Walker
OE Replacement

Walker 350-34707 Oxygen Sensor - Upstream

Brand Walker 350-34707
Position Upstream
Heated Yes
Wire Gauge Measurement 20.0
Sensor Type Narrow-band
Terminal Type Blade
Universal Or Specific Fit Specific
Wire Quantity 4
Connector Shape Square
Terminal Quantity 4
Connector Gender Female
Terminal Gender Male
Thread Size M18 - 1.5
Overall Length 555
Mounting Type Threaded
Product line OE Replacement
Fits Suzuki · 1 vehicle

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

Heated narrow-band design. Delivers the diagnostic feedback the engine control system expects.

Threaded mounting. Uses a secure threaded installation with a square female connector.

$49.43Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
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Step 2 — Quantity
Order total $49.43
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

OE Replacement Oxygen Sensor for Suzuki Esteem

Walker OE Replacement oxygen sensor 350-34707 is a direct-fit, heated narrow-band sensor built for the 2001 Suzuki Esteem upstream position. It is engineered to deliver the ECU feedback needed for proper fuel control and emissions monitoring on this application.

  • Specific-fit oxygen sensor for the upstream location
  • Heated narrow-band design for faster operating response
  • 4-wire configuration with blade terminals
  • Square female connector for OE-style connection
  • M18 x 1.5 threaded mounting for direct replacement service
  • 555 mm overall length with 20-gauge wire

Walker OE Replacement Line

Walker Products’ OE Replacement line focuses on application-specific engine management and oxygen/air-fuel sensors. For the Suzuki Esteem, part number 350-34707 is built to match the vehicle’s sensor position, connector style, and diagnostic requirements so the ECU receives the correct signal for closed-loop operation.

This part cross-references no listed interchange numbers for the same application.

What It Helps Address

  • Check engine light related to upstream oxygen sensor performance
  • Poor fuel economy caused by incorrect air-fuel feedback
  • Rough running or hesitation from inaccurate exhaust sensing
  • Elevated exhaust emissions from a failing sensor signal
  • Fault codes stored in the ECU for sensor circuit or response issues

Installation Notes

Confirm the upstream mounting location before installation on the 2001 Suzuki Esteem. Inspect the sensor wiring, connector, and harness for heat damage, corrosion, or abrasion before replacing the part. Use the correct M18 x 1.5 threaded sensor socket and verify the connector locks securely to the OE-style female plug.

Quality Assurance

Walker Products has produced engine management and fuel system components since 1946 and operates as an ISO 9001 / TS 16949 certified company. Part number 350-34707 is manufactured as an OE-style replacement for the specified application and position.

This part fits 1 vehicle
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2001SuzukiEsteem1.6LL4UpstreamOE Replacement