BMW E30 Coding Plug Board – M21 to M57 Engine, 6000 RPM Tach

Restore accuracy and functionality to your BMW E30 instrument cluster with the NPN Classics Coding Plug Replacement Board. Designed as a direct replacement for the original BMW part, this plug ensures proper calibration of the tachometer based on your vehicle’s instrument cluster, drivetrain, and engine configuration.

Ideal for gauge cluster swaps, engine conversions, or factory-spec restorations. Features plug-and-play installation – no coding or programming required.

Compatible with:

• Late-model instrument cluster (with 7 SI LEDs: 5 Green, 1 Yellow, 1 Red)
• M21 to M57 diesel engine swap
• 6000 RPM tachometer gauge

Get your gauges back on track – your E30 deserves nothing less.

P.S. If you need a custom coding chip, contact us