A Genuine SU H4 Carburettor Dashpot Piston Spring 

Used

Austin Princess circa 1949 ( 3993cc 6 Cylinder with twin H4 thermo SU carbs  ) 

Free moving & smooth

AUC 4628 ( piston part number )

Fixed / static FU needle type - correct for Austin Princess 1949

In used condition with marks, tarnishing dirt & scratches to the metal 

Actual items pictured - please zoom in 

KT22