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Deal.ai › DENSO

DENSO

DENSO Oxygen Sensor 234-4001

DENSO Oxygen Sensor 234-4001

Best price now

$20.00at eBayChecked 1 h ago

50% under what the other stores charge

Compared across 16 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission.

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Price facts

Best price today: $20.00 at eBay (checked Nov 12, 2026).
Checked at 16 stores.

Our take on the DENSO Oxygen Sensor 234-4001

The DENSO 234-4001 is a direct-fit oxygen sensor for the upstream (pre-catalyst) position on many Toyota and Lexus four-cylinder engines. DENSO is an original-equipment supplier, so this sensor uses the same zirconia element and connector design as the factory part rather than a universal splice-in unit. It suits owners chasing a check-engine light, rough idle or failed emissions test who want a plug-and-play replacement. Against universal sensors it costs more effort to install but less guesswork; against budget aftermarket brands it is the safer match for the factory ECU.

Best forOwners of compatible Toyota and Lexus models with a failed upstream sensorDrivers fixing a P0130–P0135 check-engine codePeople who prefer an OE-style plug-and-play fit over a universal splice-in sensoDo-it-yourselfers replacing a sensor at home

Pros

Direct-fit connector, no splicing or wire modification
Original-equipment supplier quality and calibration
Zirconia sensing element built to factory spec
Correct thread and hex for the listed applications
Common fix for emissions and fuel-trim codes

Cons

Fits only the specific applications it is listed for, so part numbers must be checked
Upstream-only role; not a substitute for a downstream sensor
Costs more than generic universal sensors
No sensor socket included, so a special tool may be needed

DENSO Oxygen Sensor 234-4001 prices at every store

eBayNew
In stockSold by mandrelbends
$20.00Checked 1 h ago
Visit eBay
WalmartNew
In stockSold by PartsHawk
$27.75Free shippingChecked 1 h ago
Visit Walmart
IPW AUTO PARTSNew
In stockReturn policy
$41.38Checked 1 h ago
Visit IPW AUTO PARTS
FR SPORTNew
In stockReturn policy
$44.58Checked 1 h ago
Visit FR SPORT
NAPA Auto PartsNew
In stock
$68.24Free shippingChecked 1 h ago
Visit NAPA Auto Parts
AmazonNew
Availability unknown
As an Amazon Associate, Deal.ai earns from qualifying purchases.
$16.78+ $8.50 shippingChecked 1 h ago
Visit Amazon
Partsgeek.comNew
Availability unknown
$35.99Checked 1 h ago
Visit Partsgeek.com
SparkPlugs.com FamilyNew
Availability unknown
$36.18Checked 1 h ago
Visit SparkPlugs.com Family
DENSOproductsNew
Availability unknown
$36.18Checked 1 h ago
Visit DENSOproducts
Sixity AutoNew
Availability unknown
$37.17Checked 1 h ago
Visit Sixity Auto
Summit RacingNew
Availability unknown
$39.99Checked 1 h ago
Visit Summit Racing
JEGS High PerformanceNew
Availability unknown
$39.99Checked 1 h ago
Visit JEGS High Performance
PartCatalog.comNew
Availability unknown
$43.50Checked 1 h ago
Visit PartCatalog.com
CARiD.comNew
Availability unknown
$45.36Checked 1 h ago
Visit CARiD.com
AutoZoneNew
Availability unknown
$52.99Checked 1 h ago
Visit AutoZone
Advance Auto PartsNew
Availability unknown
$52.99Checked 1 h ago
Visit Advance Auto Parts

Store links may earn us a commission.

DENSO Oxygen Sensor 234-4001 price history

Lowest price we've seen: $16.78 on Nov 12 at Amazon. Tracked across 14 stores since Nov 12.

What reviewers say

Owners of compatible Toyotas and Lexus models generally report the sensor plugs in and clears oxygen-sensor codes, with fit and connector matching the factory part. Complaints center on ordering the wrong application and on the need for a sensor socket.

What people mention

FitPraisedOwners say the connector and threads match the factory sensor on listed applications.
Code fixPraisedMany report the check-engine light clearing after replacement.
ApplicationCriticisedBuyers warn that the same model year can use different sensors, so the part number must be verified.
InstallationMixedInstallation is straightforward on accessible engines but needs a sensor socket and some reach.

About the DENSO Oxygen Sensor 234-4001

This is the DENSO 234-4001 oxygen sensor.

Brand: DENSO
Part number: 234-4001

Specifications

color: Multicolor

Questions and answers

Will this fit my car?: Only if your vehicle and engine are on DENSO's application list for 234-4001. Check the part number against your old sensor or your VIN before ordering, since the same model year can use different sensors.
Is this an upstream or downstream sensor?: It is an upstream (pre-catalyst) sensor for the applications it covers. Do not use it as a downstream replacement.
Do I need a special tool to install it?: A dedicated oxygen-sensor socket makes the job much easier, and some engines need it for clearance. The sensor itself comes with the factory-style connector.
Will it fix my check-engine light?: If the code points to a failed upstream oxygen sensor on a compatible vehicle, replacement usually clears it. Have the code read first, since other faults can trigger the same light.
How is it different from a universal sensor?: It comes with the correct connector and wire length for the listed applications, so there is no splicing. Universal sensors are cheaper but require reusing or adapting the old connector.
Is DENSO the same as the factory sensor?: DENSO supplies oxygen sensors to several automakers, so this part is built to original-equipment specification for the applications it lists.
Where is the DENSO Oxygen Sensor 234-4001 cheapest?: At eBay, for $20.00, 50% under what the other stores charge, as of our latest check.
What do buyers say about the DENSO Oxygen Sensor 234-4001?: Rated 5 out of 5 from 1 ratings.
Where can I buy the DENSO Oxygen Sensor 234-4001?: 16 stores we checked sell it, including FR SPORT, IPW AUTO PARTS, Amazon, eBay, Walmart.

Stores we've priced the DENSO Oxygen Sensor 234-4001 at

Walmart deals and prices

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