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Walker Products
Walker Products 350-34134 Oxygen Sensor

Walker Products 350-34134 Oxygen Sensor

Best price now

$31.70at WalmartObserved at 3:51 PM

21% under what the other stores charge

Compared across 5 stores. Prices are checked against each store and labelled with when.

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Our take on the Walker Products 350-34134 Oxygen Sensor

The Walker Products 350-34134 is a heated oxygen sensor with an 18 mm threaded mount, a direct-fit replacement for the factory sensor on the vehicles it is listed for. It is a maintenance part, not an upgrade: it restores the air-fuel signal the engine computer needs to trim fuel and set codes. At $31.70 at Walmart as of November 3, 2026, it sits at the low end of its recent range, well under typical dealer prices for the same sensor.

Best forOwners chasing a P0130–P0167 oxygen sensor codeDIYers replacing a slow or dead upstream sensorHigh-mileage cars with lazy fuel trims or failing emissions testsBudget repairs where a dealer part is overkill
Pros
  • Direct-fit heated sensor with an 18 mm thread, no adapter needed
  • Low price: $31.70 at Walmart as of November 3, 2026
  • Heated element reaches operating temperature quickly, so closed-loop fueling starts sooner
  • Walker is an established aftermarket supplier of emissions and fuel-system parts
Cons
  • Fitment varies by engine and position; confirm the part number for your VIN before buying
  • Aftermarket sensor life can fall short of the original part on some cars
  • A new sensor won't fix a code caused by a wiring fault, exhaust leak or bad catalytic converter
  • No sensor socket included, and a seized old sensor can turn this into a bigger job

Walker Products 350-34134 Oxygen Sensor prices at every store

  • WalmartNew

    In stock

    $31.70Observed at 3:51 PM
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  • Partzilla.comNew

    In stock

    $39.06Observed at 3:51 PM
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  • Newparts.comNew

    In stock

    $39.95Observed at 3:51 PM
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  • Partsgeek.comNew

    In stock

    $42.01Observed at 3:51 PM
    Visit store
  • eBayNew

    In stockSold by autopartselite

    $57.06Observed at 3:51 PM
    Visit store

Also available at

  • eBayCheck price at eBay
  • Auto BarnCheck price at Auto Barn
  • CARiD.comCheck price at CARiD.com
  • CarParts.comCheck price at CarParts.com
  • FinditParts.comCheck price at FinditParts.com
  • FR SportCheck price at FR Sport
  • PartsHawkCheck price at PartsHawk
  • Zoro.comCheck price at Zoro.com

Walker Products 350-34134 Oxygen Sensor price history

Lowest price we've seen: $31.70 on Nov 3 at Walmart. Tracked across 13 stores since Nov 3.

What reviewers say

Owner feedback on Walker oxygen sensors is mixed but leans positive: buyers report codes clearing and fuel trims settling after install, while a minority see the code return within months. Complaints center on short lifespan and connectors that don't match the original harness on some applications.

Pros
  • Clears oxygen sensor codes and turns off the check engine light
  • Plug-and-play connector on correctly listed applications
  • Noticeably cheaper than dealer or OEM sensors
Cons
  • Some units fail or throw codes again within a year
  • Connector or wire length mismatches on certain vehicles
  • Fitment listings can be vague about upstream versus downstream position

Specifications

Functionality Type
Sensor
Sensor Type
Oxygen sensor
Part Type
Sensor
Mounting Type
Threaded
Measuring Media
oxygen
Measurement Sensor Type
Heated
Thread Size
18.0 mm

Questions and answers

Is this sensor worth it over an OEM part?
For an older, high-mileage car, yes: at $31.70 at Walmart as of November 3, 2026, it costs a fraction of a dealer sensor and works fine when the part number matches. On a newer car you plan to keep long-term, an OEM sensor is the safer bet for lifespan.
Will it fit my car?
Only if the 350-34134 is listed for your exact engine and sensor position. Oxygen sensors differ by thread, wire length and connector even within one model year, so check your VIN or the old part number before ordering.
Upstream or downstream?
That depends on the application; the same part number is not used for both positions on most cars. Check which sensor your code points to (bank 1 sensor 1 is usually upstream) before buying.
Will it turn off my check engine light?
It will if the light was set by a failed or slow sensor. If the code comes from a wiring fault, exhaust leak or bad catalytic converter, a new sensor won't fix it.
What's in the box?
The sensor with its attached pigtail and factory-style connector. No socket or thread anti-seize beyond what is pre-applied, so have an oxygen sensor socket and penetrating oil ready.
When is it cheapest?
Oxygen sensors rarely go on deep promotion; the current $31.70 at Walmart as of November 3, 2026 is already near the bottom of its recent range. Waiting rarely saves much on a part this cheap.
Where is the Walker Products 350-34134 Oxygen Sensor cheapest?
At Walmart, for $31.70, 21% under what the other stores charge, as of our latest check.
Where can I buy the Walker Products 350-34134 Oxygen Sensor?
12 stores we checked sell it, including Walmart, Partzilla.com, Newparts.com, Partsgeek.com, eBay.