Eventuri Carbon Turbo Tube for Mercedes-AMG A 250, A 35, CLA 35, GLA 35, and GLB 35 (2023 facelift)

The factory turbo tube on the 2023 hybrid facelift A 35, A 250, CLA 35, GLA 35, and GLB 35 uses a ridged flexible section at the airbox side; that corrugated stretch is a known flow restriction that introduces turbulence before air ever reaches the turbo. The Eventuri Carbon Turbo Tube eliminates that flexible section entirely, replacing it with a solid prepreg carbon fiber tube that runs the full length from intake to turbo inlet. Internal volume is also increased over the OEM piece, giving airflow a less restricted path through the entire assembly. To manage the natural movement of the engine without cracking or binding, Eventuri designed a “floating” tube arrangement that allows the carbon tube to move within the airbox housing rather than fighting it. Where the tube meets the turbo housing, a silicone coupler with an internal thermal separator keeps heat from the metal housing out of the carbon tube. The multiple breather connections at the rear of the tube are handled by a CNC-machined block, which consolidates the connections while maintaining a smooth interior surface so airflow through that section stays clean. The turbo-end profile was developed using CFD analysis to reduce turbulence at the entry point, and every component in the kit is built to the same standard as the carbon tube itself.

Comparison with OEM

• The OEM tube narrows through the mid-section as it routes past the engine. Eventuri increased the tube’s internal volume to reduce that restriction, and by eliminating the flexible section entirely, airflow through the tube stays more laminar, which lowers the drag load on the turbo. Engine movement is handled at the airbox instead, where an expanding rubber seal absorbs vibration.

Machined Breather Block

• The breather system uses three attachment points; two of them are complex and demand precise fitment. Eventuri addresses this with a CNC-machined fitment block that allows the breather system to connect exactly as the OEM setup does.

Turbo Coupler

• The coupler at the turbo connection mirrors the OEM flange geometry, locking into the groove around the turbo housing for a secure, rattle-free fit. Internal steps within the coupler match the wall thicknesses of both the carbon tube and the turbo, so the transition between the two is flush and the flow path stays uninterrupted.

Features

• Prepreg carbon fiber construction
• Solid tube design, no flexible mid-section
• Increased internal volume over OEM
• CFD-optimized turbo-end profile
• Floating tube arrangement within the airbox
• Expanding rubber seal at the airbox to absorb engine movement
• Silicone coupler with internal thermal separator
• Coupler locks into OEM turbo groove
• Internal steps in coupler to match wall thicknesses of carbon tube and turbo
• CNC-machined breather fitment block
• Three OEM breather attachment points accommodated
• Smooth internal surface throughout

What’s Included

• Prepreg carbon tube
• CNC-machined breather block
• CNC-machined MAP boss
• CNC-machined reinforcement ring
• Custom turbo coupler with oil resistant lining
• Marine grade stainless steel hose clamps

Applications

• Mercedes-AMG A 35: W117 | 2023-present | M260 2.0L I4 turbo
• Mercedes-AMG A 250: W177 | 2023-present | M260 2.0L I4 turbo
• Mercedes-AMG CLA 35: C118 | 2023-2025 | M260 2.0L I4 turbo
• Mercedes-AMG GLA 35: H247 | 2023-present | M260 2.0L I4 turbo
• Mercedes-AMG GLB 35: X247 | 2023-2026 | M260 2.0L I4 turbo

Notes

• Some images show Eventuri’s intake system available separately
• Designed to fit Eventuri’s intake system only

Frequently Asked Questions

• Why does Eventuri remove the flexible section from the OEM tube? The factory tube uses a ridged, corrugated flexible section at the airbox side that restricts airflow and introduces turbulence before air reaches the turbo. Eventuri replaces the entire tube with a solid prepreg carbon fiber unit, which keeps airflow more laminar and reduces drag on the turbo. Engine movement is managed at the airbox with an expanding rubber seal rather than relying on a flexible tube section.
• How does the tube stay connected to the turbo? A custom silicone coupler locks into the groove around the OEM turbo housing, mirroring the factory flange geometry for a secure fit. Internal steps within the coupler align with the wall thicknesses of both the carbon tube and the turbo housing, keeping the transition flush and the flow path uninterrupted. The coupler also includes an oil-resistant lining and an internal thermal separator to limit heat transfer from the metal housing into the carbon tube.
• What is the CNC-machined breather block for? The M260 engine platform breather system has three attachment points; two require precise fitment. Eventuri’s CNC-machined block consolidates all three connections, replicating OEM fitment while maintaining a smooth internal surface so airflow through that section is not disrupted.

About Eventuri

Eventuri was founded by a team of engineers and enthusiasts with a background in Aeronautics and tuning all sharing a passion for cars and performance. After owning various intakes over many years for their own cars and being disappointed with the gains which seldom lived up to their claims they decided to take things into our own hands and rewrite the book. To set a new benchmark in intake design and technology, above all to engineer systems which provide real gains and then to publish genuine figures. Their systems are extensively developed using cutting edge design, testing and prototyping methods. With a focus on performance, each design undergoes CFD analysis and is then validated at the prototype stage through volumetric airflow, intake temperature and extensive dynamometer testing. They strive to publish all the development information to illustrate the depths they go to in bringing an intake from concept to reality. Only the best materials are selected for each component even down to the choice of fasteners and fixings in order to ensure that the quality of the end product is second to none. After many years of disappointment with the usual aftermarket intakes, they are proud to be raising the bar and creating intake systems which are setting a new standard and genuinely improve the performance of your vehicle.