Atmospheric Blow Off Valve for Mercedes-Benz AMG A45 GLA45 CLA45

Main Description

Upgrade the AMG A45 family (including A45, CLA45 and GLA45) with this Atmospheric Blow Off Valve designed for the 2.0 turbocharged M133 engine. This BOV replaces the blanked port on the turbo side, enabling vent-to-atmosphere operation that enhances throttle response and provides a distinctive lift-off sound. When you push the car harder—whether via a remap or on track—the stock setup can hinder driveability under hard acceleration. This valve helps maintain steady turbo behavior, reduces unwanted surge, and protects turbo life by delivering a reliable venting path during lift-off.

Crafted from 100% new aluminum with an anodized black finish, it’s built to withstand heat and vibration in demanding driving conditions. The kit is a true, direct OEM bolt-on fit and comes with a full fitting kit, including a vacuum hose tee-piece, so installation is straightforward for qualified professionals. The product is intended for pre-facelift A45/CLA45/GLA45 AMG 2.0 turbocharged M133 engines and is ideal for remapped engines and track use where driveability matters as much as performance.

All components are designed for a clean, reliable upgrade without compromising safety or emissions compliance. The result is a crisp lift-off response, a characteristic rally-quieting “TSCHH” withdrawal sound, and improved confidence when you mod and push your vehicle beyond stock limits.

Notes: This is a brand-new, never-installed element and is listed as a ready-to-fit upgrade for the specified AMG models. The installation is intended for professional fitment only.

Benefits & Tips

• Sharper throttle response during lift-off, especially when the engine is remapped or pushed on track, leading to more predictable and engaging driving experiences.
• Audible lift-off signature with the classic vent-to-atmosphere sound, helping you feel the turbo’s response in real time.
• Straightforward upgrade with a direct OEM bolt-on fit and a complete fitting kit, reducing installation complexity for professional installers.

Product Specifications

• Model Name: bov
• Engine / Application: 2.0 turbocharged M133 engine in AMG A45, CLA45, GLA45 (pre-facelift)
• Material: Aluminum
• Finish / Color: Anodized black
• Type: Atmospheric Blow Off Valve (Vent to Atmosphere)
• Surface: Anodized
• Color: Black
• Weight: Not specified
• Scope of supply: 1x Atmospheric Blow Off Valve for AMG A45
• Certification: ISO9000
• Origin: Mainland China
• Included hardware: Full fitting kit including vacuum hose tee-piece

Package includes:

• 1x Atmospheric Blow Off Valve for AMG A45

Warnings / Reminders

• All items are to be fitted by a professional and no instructions are included for this reason. Professional fitment is mandatory.

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