lower ball joint..10mm or 12mm?

[adscan]

i need to replace the front O/S lower ball jount on my 5 turbo. local motor factors can supply but ask if it is 10mm or 12mm as both are listed on the system.
any ideas?

[Matt@CodeRedMotorsports]

Get both sizes, use the ones that fit the car and return the ones that don't fit the car...thats if the factors will allow you to return the ones that don't fit.