Set 4 Fuel Injector Inserts Cup Seat For VW Jetta MK4 2000-2005 Upgrade Aluminum
SET 4 Fuel Injector Inserts Upgrade Aluminum For VW Jetta MK4 2000 2001 2002 2003 2004 2005. For VW Jetta MK4 2000 2001 2002 2003 2004 2005. These are Billet aluminum inserts that are screwed into the injector opening on the fuel rail.