1.8T - DOHC 20 Valve Valve Stem Size: 6 mm Diameter (A): 21 mm Inn Step Diameter (C): 15.15 mm References: Intake (12 pieces)Single Spring-7 Degree Pro CNC Ferrea Racing Spring # S10120
1.8T - DOHC 20 Valve 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 (8 pieces)Double Spring-7 Degree Pro CNC Ferrea Racing Spring # S10056
2.8L - DOHC 24 Valve (BDF) Valve Stem Size: 6 mm Diameter (A): 20.57 mm Inn Step Diameter (C): 15.5 mm References: Single Spring-7 Degree Pro CNC- Ferrea Racing Springs #S10087 This retainer has to be used with OEM valve lock
3.2L - DOHC 24 Valve Valve Stem Size: 6 mm Diameter (A): 24 mm Out Step Diam.(B): 18.3 mm In Step Diameter (C): 10.79 mm References: Dble Spring-7 Degree Pro CNC- Ferrea Racing Springs #S10148 Use Factory OE valve locks
2.0L Turbo 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
2.5L - DOHC 20 Valve (BTW) Valve Stem Size: 6 mm Diameter (A): 22.38 mm Inn Step Diameter (C): 15.52 mm References: Single Spring-7 Degree Pro CNC- 16 pieces Ferrea Racing Springs #S10162
VW 2009-2013 2.0T TSI- 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 Use Factory OE valve locks
VW 2009-2013 2.0T TSI- 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 Use Factory OE valve locks
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