Here is a New Old Stock Lockheed (ATE) 17.5mm Rear Wheel Cylinder Repair Kit (for one side) for 

Aidi

80 Series 1 1.3 Automatic 8/1974-

80 Series 1 1.5 Automatic 8/1974-75

80 Series 1 1.6 Automatic 8/1974-79

80 Series 3 1.6 Turbo Diesel 1582cc 1986-88

80 Series 3 1.6 Turbo Diesel 1588cc 1988-91

100 Series 1 1.9 1974-76

100 Series 1 1.9 Coupe 1974-76

100 Series 2 1.6 1976-82

100 Series 2 2.0 1976-82

100 Series 2 2.0 Diesel 1976-82

100 Series 2 2.2 1976-82

100 Series 3 1.8 1983-86

100 Series 3 1.9 1983-91

100 Series 3 2.0 Turbo Diesel 1983-91

100 Series 3 2.2 (2226cc) 1984-91

100 Series 3 2.2 Quattro 1985-91

100 Avant Series 2 1.6 1978-82

100 Avant Series 2 2.0 1978-82

100 Avant Series 2 2.0 Diesel 1978-82

100 Avant Series 2 2.2 1978-82

100 Avant Series 3 1.8 1983-86

100 Avant Series 3 2.0 Turbo Diesel 1983-91

100 Avant Series 3 2.2 (2144cc) 1983-84

100 Avant Series 3 2.2 (2226cc) 1984-91 models.