Re-manufactured Service Interval (SI) cluster board for BMW E23, E24 and E28 models. Original SI boards used small onboard batteries that commonly leaked with age, causing corrosion and failure of the cluster electronics. This new replacement board is a fully re-engineered unit with all components and connectors pre-installed. It preserves all original SI functions but eliminates battery leakage issues entirely, as data storage is now handled by modern integrated memory chips. Installation is plug-and-play, requiring no coding, programming or special tools.

Compatible with BMW models equipped with 3-LED SI clusters (not suitable for later 1-LED versions):

BMW E23 (09/1981–01/1986):
725i, 728i, 732i, 733i, 735i, 745i with temp and fuel level gauges in the middle of the cluster

BMW E24 (05/1982–01/1986):
628CSi, 635CSi, M635CSi with temp and fuel level gauges in the middle of the cluster

BMW E28 (02/1981–01/1986):
518, 518i, 520i, 524d, 524td, 525i, 525e, 528e, 528i, 533i, 535i, 535is, M535i, M5 with 3 red service interval lights in the middle of the cluster

Replaces original BMW part numbers:
62 11 1 394 270 — 62111394270
62 11 1 376 730 — 62111376730
62 11 1 373 499 — 62111373499
62 11 1 371 289 — 62111371289
62 11 1 371 287 — 62111371287

Parts included:

– 1x Service Interval cluster PCB board

How to repair your E23,E24 or E28 cluster – SI and main back board replacement tutorial

POSSIBLE TO mix and match with OEM parts.

Current version of SI borad is in black PCB color.

Lead time: 1-2 days