The GFB DV+ T9396-2 is a twin kit: two complete replacement diverter valves for the 2.9 litre twin turbo V6 in the Giulia and Stelvio Quadrifoglio, where each turbocharger needs its own valve. Each valve carries a low profile integrated solenoid and its own plug and play adaptor loom, so the factory ECU keeps control of when it vents and the air is recirculated rather than dumped to atmosphere. GFB measured the OEM valve leaking 28 L/min at 1 bar of boost; the DV+ holds pressure to 50 psi on a metal piston with a Viton face seal running in a piston seat machined into the valve body. Patented pilot actuation decouples the piston from the solenoid so the valve opens and closes progressively, sharpening throttle response and boost recovery. Fasteners differ by car: the Giulia uses E-Torx and the Stelvio uses regular Torx, and Stelvio access is from under the vehicle.
| Type | Twin kit, two complete replacement diverter valves with integrated solenoids (GFB DV+) |
| Venting | Recirculating; retains factory ECU control through plug and play adaptor looms |
| Material | Metal valve body with integral machined piston seat, metal piston with Viton face seal |
| Actuation | Patented pilot actuation; progressive opening and closing |
| Boost Holding | Holds pressure to 50 psi |
| OEM Leak Measured | 28 L/min at 1 bar of boost |
| Included | 2 valve assemblies, 2 plug and play adaptor looms, coarse thread screw set for plastic flanges (4 Nm), 6 mm metric screw set for metal flanges (6 to 8 Nm) |
| Install Note | Giulia uses E-Torx fasteners; Stelvio uses regular Torx and is accessed from under the vehicle |
| Part Number | T9396-2 |
| Quantity | Pair (2 DV+ diverter valves) |
| Warranty | GFB Lifetime Warranty against defective materials and workmanship, original owner |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2016-2026 | Alfa Romeo | Giulia | Quadrifoglio 2.9 Twin Turbo |
| 2017-2026 | Alfa Romeo | Stelvio | Quadrifoglio 2.9 Twin Turbo |
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