The Volvo Parts
The Volvo Parts Specialists Since 1963 The Volvo Parts, Accessories & Performance Specialists Since 1963
The Volvo Parts, Accessories &
Performance Specialists Since 1963

Heavy Duty Compressor Bypass Valve

IPD - 124917

IPD Item Number
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Product Description


Ipd's heavy duty compressor bypass valve (HD CBV) upgrades the stock components to help you maximize boost development while properly protecting the turbo from boost surge that can come from higher than stock boost levels. Our kit is complete and comes with a new HD diaphragm, standard replacement spring, 10lb & 14lb springs and a new follower.

Symptoms of torn or failing factory CBV's are:

  • Delayed boost developement or low boost across the board
  • Fluttering or surging when closing the throttle when in boost
  • Erratic boost developement

Spring selection...
The stock spring is 8 lbs and good for up to 12 lbs of boost. The included blue spring is 10 lbs and good for up to 17 lbs of boost. The included red spring is 14 lbs and good for up to 25 lbs of boost.

It's better to go conservative with your spring selection, if you're running 16 psi boost, run the 10 lb spring as it is the closest given your boost pressure. If you're pushing 19+ psi then step up to the red 14 lb spring.

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IPD is the Volvo Parts, Accessories and Performance Specialists Since 1963.

We offer a wide variety of high quality replacement, maintenance and restoration car parts plus our own line of heavy duty and performance products. Our custom built online parts catalog features Genuine, OE, OES, OEM, Aftermarket and IPD branded replacement auto parts.

Combine our unmatched 50+ year reputation with our outstanding customer service team and you can be confident we'll be here to serve your Volvo needs long in to the future. Not many others can match our knowledge and dedication to providing the very best customer service in the market. We have a physical location, live customer service agents you can call and extensive inventory so we can ship products to you quickly. Our customer and vehicle first approach means that your experience is our first priority. We have truly hassle-free returns and provide do-it-yourself (DIY) guides and videos for many of our products.

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