The 4H0906262M oxygen sensor is listed as an aftermarket rear or downstream lambda sensor for selected Audi and Volkswagen Group applications. A vehicle badge or engine size alone is not enough to confirm it. Before ordering, match the original OE number and compare the red 4-pin connector, wire count, cable length, exhaust position, mounting details, and product photos.
This guide summarizes the verified NexuParts product data and provides a practical pre-purchase checklist. Compatibility can vary by year, engine, market, exhaust layout, and sensor position, so the OE number should remain the primary fitment check. Diagnosis and vehicle-specific service information must determine whether a sensor actually needs replacement.
What the 4H0906262M Oxygen Sensor Listing Confirms
The product is identified as a rear oxygen sensor or lambda sensor. Its primary reference is 4H0906262M, and the listing also provides 4H0-906-262-M and 4H0906265C as interchange or reference numbers. The connector is described as a red 4-pin style matching the product photos. The package contains one sensor.
You can review the current configuration, images, price, and inventory on the 4H0906262M rear oxygen sensor product page. This is an aftermarket replacement part. It is not represented as an OEM or genuine Audi or Volkswagen branded product.
Reference Applications and Their Limits
The product record says it is compatible with selected Audi and VW Group applications. Common references include selected Audi A8, S6, S7, S8, RS7, and related 4.0L models. These names are useful for narrowing a catalog search, but they do not prove fitment for every year, trim, market, engine configuration, or exhaust layout carrying those badges.
Confirm that the vehicle-specific catalog calls for 4H0906262M at the rear or downstream location. Some exhaust systems use more than one oxygen sensor, and sensors at different positions may have different connectors, cable lengths, reference numbers, or calibrations. Do not move a reference from one position to another based only on appearance.
4H0906262M Oxygen Sensor Buying Checklist
1. Match the complete OE number
Start with the original sensor marking, reliable repair record, or VIN-specific catalog. Compare 4H0906262M character by character. If the original record shows 4H0-906-262-M or 4H0906265C, verify the interchange for the exact application rather than assuming every reference works in every position.
2. Confirm rear or downstream position
The listing identifies this product as rear/downstream where applicable. Confirm the intended bank and position through vehicle-specific service or parts information. A sensor mounted upstream and one mounted downstream can look related but should not be treated as interchangeable without verified catalog evidence.
3. Compare the red 4-pin connector
Check the connector color, housing shape, keying, latch, and visible terminal arrangement. The listing specifies a red 4-pin style connector as shown in the photos. Compare multiple angles of the original connector and make sure the vehicle harness can lock correctly without modification.
4. Count and compare the wires
Verify the wire count and how the wires enter the connector. Check the protective sleeve and routing shown in the product images. A matching plug with a different wire layout is a reason to pause and recheck the part number and sensor position.
5. Check cable length and routing
Compare the cable length with the original sensor and consider how it reaches the vehicle connector in the intended exhaust position. A cable that is too short, excessively long, or routed differently may indicate a position or application mismatch. Do not stretch, splice, or reroute wiring to compensate for an uncertain fit.
6. Compare the sensor body and mounting interface
Review the threaded section, hex, tip, body proportions, protective features, and visible markings. Use the product photos as the supplied visual reference. When a physical detail differs from the original, request fitment help before ordering or installation.
7. Confirm package contents
The package includes one rear oxygen sensor. The listed packaged dimensions are 15 cm by 10 cm by 4 cm, with a listed weight of 150 g. Those are package details, not sensor fitment dimensions, so do not use them as a substitute for comparing the actual component and cable.
Diagnosis Comes Before Sensor Replacement
The product record notes that an oxygen sensor may be relevant when diagnosing fuel-trim faults, emissions codes, poor fuel economy, or slow oxygen-sensor response. These conditions do not prove that 4H0906262M is the failed part. Diagnosis should confirm the cause and the affected sensor position before replacement is selected.
Engine-signal components also have different functions even when they appear in the same diagnostic discussion. For example, the 371F-3611011 camshaft position sensor is a separate product for its own Chery applications. It does not monitor exhaust oxygen and is not an alternative to this Audi/VW Group lambda sensor.
Common Ordering Mistakes to Avoid
- Ordering by Audi model name or 4.0L description without confirming the exact application
- Ignoring upstream, downstream, bank, or exhaust-position differences
- Matching only part of 4H0906262M or relying on an unverified interchange
- Overlooking connector keying, pin count, wire layout, or cable length
- Treating a fault code or fuel-economy change as proof of sensor failure
- Assuming an aftermarket replacement is an OEM or genuine branded part
- Installing or modifying an electrical part before the side-by-side comparison is complete
For more electrical and sensor products, browse the Lighting & Electrical collection. Collection placement is useful for discovery, but it does not establish fitment or interchangeability. Each product requires its own OE number, connector, wiring, position, and vehicle check.
Installation Planning
Professional installation is recommended. Use service information for the exact vehicle to confirm the correct sensor location, access procedure, electrical testing, connector release, wire routing, removal method, tightening specification, and any other exhaust-related precautions. This article does not establish a universal installation procedure.
Before installation, place the new and original sensors side by side. Compare the reference number, connector, pins, wires, cable length, sleeve, threaded section, hex, tip, and overall proportions. If any detail or the intended position differs, do not install or modify the part until the application has been resolved.
Frequently Asked Questions
Is 4H0906262M an upstream or downstream sensor?
The verified listing identifies it as a rear or downstream oxygen sensor where applicable. Confirm the exact bank and position through vehicle-specific service or catalog information.
Which vehicles are referenced?
The listing references selected Audi and VW Group applications, including selected A8, S6, S7, S8, RS7, and related 4.0L models. Compatibility still varies by year, engine, market, exhaust layout, and sensor position.
Is this a genuine Audi or Volkswagen part?
No. The listing identifies it as an aftermarket replacement part, not an OEM or genuine branded product.
What connector is shown?
The product record specifies a red 4-pin style connector. Compare the housing, keying, latch, pins, and wire layout with the original sensor.
How many sensors are included?
The package contains one rear oxygen sensor.
Final Verification Before Ordering
Before adding the 4H0906262M Audi/VW Group rear lambda sensor to your cart, confirm the OE reference, exact vehicle, engine, exhaust position, red 4-pin connector, wire count, cable length, and sensor body. When the catalog evidence and physical comparison agree, you have a stronger basis for selecting the correct 4H0906262M oxygen sensor.