Brake Master cylinder for BMW 528i,533i,535i,633csi 7/81 on E24,E28, (W/O ABS) 
From 07 / 1981 On
And BMW 520 i E28, From 09 /1984 On,  
Please Note!
This Brake Master Cylinder can also be used for BMW 520i E28 from 09 / 1984 On,  Requiring 2 x 8 mm Nuts Supplied !
Under BMW Part Number 3431 1153 919

BMW Part No. 3431 1153 053
ATE   Part No. 03.2123-8312.3 
MADE in GERMANY  by ATE Original Equipment Manufacturer for BMW