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Deal.ai › DENSO
DENSO
DENSO 234-4504 Oxygen Sensor

DENSO 234-4504 Oxygen Sensor

Best price now

$85.95at Newparts.comChecked 1 h ago

19% under what the other stores charge

Compared across 14 stores. Prices are checked against each store and labelled with when.

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Price facts

  • Lowest price today: $85.95 at Newparts.com (checked Nov 12, 2026).
  • Checked at 14 stores.
  • Our take on the DENSO 234-4504 Oxygen Sensor

    The DENSO 234-4504 is a downstream (post-catalyst) oxygen sensor built to OE specifications for a range of Toyota vehicles. DENSO supplies sensors to Toyota as original equipment, so this is the same style of part that came on the car rather than a universal splice-in unit. It suits owners chasing a check-engine light for catalyst efficiency or a lazy sensor, and it competes with cheaper universal sensors on fit and plug-and-play wiring.

    Best forToyota owners replacing a failed downstream sensorDrivers fixing a P0420 or catalyst efficiency codeBuyers who want an OE-style connector, not a splice-in universal
    Pros
    • OE-level fit and connector for listed Toyota applications
    • Downstream position, so it reads catalyst efficiency
    • No splicing or wire modification on supported models
    • DENSO is a common Toyota original-equipment supplier
    Cons
    • Fits only specific Toyota applications, not universal
    • Downstream-only; not a substitute for an upstream sensor
    • A sensor will not fix a genuinely failed catalytic converter

    DENSO 234-4504 Oxygen Sensor prices at every store

    • Newparts.comNew

      In stock

      $85.95Checked 1 h ago
      Visit Newparts.com
    • WalmartNew

      In stock

      $106.33Free shippingChecked 1 h ago
      Visit Walmart
    • Summit RacingNew

      In stock

      $98.99+ $13.99 shippingChecked 1 h ago
      Visit Summit Racing
    • Partsgeek.comNew

      Availability unknown

      $96.23Checked 1 h ago
      Visit Partsgeek.com
    • AmazonNew

      Availability unknown

      As an Amazon Associate, Deal.ai earns from qualifying purchases.

      $100.12Free shippingChecked 1 h ago
      Visit Amazon
    • Partzilla.comNew

      Availability unknown

      $101.37Checked 1 h ago
      Visit Partzilla.com
    • SparkPlugs.com FamilyNew

      Availability unknown

      $104.26Checked 1 h ago
      Visit SparkPlugs.com Family
    • DENSOproductsNew

      Availability unknown

      $104.26Checked 1 h ago
      Visit DENSOproducts
    • eBayNew

      Availability unknownSold by rockbottomauto

      $107.94Checked 1 h ago
      Visit eBay
    • CarParts.comNew

      Availability unknown

      $114.99Checked 1 h ago
      Visit CarParts.com
    • CARiD.comNew

      Availability unknown

      $115.10Checked 1 h ago
      Visit CARiD.com
    • AutoZoneNew

      Availability unknown

      $144.99Checked 1 h ago
      Visit AutoZone
    • O'Reilly Auto PartsNew

      Availability unknown

      $144.99Checked 1 h ago
      Visit O'Reilly Auto Parts
    • Advance Auto PartsNew

      Availability unknown

      $144.99Checked 1 h ago
      Visit Advance Auto Parts

    Also available at

    • Auto Parts and StuffCheck price at Auto Parts and Stuff

    Store links may earn us a commission.

    DENSO 234-4504 Oxygen Sensor price history

    Lowest price we've seen: $85.95 on Nov 12 at Newparts.com. Tracked across 14 stores since Nov 12.

    About the DENSO 234-4504 Oxygen Sensor

    The DENSO 234-4504 is a downstream oxygen sensor. It measures the gases in a vehicle's exhaust, which helps the engine maintain emissions standards and fuel efficiency.

    It is built to OE-level quality, reliability and fitment. It is compatible with various Toyota models.

    Brand
    DENSO
    Part number
    234-4504
    Type
    Oxygen sensor (downstream)
    Compatibility
    Various Toyota models

    Questions and answers

    Is this an upstream or downstream sensor?
    It is a downstream sensor, mounted after the catalytic converter. Use it for the post-catalyst position only.
    Will it fix a P0420 code?
    It can, if a slow or failed downstream sensor is the cause. If the catalytic converter itself is failing, a new sensor will not clear the code.
    Does it need splicing?
    No. On supported Toyota applications it uses the factory-style connector, so it plugs in directly.
    How do I know it fits my car?
    Check your model, engine and sensor position against the DENSO 234-4504 application list before ordering. Fitment is vehicle-specific.
    Should I replace both sensors at once?
    Only if both are faulty. Upstream and downstream sensors serve different jobs and have different part numbers.
    Where is the DENSO 234-4504 Oxygen Sensor cheapest?
    At Newparts.com, for $85.95, 19% under what the other stores charge, as of our latest check.
    Where can I buy the DENSO 234-4504 Oxygen Sensor?
    15 stores we checked sell it, including Newparts.com, Amazon, Partsgeek.com, Summit Racing, Partzilla.com.

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    Stores we've priced the DENSO 234-4504 Oxygen Sensor at

    • Walmart deals and prices

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