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Deal.ai › DENSO
DENSO
DENSO Oxygen Sensor 234-4374

DENSO Oxygen Sensor 234-4374

Best price now

$35.95at Newparts.comChecked 1 h ago

25% under what the other stores charge

Compared across 17 stores. Prices are checked against each store and labelled with when.

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Price facts

  • Lowest price today: $35.95 at Newparts.com (checked Nov 12, 2026).
  • Checked at 17 stores.

Our take on the DENSO Oxygen Sensor 234-4374

The DENSO 234-4374 is a heated upstream oxygen sensor built as a direct OE-style replacement for a range of Ford, Lincoln, Mazda and Mercury vehicles. It uses a threaded mount, a four-wire harness about 15.4 inches long and a male connector, so it plugs into the factory wiring without splicing. DENSO adds an aluminum oxide trap layer meant to shield the ceramic element from silicone and lead contamination, which the brand ties to longer sensor life. It suits owners of the listed trucks and vans chasing a check-engine light or rough running, and it competes with generic universal sensors on exact fit rather than on price alone.

Best forFord E-Series van and truck owners with a failed upstream sensorDrivers who want a plug-and-play OE-style fitOwners fixing a check-engine code tied to the front sensorMazda and Mercury owners on the listed applications
Pros
  • Specific fit for the listed Ford, Lincoln, Mazda and Mercury vehicles
  • Heated element reaches operating temperature quickly
  • Four-wire harness with male connector matches factory wiring
  • Aluminum oxide trap layer resists silicone and lead contamination
  • OE-style threaded mount for direct replacement
Cons
  • Fits only the listed applications, not a universal part
  • Upstream position only, so it won't replace a downstream sensor
  • Wrong sensor choice can leave the check-engine light on
  • No sensor socket included

DENSO Oxygen Sensor 234-4374 prices at every store

  • Newparts.comNew

    In stock

    $35.95Checked 1 h ago
    Visit Newparts.com
  • IPW AUTO PARTSNew

    In stockReturn policy

    $47.35Checked 1 h ago
    Visit IPW AUTO PARTS
  • WalmartNew

    In stock

    $43.43+ $5.99 shippingChecked 1 h ago
    Visit Walmart
  • FR SPORTNew

    In stockReturn policy

    $51.49Checked 1 h ago
    Visit FR SPORT
  • Summit RacingNew

    In stock

    $45.99+ $13.99 shippingChecked 1 h ago
    Visit Summit Racing
  • AutoZoneNew

    In stock

    $76.99+ $4.99 shippingChecked 1 h ago
    Visit AutoZone
  • NAPA Auto PartsNew

    In stock

    $83.99Free shippingChecked 1 h ago
    Visit NAPA Auto Parts
  • Partsgeek.comNew

    Availability unknown

    $40.38Checked 1 h ago
    Visit Partsgeek.com
  • Partzilla.comNew

    Availability unknown

    $41.04Checked 1 h ago
    Visit Partzilla.com
  • DENSOproductsNew

    Availability unknown

    $42.20Checked 1 h ago
    Visit DENSOproducts
  • Sixity AutoNew

    Availability unknown

    $43.21Checked 1 h ago
    Visit Sixity Auto
  • eBayNew

    Availability unknownSold by performance-curve

    $47.95Checked 1 h ago
    Visit eBay
  • JEGS High PerformanceNew

    Availability unknown

    $48.98Checked 1 h ago
    Visit JEGS High Performance
  • PartCatalog.comNew

    Availability unknown

    $49.28Checked 1 h ago
    Visit PartCatalog.com
  • CARiD.comNew

    Availability unknown

    $50.02Checked 1 h ago
    Visit CARiD.com
  • O'Reilly Auto PartsNew

    Availability unknown

    $76.99Checked 1 h ago
    Visit O'Reilly Auto Parts
  • Advance Auto PartsNew

    Availability unknown

    $76.99Checked 1 h ago
    Visit Advance Auto Parts

Also available at

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DENSO Oxygen Sensor 234-4374 price history

Lowest price we've seen: $35.95 on Nov 12 at Newparts.com. Tracked across 15 stores since Nov 12.

What reviewers say

Owners of these sensors generally report the part fits and plugs in as expected and clears oxygen-sensor codes. Some note that a failed sensor can return if the underlying fault, such as an exhaust leak or contaminated fuel, is not fixed.

What people mention
  • FitPraisedOwners say it bolts in and connects to the factory harness without adapters.
  • Code fixMixedMany report the check-engine light stays off, but some see codes return when another fault remains.
  • DurabilityPraisedLong-term owners report the sensor keeps working over many miles.

About the DENSO Oxygen Sensor 234-4374

This DENSO oxygen sensor is an OE-style replacement for the upstream position. It is a heated, threaded sensor with a 4-wire male connector, and it is specific to the vehicles it is listed for.

DENSO builds and tests its oxygen sensors to OE standards. Each one is made as an exact replacement for a first-time fit. The sensor has an aluminum oxide trap layer that protects the ceramic element from silicone and lead poisoning.

Part number
234-4374
Interchange number
213-1459
Brand
DENSO
Style
OE Style
Position
Upstream
Sensor type
Heated
Mounting
Threaded
Thread diameter
0.708
Connector
Male
Wires
4
Harness length
15.39
Fit type
Vehicle specific
Fits makes
Ford, Lincoln, Mazda, Mercury
Ford models
E-150 (2005-2008), E-250 (2005-2008), E-350 Club Wagon (2005), E-350 Super Duty (2005-2008), Escape (2005-2010), F-250 Super Duty (2005-2009), F-350 Super Duty (2005-2009), Fusion (2006-2010)
Lincoln models
Zephyr (2006)
Mazda models
Tribute (2005-2010)
Mercury models
Mariner (2005-2009), Milan (2006-2010)

Specifications

Vehicle Position
Upstream
Connector Gender
Male
Mounting Type
Threaded
Sensor Type
Heated
Thread Diameter
0.708
Universal Or Specific Fit
Specific
Wire Quantity
4

Questions and answers

Is this a direct replacement or a universal sensor?
It is a specific-fit sensor for the listed Ford, Lincoln, Mazda and Mercury applications, with a factory-style connector and threaded mount.
Is it the upstream or downstream sensor?
It is an upstream sensor, mounted ahead of the catalytic converter. It will not substitute for a downstream sensor.
How long is the wiring harness?
The harness is about 15.39 inches with four wires and a male connector.
Does it need splicing?
No. The factory-style connector plugs into the vehicle's wiring, so no splicing is required.
Will it fix my check-engine light?
It should clear an oxygen-sensor code caused by a failed sensor. If the code comes from an exhaust leak or another fault, replacing the sensor alone may not fix it.
What is the aluminum oxide trap layer?
It is a DENSO layer designed to protect the ceramic element from silicone and lead contamination, which the brand says extends sensor life.
Where is the DENSO Oxygen Sensor 234-4374 cheapest?
At Newparts.com, for $35.95, 25% under what the other stores charge, as of our latest check.
Where can I buy the DENSO Oxygen Sensor 234-4374?
17 stores we checked sell it, including PartCatalog.com, FR SPORT, IPW AUTO PARTS, Newparts.com, Partsgeek.com.

Stores we've priced the DENSO Oxygen Sensor 234-4374 at

  • Walmart deals and prices

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Interchange Numbers
213-1459
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