Article by: Max F Applies to: early E24, E31 (850), and early E32 (735 and 750) models. The ATE brand hydraulic brake booster on the older E32 vehicles is one of the oddities of the model. The system, known to BMW as the ‘H31’ system, runs the brake boost with […]

Article by: MaxF Applies to: early E24, E31 (850), and early E32 (735 and 750) models. While I had the chance, I thought I’d take the old ATE H31 booster apart to see if they are really as “non-rebuildable” as everyone says. . .  I’m also aware of those of […]