GEN 5 MQB Haldex Spring Upgrade 

Increase your clamping pressure beyond stock with our upgraded pressure relief spring.

Stock Relief Spring Pressure – 44Bar

Upgraded Spring Pressure – 65Bar – 50% increase

Suitable for all MQB Gen5 Haldex units 0CQ 907 554 & 0AY 907 554

This upgrade is essential for our Haldex.Flash custom tuning feature for anything over 60% PWM 

(May be compatible with other tuning solutions however this has not been tested) 

*Pressure relief valve body not included