Oxygen Sensor for 2017-2021 BMW M240i & More - Bosch 17404

$133.99

Part number: 17404

UPC: 077212251674

Condition: New

Weight: 0.29 LBS

Item Package Quantity: 1

$133.99

Current Stock: 16

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Bosch Oxygen Sensor P/N:17404

$133.99

Description

Bosch 17404 oxygen sensor for the 2017-2021 BMW M240i 6-cylinder 3.0L and other vehicles measures the air-fuel ratio continuously across the full lambda range. This upstream wideband sensor gives the ECU more detailed information than a switching sensor does, for more accurate air-fuel mixture control.

Wideband A/F design with continuous measurement across the full lambda range
Reaches operating temperature in less than 7 seconds for quick closed-loop control
Optimized heater control and ceramic construction for reliable performance through rapid load changes and harsh thermal cycles
Withstands exhaust streams up to 1,880°F
Metal housing, integrated heater element and TSP coating resist vibration, corrosion and contamination

Quick facts

Part: Bosch 17404 oxygen sensor
Fits: 2017-2021 BMW M240i 6-cylinder 3.0L and other vehicles
Position: Upstream
Material: Metal housing
Condition: New

A check engine light, rough running or poorer fuel economy can mean an oxygen sensor is worn, though other faults produce the same signs. Before you replace the sensor, rule out exhaust leaks and wiring or connector damage, since a new sensor will not correct those.

Fits

The Bosch 17404 is listed for a wide range of BMW models, led by the 2017-2021 BMW M240i xDrive 6-cylinder 3.0L and the 2018-2021 BMW X3 6-cylinder 3.0L. This listing is one upstream sensor, and the 2017-2021 BMW M240i 6-cylinder 3.0L takes one. Open the "Vehicles it fits" section to check your exact model and engine.

Specifications

Fit and size

Position: Upstream
Quantity per vehicle: 1
Thread size: M18 - 1.5
Hex size: 22 mm
Overall length: 15.0 in
Length (sealing surface to end of connector): 13.8 in
Terminal quantity: 5

Build and materials

Sensor type: Wide-band
Housing material: Metal
Coating: TSP coating
Condition: New
Warranty: Bosch 1 year, unlimited mileage, for non-commercial passenger cars and light trucks

In the box

One oxygen sensor with its wiring harness.

Installation notes

Direct-fit connectors.
Conductive anti-seize is pre-applied to the threads.

Manufacturer's description

Product specs

Vehicles it fits

Interchange numbers

Buyer's Q&A

Frequently Asked Questions

Is this the right oxygen sensor for a 2018-2021 BMW X3 6-cylinder 3.0L?

Yes, the Bosch 17404 is listed for the 2018-2021 BMW X3 6-cylinder 3.0L. For another model, open the "Vehicles it fits" section and check its engine.

Does this Bosch O2 sensor come with its wiring harness?

Yes. The Bosch 17404 oxygen sensor comes with its wiring harness and has a connector with five terminals.

Is this Bosch premium oxygen sensor wideband or narrowband?

This oxygen sensor is a wideband type for the upstream position, so it reports the air-fuel ratio continuously across the full lambda range.

What thread size and wrench size does this oxygen sensor use?

The thread is M18 - 1.5 and the hex size is 22 mm. Overall length is 15.0 in, and the length from the sealing surface to the end of the connector is 13.8 in.

Does this oxygen sensor come with anti-seize on the threads?

Yes. The threads of the Bosch 17404 come with conductive anti-seize already applied, and the connectors are direct-fit.