Mercedes M274 C300 / E300 / GLC300 Diverter Valve Upgrade | GFB DV+ T9358

The GFB DV+ T9358 is a direct-fit diverter valve upgrade for Mercedes M274 engines (C300, E300, GLC300). It replaces the failure-prone factory internals with a billet aluminum body and brass piston while retaining the OEM solenoid for factory ECU control — giving you sharper throttle response, faster boost recovery, and consistent boost pressure. Ideal for daily-driven or lightly tuned vehicles. Part number T9358.

Key Benefits

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

Fitment Compatibility (U.S. Market)

Always verify engine code and factory diverter configuration before ordering.

Why Upgrade the Factory M274 Diverter Valve?

• Factory valves use plastic internals that can leak under sustained 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 drivability and ECU logic.

What You'll Notice on the Road

• More immediate throttle response
• Smoother, more consistent acceleration
• More stable boost on stock or Stage 1 tunes

Technical Highlights

• Part Number: T9358
• Engine Platform: Mercedes M274
• Construction: Billet aluminum body, brass piston
• Install: Direct replacement for the factory diverter assembly