GFB DV+ T9358 Diverter Valve Upgrade for Mercedes 1.8 Turbo C250 SLK250

GFB DV+ T9358 Diverter Valve for Mercedes M271

The GFB DV+ T9358 is a direct-fit diverter valve upgrade for Mercedes M271 turbo engines, designed for C250 and SLK250 platforms. It replaces failure-prone factory internals with precision billet aluminum and a brass piston while retaining the OEM solenoid for factory ECU control. The result is sharper throttle response, faster boost recovery, and consistent boost pressure—ideal for daily-driven or lightly tuned vehicles.

• 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

M271 Platform Compatibility (U.S.)

Fits U.S.-market M271-equipped vehicles listed above. Always verify engine code and factory diverter configuration before ordering.

Why Upgrade the Factory M271 Diverter Valve?

• Factory valves rely on plastic internals that can leak under 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 without altering ECU logic or drivability.

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 M271
• Construction: Billet aluminum body, brass piston
• Install: Direct replacement for factory diverter assembly

Upgrade your Mercedes M271 with the GFB DV+ T9358 for OEM-level fitment, sharper response, and long-term boost reliability on the C250 and SLK250 platform.