SIB2X-D – BMW E28 / E23 / E24 SI Dummy Board

SI Dummy Board – Simplified Fix for SI Board Failures

Tired of dead gauges caused by leaked SI board batteries? The SI Dummy Board is your no-fuss solution.

Designed for BMW E28, E24, and E32 clusters, this board restores all essential instrument functions without the complexity or cost of a full SI board replacement.

What it does:
•  Bypasses the failed SI board and alkaline batteries
•  Restores tachometer, fuel economy gauge, and other cluster functions
•  Plug-and-play fit (OEM-style compatibility)

What it doesn’t do:
•  No Service Interval calculation
•  No SI LEDs control

This board is ideal for budget-conscious or minimalist builds where SI functionality isn’t a priority. If you want a clean, working dash without worrying about interval lights, this is the board for you.

Straightforward. Reliable. Affordable.

Includes Installation Hardware – Comes with 3 brand-new replacement screws (to replace rusted originals) and a new pin header (to replace possibly corroded Pin Header on the mainboard).

Installation: Plug-and-play design - no modifications required! Includes pin header for soldering if needed.

What's Included:
•  1x SI Dummy Board (Direct Replacement for Early BMW E23 / E24 / E28 Clusters)
•  3x Replacement Screws (for rusted originals)
•  1x New Pin Header (for corroded connections)
•  1x Replacement guide

Compatible Models:
•  BMW E23 / E24 / E28 (Early Models with 9 SI LEDs)

Upgrade your BMW’s reliability today - order now and eliminate SI board failures for good!