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1.4T Upgraded Bypass Valve Spring

Turbo Parts & Kits - 1.4T Upgraded Bypass Valve Spring
Turbo Parts & Kits - 1.4T Upgraded Bypass Valve Spring

One of the best parts of owning a turbo car are the turbo noises, and who doesn’t want more of those? This is the perfect quick upgrade for your 1.4L Sonic or Cruze. Simply swap this upgraded spring in for the stock bypass valve spring and you’re good to go. The upgraded spring will get you more pronounced BPV/BOV noise along with reduced off throttle whistle. Note: this does not provide any performance benefit. 

Fits: LUV/LUH/LUJ stock turbo and ZZP Big Wheel turbos. Cannot guarantee compatibility with competitor's turbos.  

Turbo Parts & Kits - 1.4T Upgraded Bypass Valve Spring
Turbo Parts & Kits - 1.4T Upgraded Bypass Valve Spring
Customer Reviews
4.8 Based on 18 Reviews
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Ben H.
United States

ZZP Bypass Spring Upgrade

Good quality well-made much stiffer than the stock spring.

Hunter S.
United States United States

No difference but no big deal.

Got here fast and it wasn’t too bad of an install, but I was somewhat disappointed that my car sounded exactly the same as before. For $15, I’m not really too frustrated, no harm I guess.

Logan S.
United States United States

Non of the parts go to the Cruze like the description stated

I purchased 1.4T high voltage coil pack/ 1.4t valve cover an NGK iridium plugs along with the1.4T bypass valve spring each one stated they were for the 1.4T which I was quickly proved wrong where as not a single part goes to the car

Kelvin S.
United States United States

Very happy

Very well made product

Keith Z.
United States United States


To be honest the spring did not create any extra noise or sounds enhancement above what I had already experienced with my stock spring setup, I run a K&N short ram intake and deleted the resonator, which already gave a good noise for the turbo, the new zzp spring didn’t enhance the sound any further than what it already was enhanced to by my setup. No harm no foul though for the price it was worth a shot.