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

Designed as a direct replacement for the OEM valve which is prone to failure when the engine has been tuned or had an upgrade to the engine management software. This valve is complete and ready to install with no fitting kit required.

This valve is supplied assembled with our "green" coded spring which is suitable for standard or mildly tuned engines, and also comes with an uprated 'yellow' coded spring. 

This valve is suitable for:

• Vauxhall/Opel Astra G or H type Z20LET Engine
• Astra VXR J Type
• Astra 1.6 GTC
• Corsa VXR 1.6 Turbo Z16LER Engine
• Vauxhall Zafira A or B with Z20LET Engine
• Bentley Continental GT 2003-11

In The Box:
1 x FMDVK04D Valve
1 x Uprated Yellow Spring
1 x Forge Sticker

If you wish to tune this product to fit the needs of your engine, please see the spring tuning kit below.

Please note: In certain car models the removal fo the O.E mounting bolts may be better facilitated by grinding down the short leg of the appropriate Allen key to 10mm long