Walker
Walker Products Aftermarket

Walker 350-34281 Oxygen Sensor - Downstream Right

Brand Walker 350-34281
Position Downstream Right
Connector Gender Male
Connector Shape Radiused Polygon
Mounting Type Threaded
Overall Length 24.72
Sensor Type Heated
Thread Diameter 18.0
Universal Or Specific Fit Specific
Wire Gauge Measurement 20
Wire Quantity 4
Wiring Harness Length 21.18
Product line Walker Products Aftermarket
Fits INFINITI · 3 vehicles

OE replacement. Engineered as an original-equipment-style sensor for the specific application.

Heated sensor. Helps deliver the diagnostic feedback the ECU expects.

Threaded mount. Installs with a secure, direct-fit connection.

$75.30Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
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Step 2 — Quantity
Order total $75.30
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Free returns within 60 days if it doesn't fit when fitment is verified.

Walker 350-34281 Oxygen Sensor for Infiniti J30

Walker Products 350-34281 is a heated oxygen sensor built as a specific-fit OE replacement for select Infiniti J30 applications. It is engineered for the downstream right position and supports ECU feedback on 1995-1997 Infiniti J30 models.

Key Features

  • Specific-fit oxygen sensor for the downstream right location
  • Heated sensor design for faster operating response
  • 4-wire configuration with 20-gauge wiring
  • 18.0 mm thread diameter and threaded mounting type
  • Radiused polygon male connector for application-specific connection
  • Wiring harness length: 21.18 in.; overall length: 24.72 in.

Product Details

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors developed as OE-style replacements for worldwide vehicle applications. Part number 350-34281 is built for the correct fitment position and diagnostic feedback expected by the ECU. On the Infiniti J30, the downstream right oxygen sensor helps monitor exhaust stream conditions after the catalytic converter, supporting proper fuel control and emissions system operation. This part number 350-34281 is listed for 1995 Infiniti J30 and 1996-1997 Infiniti J30, downstream right.

Common Issues This Sensor May Address

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

Installation Notes

Verify the downstream right location before installation on the Infiniti J30. Inspect the sensor wiring harness and connector for physical damage, since damaged wiring can shorten service life and affect signal quality. Confirm thread size, connector shape, and harness length match the vehicle before replacement. This Walker oxygen sensor 350-34281 is a direct-fit style part for the listed application.

Quality Assurance

Walker Products manufactures engine management sensors as OE replacement parts and operates under Automotive ISO9001/TS 16949 certification standards. The Walker Products Aftermarket line is built around application-specific fitment and ECU-relevant feedback for the listed vehicle coverage.

This part fits 3 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersFuel TypePositionNotes
1997INFINITIJ303.0LV6GASDownstream RightInstall downstream oxygen sensor on the right side.; Walker Products Aftermarket
1996INFINITIJ303.0LV6GASDownstream RightInstall downstream oxygen sensor on the right side.; Walker Products Aftermarket
1995INFINITIJ303.0LV6—Downstream RightOE Replacement