Suzuki Swift & Vitara (1.0 & 1.4 BoosterJet & Sport) Dump Valve


Code: FMDV21


Our uprated valve for the Suzuki Swift Sport 1.4 ZC33S & 1.0 Boosterjet (also fits the Vitara 1.0 & 1.4 BoosterJet, providing the engine cover is removed) has been expertly designed and manufactured in the UK, meaning we can provide another industry leading valve for your vehicle.


  • Utilising world leading springs for more precise operation and consistency
  • All internal and external components have been made in the UK, ensuring top quality, and offering a valve with faster response times.
  • The piston uses heat stabilised Viton O-rings
  • Lubricated with high temperature Mobil1 grease to ensure a long life with minimal wear and very long service intervals
  • A super durable and responsive aluminium piston
  • Fully serviceable and rebuildable in minutes
  • Available in anodised black
  • Unlike other valves on the market, ours produces no check engine lights (EML)
  • Covered by the unique Forge Lifetime Warranty*

The Forge Motorsport atmospheric valve is more than just a replacement for the OE diaphragm operated bypass valve – Part No.18119-65H70. Our valve offers serviceability, rapid response, great sound, and can be uprated to your tuning needs.

In The Box:
1 x FMDV21 Valve
1 x 34mm P Clip
1 x 4mm Vacuum Tube
1 x Custom Silicone Hose
1 x Blanking Plug
2 x Cable Tie
2 x Bracket
2 x 32mm Hose Clamps
2 x Allen Cap Bolts
2 x Washers
1 x Nyloc Nut
1 x Forge Sticker

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes sooner

Check out our video instructions to help you with the installation!



  • Suzuki
    • Swift > 1.0 Boosterjet
    • Swift > Sport 1.4 Turbo (ZC33S)
    • Swift > Sport 1.4 Turbo (ZC33S) LHD
    • Vitara > 1.0 BoosterJet
    • Vitara > 1.4 BoosterJet