RaceWerks M276 BOV Vent to Atmosphere

Performance at an insane value!

Convert your factory diverter system into a true “blow‑off” setup with this VTA adapter. This adapter allows you to enjoy that signature turbo “psshh” sound by venting excess boost to atmosphere all while keeping your factory diverter valves and avoiding check engine lights or ECU tuning.

The M276’s stock diverter system recirculates air silently back into the intake. Our VTA adapter reroutes that airflow to atmosphere, giving your turbo system the audible presence it deserves without compromising performance or reliability.

Key Features

CNC-Machined from Billet Aluminum — Built from a solid block of aircraft-grade aluminum for maximum strength, durability, and precision fitment

Direct Bolt-On Install — No cutting, wiring, or permanent modifications needed

No ECU Tune Required / No CEL — Maintains factory electronics and diverter function

Hard Anodized Finish — Protects against corrosion and high heat

Includes All Hardware — Gaskets and bolts included for a hassle-free install

Aggressive Turbo Sound — Hear the “whoosh” of vented boost under throttle lift-off

Ease of install — Step by step installation instructions can be provided. Only a few tools are required

Fitment / Compatibility

Fits all Mercedes-Benz vehicles equipped with the M276 3.0L Twin-Turbo V6, including but not limited to:

C43 AMG

GLC43 AMG

E400 / E450

S450

CLS450

GLS450

Other M276-powered models

Compatible with factory electronic diverter valves. Not for non-turbo models.

What’s in the Box

x2 RaceWerks CNC Billet Aluminum VTA Adapters

x4 O‑ring Seals

Stainless Steel Mounting Hardware

Installation Notes

Plug-and-play fitment

Uses factory diverter valves

No tuning or ECU changes needed

Ensures proper seal to avoid boost leaks with high pressure gaskets

Compatible with stock or aftermarket intakes

Sound & Performance

While this VTA adapter doesn't add horsepower directly, it enhances the driving experience with an aggressive blow-off sound and maintains full OEM functionality. Because it works alongside the factory diverter, boost is safely managed with no performance loss.

Legal Notice

For off-road or race use only in some regions (check local regulations)

Not CARB-certified for California emissions compliance

Always inspect for proper installation to prevent leaks or damage