This injection pump locking pin has been designed with ventilation holes to prevent the hydraulic problem of “jacking out”

Used on Volkswagen Lupo 3L 1.2/1.4 TDi, Polo 1.4 TDi, Golf/Bora 1.9 SDi/TDi, Passat 1.9 TD (94-96), Beetle 1.9 TDi (99-) and Transporter 1.9TD