker Products Aftermarket
1995MitsubishiExpoFWD2.4LL4GASDownstreamDownstream oxygen sensor for second bank, sensor 1, non-California emissions.; Walker Products Aftermarket
1994MitsubishiExpoFWD2.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
1994MitsubishiExpoAWD2.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
1994MitsubishiExpo LRV2.4LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
1994MitsubishiExpo LRV1.8LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
1993MitsubishiExpoFWD2.4LL4GASDownstreamDownstream oxygen sensor for B1S2 position in California emissions.; Walker Products Aftermarket
1993MitsubishiExpoAWD2.4LL4GASDownstreamDownstream oxygen sensor for B1S2 position in California emissions.; Walker Products Aftermarket
1993MitsubishiExpoFWD2.4LL4GASDownstreamDownstream oxygen sensor compatible with California-ESV vehicles in bank 1 position 2.; Walker Products Aftermarket
1993MitsubishiExpoAWD2.4LL4GASDownstreamDownstream oxygen sensor compatible with California-ESV vehicles in bank 1 position 2.; Walker Products Aftermarket
1993MitsubishiExpo LRVFWD2.4LL4GASDownstreamDownstream oxygen sensor for B1S2 position in California emissions.; Walker Products Aftermarket
1993MitsubishiExpo LRVAWD2.4LL4GASDownstreamDownstream oxygen sensor for B1S2 position in California emissions.; Walker Products Aftermarket
1993MitsubishiExpo LRV1.8LL4GASDownstreamDownstream oxygen sensor for B1S2 position in California emissions.; Walker Products Aftermarket
1993MitsubishiExpo LRVFWD2.4LL4GASDownstreamDownstream oxygen sensor compatible with California-ESV vehicles in bank 1 position 2.; Walker Products Aftermarket
1993MitsubishiExpo LRVAWD2.4LL4GASDownstreamDownstream oxygen sensor compatible with California-ESV vehicles in bank 1 position 2.; Walker Products Aftermarket
1993MitsubishiExpo LRV1.8LL4GASDownstreamDownstream oxygen sensor compatible with California-ESV vehicles in bank 1 position 2.; 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.