Audi 1998-2004 2.7T - DOHC 30 Valve (APB) Valve Stem Size: 6 mm Diameter (A): 21 mm Inn Step Diameter (C): 15.15 mm References: Intake (18 pieces) Single Spring-7 Degree Pro CNC Ferrea Racing Springs #S10055
Audi 1998-2004 2.7T - DOHC 30 Valve (APB) Valve Stem Size: 6 mm Diameter (A): 28.20 mm Out Step Diameter (B): 22.85 mm Inn Step Diameter (C): 17.15 mm References: Exhaust (12 pieces) Double Spring-7 Degree Pro CNC Ferrea Racing Springs
Audi 2006-2008 2.0T FSI - DOHC 16 Valve Valve Stem Size: 6 mm Diameter (A): 22.22 mm Inn Step Diameter (C): 16.13 mm References: Single Spring-7 Degree Pro CNC (16 Pieces) Ferrea Racing Springs #S10121
Audi 2009-2013 2.0T TFSI- DOHC 16 Valve Valve Stem Size: 6 mm Diameter (A): 20.32 mm Inn Step Diameter (C): 15.75 mm References: Intake (8 pieces) Single Spring-7 Degree Pro CNC Ferrea Racing Springs #S10157
Audi 2009-2013 2.0T TFSI- DOHC 16 Valve Valve Stem Size: 6 mm Diameter (A): 20.32 mm Inn Step Diameter (C): 15.75 mm References: Exhaust (8 pieces) Single Spring-7 Degree Pro CNC Ferrea Racing Springs #S10157
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