GFB DV+ T9358 Diverter Valve Upgrade for Mercedes 3.0 V6 Bi-Turbo (C43 AMG / E43 / GLC43 / GLE43)

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

The GFB DV+ T9358 is a direct-fit diverter valve upgrade for Mercedes-AMG 3.0L twin-turbo engines (M276), engineered for AMG C43, E43, GLC43, GLE43, and S400 platforms. It replaces failure-prone factory internals with precision billet aluminum and a brass piston while retaining the OEM solenoid for full ECU control. The result is sharper throttle response, faster boost recovery, and reliable boost holding—ideal for stock or tuned AMG applications.

Important: Mercedes-AMG 3.0TT (M276) engines use two diverter valves. Two (2) DV+ T9358 units are required for a complete installation.

Often confused with a blow-off valve (BOV), a diverter valve recirculates boost back into the intake for smoother drivability, quieter operation, and OEM reliability—making it the correct upgrade for modern Mercedes-AMG turbo engines.

• Sharper throttle response
• Improved boost recovery between shifts
• Eliminates common factory boost leaks
• OEM solenoid retained
• Billet aluminum & brass piston
• No tuning or resistors required

AMG 3.0 Bi-Turbo (M276) Platform Compatibility

Fits U.S.-market AMG 3.0TT (M276) vehicles listed above. Always verify engine code and factory diverter configuration before ordering.

Why Upgrade the Factory AMG 3.0TT Diverter Valve?

• Factory diverter valves use plastic internals that can leak under higher boost
• DV+ replaces only the weak components—no spacers or adapters
• Pilot-actuated design responds progressively to boost pressure
• Helps reduce turbo flutter and compressor surge under lift

Unlike spacer-style solutions, the DV+ improves sealing and response while preserving factory ECU logic and AMG drivability.

What You’ll Notice on the Road

• Immediate throttle and boost response
• Smoother, stronger mid-range power delivery
• Consistent boost pressure on shifts and under load

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 for factory diverter assembly

FAQ

• Is this a blow-off valve?
  No. Modern Mercedes-AMG turbo engines use a diverter valve that recirculates boost for smoother drivability and reliability. The DV+ improves performance without loud vent-to-atmosphere noise.

Upgrade your Mercedes-AMG 3.0TT with two (2) GFB DV+ T9358 units for complete OEM-level fitment, sharper response, and reliable boost control on stock or tuned AMG platforms.