what size torq astra mk5 1.6 ecotec auxillary

[alan6767]

can any one help please i have a astra mk5 1.6 ecotec what size torq socket for a auxillary belt tensioner

[El Joffo]

12 sided 19mm

[alan6767]

Thanks for your help

[alan6767]

Is that Allen key or socket tjanks

[alan6767]

Is that Allen key or socket tjanks is it a torq to remove the belt

[El Joffo]

Just a standard socket with 12 sides. Doesn't look right but worked for me. Spring is tough though!