Alfa9 Supply

Modern & Vintage Alfa Romeo performance, including the 4C, New Giulia, Stelvio, & Classics.

720-900-6395

Welcome to Alfa9 Supply. Our passion is to provide you a unique range of products to tune your Alfa Romeo 4C, Giulia/Stelvio or Vintage Alfa Romeo.

Whether you have a track car, a canyon carver or a radical daily driver, you can customize it here.

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GFB Diverter Valve for Alfa Romeo Giulia // Stelvio

Copy of GFB Giulia diverter valve
GFB_DV_alfa_Giulia_4.jpg
GFB_DV_alfa_Giulia_12.jpg
GFB_DV_alfa_Giulia_1.jpg
Copy of GFB T9366 Diverter for Alfa Romeo
Copy of Alfa Romeo Diverter Valve, GFB, Quadrifoglio
Copy of GFB diverter valve for giulia stelvio multiair
Copy of GFB Giulia diverter valve
GFB_DV_alfa_Giulia_4.jpg
GFB_DV_alfa_Giulia_12.jpg
GFB_DV_alfa_Giulia_1.jpg
Copy of GFB T9366 Diverter for Alfa Romeo
Copy of Alfa Romeo Diverter Valve, GFB, Quadrifoglio
Copy of GFB diverter valve for giulia stelvio multiair
sale

GFB Diverter Valve for Alfa Romeo Giulia // Stelvio

Sale Price:$143.00 Original Price:$159.00

Alfa9 is now offering the renowned GFB Diverter Valve for Alfa Romeo Giulia and Stelvio 2.0 turbo cars. This is an easy upgrade, adds response and reliability, and is a must on higher mileage 2.0 liter motors to keep you from losing boost pressure in your stock diverter valve. This works on all Giulia and Stelvio models. If you want to use on a 2.9 liter twin turbo Quadrifoglio, please order quantity of 2 valves.

GFB’S DV+ SOLUTION COULDN’T BE SIMPLER – KEEP WHAT WORKS AND REPLACE WHAT DOESN’T.

  • Uses factory solenoid coil for seamless integration

  • Replaces plastic valve parts with metal for reliability and strength – especially important on tuned engines

  • Direct-fit replacement with GFB’s TMS benefits

  • Exclusive “pilot-actuated” valve mechanism for rapid response at high boost

GFB expands the DV+ range with a direct-fit solution for the weak factory diverter valve used on many European vehicles.

The solenoid coil itself from the factory-fitted valve is great- the ECU opens it faster than any pneumatic valve so why replace it? The weak point however, is the valve mechanism itself. GFB’s DV+ solves this problem by replacing the valve parts with an anodised billet aluminium housing, fitted with a brass piston machined to exacting tolerances.

The end result is sharper throttle response, lightning-fast valve actuation, and it will hold as much boost as you can throw at it. Read all about the DV+ story below. Other manufacturers’ products involve replacing the entire system with a traditional pneumatic valve, or include a solenoid valve with the diverter. These approaches add unnecessary cost and additional parts (in some cases requiring long vacuum hose runs, mounting brackets etc). All these additional items result in a product that is slower, less responsive, more expensive, and takes longer to install.

GFB’s DV+ solution on the other hand is more responsive, less expensive, easier to install, and doesn’t cause compressor surge/ turbo flutter. Oh, and it doesn’t require different springs or frequent re-builds either.

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