Audi 1998-2004 2.7T - DOHC 30 Valve (APB), This Spring requires Ferrea Titanium Retainer #E11031 and Ferrea Spring Seat Locator #SL1025 (Discard OEM Spring Seat Locator). Type/Material/Application: Single Spring - Turbo - Special Alloy (Intake 12 pieces)
Audi 2009-2013 2.0T- TFSI - DOHC 16 Valve, This Spring requires Ferrea Titanium Retainer (INTAKE) # E11139 and (EXHAUST) # E11140 and Ferrea Spring Seat Locator # SL1142.
(Discard OEM Spring Seat Locator) NOTE: Max Net Lift is limited by the OEM factory valve seal installed height.
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