Vemo V20-76-0031 Oxygen Sensor - Rear

VEMO Oxygen Sensor for BMW Rear Applications

The Vemo V20-76-0031 oxygen sensor is built for rear exhaust monitoring on select BMW models, including the BMW Z4, BMW M3, and BMW Z3. With a 4-wire design, round connector, and M18 x 1.5 thread size, it supports accurate lambda feedback for emissions control and engine management.

Key Features

• Part number: V20-76-0031
• Brand line: VEMO
• Part type: oxygen sensor
• 4 conductor / 4-circuit design
• Round connector shape
• Thread size: M18 x 1.5
• Thread pre-greased for service installation
• Cable length: 915 mm
• Sensor length: 105 mm
• Sensor height and width: 21.9 mm
• Rear position application

Product Details

VEMO focuses on OE-style emission control components, and the V20-76-0031 follows that approach with a direct-fit rear oxygen sensor layout for BMW applications. It is specified for 2001-2006 BMW M3 rear, 2001-2002 BMW Z3 rear, and 2006-2008 BMW Z4 rear, with notes indicating use for cylinders 4, 5, and 6 on the listed vehicles. This part cross-references Walker Products 250-24444 for the same application.

What This Sensor Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect rear O2 sensor signal during emissions monitoring
• Fuel trim issues caused by a degraded lambda sensor
• Failed emissions inspection tied to sensor response problems
• Connector or wiring mismatch on rear BMW sensor replacement jobs

Installation Notes and Tips

Confirm the rear sensor location and connector style before installation. The 915 mm cable length and 4-wire configuration should be matched to the vehicle harness routing, and the M18 x 1.5 thread size should be verified against the exhaust bung. Use the vehicle fitment details exactly as listed for BMW M3, BMW Z3, and BMW Z4 rear applications.

Quality Assurance

VEMO V20-76-0031 is an emission control sensor built to match the listed BMW rear applications with the specified connector, wiring, and thread configuration. The pre-greased thread helps support proper sensor installation and serviceability.