Vemo V20-76-0026 Oxygen Sensor - Front, Upstream, Upstream Front or Upstream Rear

VEMO Oxygen Sensor for BMW Front Applications

The Vemo V20-76-0026 is a 4-wire oxygen sensor for select BMW front and upstream positions. It uses an M18 x 1.5 thread, a round connector shape, and a 340 mm lead length to match common OE-style exhaust routing on covered applications.

Key Features

• Part number: V20-76-0026
• Brand line: VEMO
• Oxygen sensor for emission control systems
• 4 conductor / 4 circuit design
• Round connector shape
• Thread size: M18 x 1.5
• Lambda sensor with thread pre-greased
• Lead length: 340 mm
• Fits front, upstream front, upstream rear, and upstream positions on listed BMW applications

Detailed Description

VEMO focuses on OE-style replacement parts, and this oxygen sensor follows that approach with the connector, thread, and lead length details needed for direct-fit service on covered BMW models. The V20-76-0026 is listed for a wide range of BMW 3 Series, 5 Series, X3, X5, Z3, Z4, Z8, 7 Series, 8 Series, and M5 applications, including front and upstream sensor locations. This part cross-references Delphi ES10899 and Walker Products 250-24611 for the same application.

Compatible With BMW X3 front oxygen sensor replacement, BMW X5 front upstream sensor service, and BMW 325i front O2 sensor applications where a 4-wire, round-connector sensor is specified. The V20-76-0026 is also listed for BMW 330i, 530i, and 540i front positions, making it a practical match for emission control repairs across multiple model years.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio readings
• Slow or unstable sensor response
• Emissions test failures tied to sensor faults
• Rough idle or drivability issues caused by inaccurate exhaust feedback

Installation Notes and Tips

Verify the connector shape, thread size, and lead length against the original sensor before installation. This sensor uses an M18 x 1.5 thread and a 4-conductor layout, so confirm the vehicle harness and exhaust bung match the listed specifications. For best results, compare the original sensor location and routing on BMW front or upstream positions before replacement.

Quality Assurance

VEMO is used for OE-style replacement components in emission control and sensor categories, and this oxygen sensor is cataloged with application-specific fitment data for BMW models from 1995 through 2006.