OPEL VAUXHALL ASTRA J SPORTS TOURER. I. Fitting Position. Exhaust Side; Intake Side. Intake Side. 23855; 23882; 24264; 24371; 24373; 24542; 24731; 24743; 24747; 28. We will get back to you as soon as possible in 1-2 working hours and in 24 hours during the weekend.