GFB DV+ T9358 Diverter Valve Upgrade for Mercedes-AMG M276 3.0TT

The GFB DV+ T9358 is a direct-fit diverter valve upgrade for the Mercedes-AMG M276 3.0L twin-turbo V6 (C43, E43, GLC43, GLE43, S400). It replaces the failure-prone factory plastic internals with a billet aluminum body and brass piston while retaining the OEM solenoid for full ECU control — sharpening throttle response and speeding boost recovery between shifts. Part number T9358.

Important: The M276 3.0TT uses two diverter valves. You need two (2) DV+ T9358 units for a complete upgrade.

Key Benefits

• Immediate throttle sharpness
• Faster boost recovery between shifts
• Eliminates common factory boost leaks
• OEM solenoid retained for full ECU control
• Billet aluminum body + brass piston
• No tuning or resistors required

Fitment Compatibility (AMG M276 3.0TT)

Fits U.S.-market AMG M276 3.0TT vehicles listed above. Always verify engine code before ordering.

Why Upgrade the Factory Diverter Valve?

• Factory plastic internals leak under boost — the DV+ uses billet aluminum and a brass piston for rock-solid sealing.
• Noticeably sharper throttle and faster boost recovery between shifts.
• Pilot-actuated design gives progressive, predictable response instead of the sloppy factory valve.
• Reduces turbo flutter and compressor surge on lift, keeping power delivery clean and consistent.

What You'll Notice on the Road

• Crisp, immediate throttle response
• Faster boost recovery between shifts
• Smoother, stronger mid-range pull

Technical Highlights

• Part Number: T9358
• Engine Platform: Mercedes-AMG M276 3.0TT
• Quantity Required: 2 units per vehicle
• Construction: Billet aluminum body, brass piston
• Install: Direct replacement — roughly 10 minutes per side

FAQ

Is this a blow-off valve?
No. Modern AMG turbo engines use a recirculating diverter valve for smooth drivability and OEM reliability. The DV+ improves performance without loud vent-to-atmosphere noise.