Piston for Piston pin-Ø 22 mm 1st Oversize B20-

Service instructions:
a brief guide to engine overhaul:

1. wear measurement

2. order of needed pistons

3. the cylinders may not be drilled until the pistons arrive at the overhauling engineer, the measures of oversize pistons may differ between the suppliers, as well as production tolerances (needed sizes may also be sold out)

P1800,  P1800ES. All models from 1969 engines B20-

142, 144, 145. All models from 1969 to 1973 with engines B20-

164. All models until 1973 with engines