Oxygen Sensor for 2014-2019 Toyota Corolla - DENSO 234-4921

$103.99

Part number: 234-4921

UPC: 042511209039

Condition: New

Weight: 0.39 LBS

Item Package Quantity: 1

$103.99

Current Stock: 16

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DENSO Auto Parts Oxygen Sensor P/N:234-4921

$103.99

Description

DENSO Auto Parts 234-4921 oxygen sensor for the 2014-2019 Toyota Corolla 4-cylinder 1.8L reads the oxygen in the exhaust after the catalytic converter. The engine computer uses that reading to judge how the converter is working.

Laser-welded stainless housing that resists corrosion
PTFE filter that blocks contaminants under harsh engine conditions
Dual-layer protection around the ceramic element for fast, reliable response times
Aluminum oxide trap layer designed to protect the ceramic element from silicone and lead poisoning
Heated, narrow-band design with four wires and a threaded mount

Quick facts

Part: DENSO Auto Parts 234-4921 oxygen sensor
Fits: 2014-2019 Toyota Corolla 4-cylinder 1.8L
Position: Downstream
Condition: New

A check engine light, a rough idle or worse fuel economy can mean an oxygen sensor is wearing out. An exhaust leak can also skew the readings, so those signs alone do not prove the sensor is the problem. If a worn sensor is the cause, this one replaces it.

Fits

This is a direct-fit replacement oxygen sensor for the 2014-2019 Toyota Corolla 4-cylinder 1.8L (engine code L4-1.8L). This listing is one sensor, and the car takes one in the downstream position.

Specifications

Fit and size

Position: Downstream
Quantity per vehicle: 1
Thread diameter: 0.708 in
Wiring harness length: 31.57 in
Wires: 4
Connector gender: Male

Build and materials

Sensor type: Heated, narrow-band
Mounting type: Threaded
Housing: Laser-welded stainless
Condition: New
Country of origin: Japan

Product information is for general reference and may contain errors. See our Disclaimer.

Manufacturer's description

Product specs

Vehicles it fits

Interchange numbers

This part cross-references / interchanges with the following part numbers:

24808, 8946502390, 250-24839, 350-34092

Buyer's Q&A

Frequently Asked Questions

Does the DENSO Auto Parts 234-4921 oxygen sensor fit the 2014-2019 Toyota Corolla 4-cylinder 1.8L?

Yes. DENSO Auto Parts 234-4921 is a direct-fit downstream oxygen sensor for the 2014-2019 Toyota Corolla 4-cylinder 1.8L, engine code L4-1.8L.

Is the 234-4921 an upstream or downstream oxygen sensor?

This oxygen sensor is a downstream sensor. It is a heated, narrow-band unit with a threaded mount.

How long is the wiring harness on this DENSO oxygen sensor, and how many wires does it have?

The harness is 31.57 inches long and has four wires with a male connector. The thread diameter is 0.708 inch.

What can a worn downstream oxygen sensor look like?

A check engine light, a rough idle or lower fuel economy can go with a worn sensor, though they have other causes too. A shop can test the sensor with a scan tool.

What does the aluminum oxide trap layer do on this oxygen sensor?

On the DENSO Auto Parts 234-4921, the aluminum oxide trap layer is designed to protect the ceramic element from silicone and lead poisoning. A PTFE filter also blocks contaminants.