BW s372 thread size ??

[Kris H]

hi,,

 

can somone tell me the size of the -4an fitting that goes into the oil feed of the turbo??

 

i got a 1/4npt to -4an straight but it doesent fit just right ??

 

also got 12x1.25 to -4an for the block but that dont fit the turbo either

 

any help much appreciated,

 

thanks.