Z19DTH Swirl Flap Manifold Plug Set

If you’re running a Z19DTH or Z19DTJ engine, you know the pain of failed vortex (swirl) flaps—smoke, rough idle, power loss, and increased fuel consumption. This aluminum plug set is the permanent fix for enthusiasts who want reliability and peace of mind, especially if you’re chasing consistent performance or prepping for a tune. Designed for a clean, robust seal after swirl flap removal, it’s the right way to future-proof your manifold.

Fitment

• Alfa Romeo (939A200, 1.9 MultiJet JTDM 16V 110 kW / 150 KM)
  • 147 – 1.9 JTDM 8v 2005+ [120 KM]
  • 147 – 1.9 JTDM 16v 2005+ [150 KM]
  • 147 – 1.9 JTD 16v 2004+ [136 KM]
  • 156 – 1.9 JTD 2003-2005 [126 KM]
  • 156 – 1.9 JTD 2004-2005 [150 KM]
  • 156 Sportwagon – 1.9 JTD 16v Q4 2004-2006 [150 KM]
  • 156 Sportwagon – 1.9 JTD 2005-2006 [150 KM]
  • 156 Sportwagon – 1.9 JTD 2003-2006 [126 KM]
  • 159 Saloon – 1.9 JTDM 8v 2005+ [120 KM]
  • 159 Saloon – 1.9 JTDM 8v 2005+ [115 KM]
  • 159 Saloon – 1.9 JTDM 16v 2005+ [136 KM]
  • 159 Sportwagon – 1.9 JTDM 8v 2006+ [120 KM]
  • 159 Sportwagon – 1.9 JTDM 8v 2006+ [115 KM]
  • GT – 1.9 JTD 2003+ [150 KM]
• Fiat (Engines M91 & M92)
  • Croma – 1.9 D Multijet 2005+ [150 KM]
  • Stilo – 1.9 D Multijet 2005+ [150 KM]
  • Stilo Multi Wagon – 1.9 D Multijet 2005+ [150 KM]
• Opel / Vauxhall (Engines Z19DTH & Z19DTJ)
  • Astra Mk V (H) – 1.9 CDTi 2004-2009 [150 KM]
  • Astra Mk V (H) – 1.9 CDTi 2004-2009 [120 KM]
  • Astra Mk V (H) Estate – 1.9 CDTi 2004-2009 [150 KM]
  • Astra Mk V (H) Sports Hatch – 1.9 CDTi 2004-2010 [150 KM]
  • Astra TwinTop Mk V (H) – 1.9 CDTi 2006+ [150 KM]
  • Astravan (H) – 1.9 CDTi 2005+ [150 KM]
  • Signum – 1.9 CDTi 16v 2004-2008 [150 KM]
  • Vectra MK II (C) – 1.9 CDTi 16v 2004-2005 [150 KM]
  • Vectra MK II (C) GTS – 1.9 CDTi 16v 2004-2005 [150 KM]
  • Vectra MK II (C) Estate – 1.9 CDTi 16v 2004-2005 [150 KM]
  • Zafira MK II (B) – 1.9 CDTi 2005-2011 [150 KM]
• Saab (Engines Z19DTH & Z19DTJ)
  • 9-3 Saloon – 1.9 TiD 2004+ [150 KM]
  • 9-3 Convertible – 1.9 TiD 2006+ [150 KM]
  • 9-5 Saloon – 1.9 TiD 2006+ [150 KM]
  • 9-5 Estate – 1.9 TiD 2006+ [150 KM]
• Fits original Pierburg intake manifolds
• Part numbers: 93179055, 55206459, 55182684, GM – 55210201

Material & Construction

• High-quality aluminum PA6 construction

Technical Specifications

• No specific sizes, ratios, or dimensions stated

What’s Included

• Set of aluminum swirl flap caps
• BONDLOC sealant for installation

Installation Notes

• Remove original swirl flaps and control rod, leaving only the cable drive
• Apply included sealant to plugs and install in place of swirl flaps for a strong, reliable seal

FAQ

• Does this kit fit Pierburg intake manifolds?
  Yes, it is designed for use with original Pierburg intake manifolds as found on listed applications.
• Do I need to modify the intake manifold to install these plugs?
  No modifications are required beyond removing the original swirl flaps and control rod; the plugs install directly in the existing holes.
• Is everything required for installation included?
  Yes, the kit includes the aluminum plugs and BONDLOC sealant necessary for a proper install.