Oxygen Sensor Replacement: Match the Model

Find a replacement by the full sensor number and your detector model. Similar appearance does not confirm compatibility.

Find your oxygen sensor

Browse all oxygen sensors & parts

Selected model examples

Examples only. Browse the full range. These sensors are not interchangeable.

Need a different model? Browse the full range or send a label photo for a model check. Current prices and availability are shown on each product page.

Model references and fit checks

17134461: Ventis MX4 oxygen sensor

Industrial Scientific lists part 17134461 as an oxygen replacement sensor for the Ventis MX4. Match the complete detector name and its service documentation; do not assume every detector called MX4 uses the same part.

Manufacturer parts reference

4OXV / AAY80-390: check the label and connection

The City Technology datasheet identifies 4OXV as part AAY80-390, an electrochemical oxygen sensor with a 1-25% volume measuring range. Our product listing also includes the search spelling 40XV. Confirm the label, dimensions, pin layout and detector requirements before choosing it; the search spelling alone is not proof of a match.

Manufacturer datasheet

O2-A2: two-pin oxygen sensor

Alphasense identifies O2-A2 as a two-pin, galvanic oxygen sensor for industrial portable gas-detector applications, with a 0-30% oxygen range. Check the instrument's specified sensor and electrical requirements. O2-A2, 4OXV and 17134461 are not presented here as interchangeable replacements.

Manufacturer product reference

10106729: XCell O2 sensor

MSA's ALTAIR 4X manual lists 10106729 as the oxygen sensor replacement kit. It is a different part from 10106725, the CO/H2S sensor kit. Match the exact instrument and its service requirements before ordering.

MSA ALTAIR 4X part-number reference

Fixed detectors and oxygen analyzers

Sensepoint XCD: SPXCDXSO1SS

View SPXCDXSO1SS oxygen cartridge for compatible Sensepoint XCD fixed detectors, 0-25% by volume. This is a replacement cartridge, not a complete detector. Match the full cartridge code and gas configuration.

Sensepoint XCD sensor reference or check my XCD model.

Panametrics oxy.IQ: OX-3

View OX-3 oxygen sensing cell for percent-level measurement in standard background gases with compatible oxy.IQ transmitters. OX-3 is not the ppm model OX-1/OX-5 or the acid-background percent model OX-4. Check the gas composition and instrument configuration.

Panametrics cell-selection reference or check my oxy.IQ model.

These two equipment-family references were checked on 25 October 2026; they do not establish interchangeability or certify the supplied item.

Not sure which one fits?

Send a model-check request with a clear photo of the old sensor label and your detector model. Include a connector photo if available.

These are replacement sensors, not complete gas detectors. A qualified technician should follow the equipment manufacturer's replacement, calibration and bump-test procedures before returning a detector to service.

Manufacturer references checked 24 October 2026. This guide helps identify models; it does not replace the equipment manual or certify compatibility.

GasAlertMicroClip: X3, XT and XL

The manufacturer Honeywell lists SR-X3P for X3 and SR-X2V for XT and XL. These are different sensors; confirm your detector model before ordering.

Honeywell replacement-parts reference · Ask about this model.