CTS Turbo MK5/6 TSI rear pcv o-ring

The CTS Turbo rear PCV O-ring addresses a common failure point in VW MK5 and MK6 TSI engines. This precision-engineered seal replaces the factory O-ring at the rear PCV connection, eliminating vacuum leaks that cause rough idle, increased oil consumption and check engine lights. Designed specifically for 2005-2010 Golf, GTI and Jetta GLI models, this replacement component restores proper crankcase ventilation system integrity. Essential for workshops performing PCV system maintenance or diagnosing boost leak issues on TSI-equipped vehicles.