20-Pin Diagnostic Adapter Cable for 1992-2006 BMW E34 E36 E38 E39 E53

Product Details

Diagnostic adapter cable that connects a compatible scan tool with a standard 16-pin female OBD-style plug to the round 20-pin diagnostic connector used under the hood of many earlier BMW vehicles.

• Round 20-pin male BMW connector
• 16-pin female diagnostic-tool connector
• Allows a compatible scanner to physically connect to the under-hood port

This is a passive connector adapter. It does not convert diagnostic protocols, add unsupported functions or guarantee access to every vehicle module.

Fitment and Compatibility

• 1992-1999 BMW E36 3 Series and E36/7 Z3
• 1992-1995 BMW E34 5 Series
• 1996-2000 BMW E39 5 Series
• 1995-2001 BMW E38 7 Series
• Select 2000-2006 BMW E53 X5 applications with the round under-hood port
• Other BMW, MINI, E83 X3 or E85 Z4 applications only when equipped with the matching round 20-pin diagnostic connector

Inspect the vehicle for the round under-hood socket and confirm that the scan tool supports the required BMW protocol.

Part Number Information

No single BMW OE part number applies to this aftermarket diagnostic adapter. Identify it by its round 20-pin male to 16-pin female connector configuration.

Package Contents

1 × BMW 20-pin-to-16-pin diagnostic adapter cable. Scan tool and software are not included.

Installation Notes

Switch the ignition off before connecting or disconnecting the adapter. Connect the round plug without forcing or rotating against the pins, then attach a compatible scan tool. Follow the scan-tool manufacturer's instructions and do not use the cable for powering unrelated equipment.