Walker 350-34702 Oxygen Sensor - Upstream or Upstream Right
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Walker
 OE Replacement

Walker 350-34702 Oxygen Sensor - Upstream or Upstream Right

Brand Walker 350-34702
Position Upstream and Upstream Right
Product line OE Replacement
Fits Mitsubishi · 12 vehicles

OE replacement. Engineered as an original-equipment-style oxygen sensor.

Provides the diagnostic feedback the ECU requires.

Walker Products since 1946. A long-standing name in engine management sensors.

$68.69Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.

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Step 2 — Quantity
Order total $68.69
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
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Walker Oxygen Sensor for Mitsubishi Fitment

Walker Products Part Number 350-34702 is an OE-style oxygen sensor built for specific Mitsubishi applications. It is engineered to deliver the diagnostic feedback the ECU expects, helping maintain proper fuel control and emissions performance on the listed vehicles.

Key Features

  • Oxygen sensor for emission control and engine management
  • OE replacement design for exact application fitment
  • Built for the specified sensor position on the vehicle
  • Supports ECU feedback on Mitsubishi Grandis and Mitsubishi Galant applications
  • Walker Products Aftermarket line for engine management sensors
  • Part number 350-34702

Fitment Details

  • Fits 2007-2009 Mitsubishi Grandis, Upstream Right.
  • Fits 2004-2006 Mitsubishi Galant, Upstream, Cyl 1,4; B1S1; Walker Products Aftermarket.
  • Fits 2004-2006 Mitsubishi Galant, Upstream, Cyl 1,4; Cil 1,4; Upstream; B1S1; Walker Products Aftermarket.
  • Fits 2004-2006 Mitsubishi Galant, Upstream, Cyl 1,4; Cil 1,4; Upstream; B1S1; Walker Products Aftermarket.

What It Helps Address

  • Check engine light related to oxygen sensor performance
  • Poor engine operation caused by incorrect air-fuel feedback
  • Increased fuel consumption from inaccurate sensor readings
  • Higher exhaust emissions from a failing upstream sensor
  • Stored ECU fault codes tied to the affected sensor circuit

Installation Notes

Confirm the sensor position before ordering, since this part is application-specific for upstream and upstream right locations. Inspect the sensor, wiring harness, and connector for damage before installation, and verify the vehicle’s fault codes to confirm the affected circuit. Part number 350-34702 should be matched to the exact Mitsubishi Grandis or Mitsubishi Galant application listed above.

Quality Assurance

Walker Products has supplied engine management and oxygen/air-fuel sensors since 1946 and manufactures parts to OE-style application standards. The company is ISO 9001/TS 16949 certified, with production focused on fitment-specific replacement sensors for modern ECU-controlled vehicles.

Related reading

This part fits 12 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersFuel TypePositionNotes
2009MitsubishiGrandis2.4LL4—Upstream RightOE Replacement
2008MitsubishiGrandis2.4LL4—Upstream RightOE Replacement
2007MitsubishiGrandis2.4LL4—Upstream RightOE Replacement
2006MitsubishiGalant2.4LL4GASUpstreamCyl 1,4; B1S1; Cil 1,4; Upstream; Walker Products Aftermarket
2006MitsubishiGalant2.4LL4GASUpstreamCyl 1,4; Cil 1,4; Upstream; B1S1; Walker Products Aftermarket
2006MitsubishiGalant2.4LL4GASUpstreamCyl 1,4; B1S1; Upstream; Walker Products Aftermarket
2005MitsubishiGalant2.4LL4GASUpstreamCyl 1,4; B1S1; Cil 1,4; Upstream; Walker Products Aftermarket
2005MitsubishiGalant2.4LL4GASUpstreamCyl 1,4; Cil 1,4; Upstream; B1S1; Walker Products Aftermarket
2005MitsubishiGalant2.4LL4GASUpstreamCyl 1,4; B1S1; Upstream; Walker Products Aftermarket
2004MitsubishiGalant2.4LL4GASUpstreamCyl 1,4; B1S1; Cil 1,4; Upstream; Walker Products Aftermarket
2004MitsubishiGalant2.4LL4GASUpstreamCyl 1,4; Cil 1,4; Upstream; B1S1; Walker Products Aftermarket
2004MitsubishiGalant2.4LL4GASUpstreamCyl 1,4; B1S1; Upstream; Walker Products Aftermarket