Product Description:

The Brabus BoostXtra is a high-performance atmospheric blow-off valve (BOV) adapter designed specifically for turbocharged Mercedes-Benz engines. In a factory setup, the turbocharger uses a recirculating system that quietly vents excess pressure back into the intake. The BoostXtra modifies this by venting that "propulsion air" directly into the engine compartment, providing a mechanical solution for owners who want the definitive "1-Second-Wow" acoustic experience.

• Billet Aluminium Construction: Precision CNC-machined from high-grade billet aluminium, ensuring it can withstand the high temperatures and pressures found in the engine bay of a Brabus-tuned supercar.

• Signature Brabus Finish: Typically finished in a vibrant Brabus Red or a sleek Signature Black anodised coating, acting as a visual highlight among the engine components.

• Compact "Sandwich" Design: The adapter is designed as a spacer that sits between the factory electric solenoid and the turbocharger housing.

Technology & Performance

• The "Blow-Off" Sound: The primary function is to generate the iconic "pshh" or "whoosh" sound when the driver lifts off the throttle. This atmospheric venting mimics the auditory profile of high-performance racing turbochargers.

• Engine Protection: By quickly venting excess boost pressure during deceleration, the BoostXtra helps reduce turbo lag and protects the turbocharger's bearings from "surge," potentially extending the lifespan of the turbo components under high load.

• Plug & Play Integration: It is engineered to work seamlessly with the original Mercedes-Benz electronic solenoid. Unlike universal BOVs, the BoostXtra does not trigger "Check Engine" lights or fault codes because the vehicle's ECU still believes it is controlling the factory recirculating valve.

Technical Specifications

• Primary Part Numbers: * 177-740-500: For M177/M178 V8 engines (G63, E63, C63, AMG GT).

  • 139-740-5000: For M139 4-cylinder engines (A45 AMG W177).

• Wide Compatibility: Available for a vast range of models including the G-Class (W463A/W465), C-Class (W205/W206), S-Class (W222/W223), and GLE/GLS (V167/X167).

• Kit Scope: Usually supplied as a complete set, including the adapter(s)—two are required for V8 Bi-Turbo models—and the necessary extended mounting bolts.

Installation

• Workshop Installation: While the physical mounting is a "simple interwinding solution," Brabus strongly recommends installation by a specialised tuning workshop.

• Model Specific: Because Mercedes uses various turbocharger configurations, it is essential to verify the VIN (Vehicle Identification Number) to ensure the correct adapter thickness and bolt pattern.

Before installing your new tuning parts, please review and keep our Aftercare Guide for future reference - View Guide