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Agency Power Blow Off Valve Spacers Mercedes C300, C400, C450, C63 AMG


Agency Power

Model #AP-CLA250-150-2

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A blow off valve for the Mercedes 3.0L Turbo V6 or 4.0L Turbo V8 platform is a great upgrade to improve your vehicle's performance and get that incredible turbo whoosh sound from your engine. The Agency Power blow off valve spacer has been engineered to fit between the turbocharger and the factory valve that releases pressure, also known as a "Priority Valve".  In a typical turbo configuration, the turbocharger pressure is recirculated which can cause harmful compressor surge or slow down the spooling of the turbo.  Changing a blow off valve from recirculating to atomosphere venting has been a common practice in turbocharger systems.  Because of the design of the Mercedes turbocharged engines, there is no adverse affects from making this upgrade. Made from billet 6061 aluminum which is precision CNC machined here in the USA, the new valve features 4 holes on either side that vent the turbocharger pressure to atmosphere between gear changes or when you let off the throttle.  Anodized in black for a OEM look, the blow off valve spacer features a laser engraved Agency Power logo and two stylish machined lines around the valve body.  The valve includes required o-rings for a air tight seal.  Because there are no moving parts, this product does require any maintenance or adjustments.


  • Made in the USA
  • OEM-like appearance
  • Lazer Engraved Agency Power logo
  • Includes 2 Blow Off Valve Spacers.
  • All Agency Power products come with a LIMITED LIFETIME warranty when you fill out this form HERE.
  • View Installation Instructions Here


  • Mercedes C300 (Includes 2 Valves)
  • Mercedes C400 (Includes 2 Valves)
  • Mercedes C450 (Includes 2 Valves)
  • Mercedes C63 AMG (Includes 2 Valves)

Proposition 65

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Vehicle Engine Notes
Mercedes-Benz C300

Mercedes-Benz C400

Mercedes-Benz C450 AMG

Mercedes-Benz C63 AMG

Agency Power Industries LLC was developed out of the need to provide quality, functional, and fashionable racing products. Starting from sway bar endlinks for the Subaru WRX back in 2003, Agency Power now has over 300 part numbers for cars ranging from the STI, EVO, M3, 996, TC, and more. Based out of Arizona, Agency Power has established itself as one the core aftermarket companies for Subaru WRX STI and Mitsubishi EVO products. With new focus on the Porsche and BMW market, Agency Power is constantly developing new functional and race proven products. With dealers worldwide, the AP brand is recognized globally. Working with top distributers and tuners in the USA, AP can be found in Singapore, England, Canada, Australia, South Africa, and other parts in the EU.

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