This is machine translation. We apologize for any inaccuracies or faults in translation.
Original is in the Czech language.

pistons

For example:

PISTON VOLVO EC13 XR, EC13 XTV, EC14, EC15, EC15B XT / XTV, EC15B XR, EC 20, EC 20B

PISTON PIN DIAMETER CAN BE 18 OR 21 MM