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PRODUCT DESCRIPTION
Product details
Professional dual-piston type 2 blow-off valve (loud, atmospheric) manufactured by PROPERFEKT, supplied with a complete installation kit for:
Opel Astra OPC
Engines: Z20LET, Z20LER
The kit includes all necessary mounting hardware and two springs of different stiffness for the blow-off valve.
Technical Specifications
Type 2 atmospheric blow-off valve
Dual-piston construction
Two interchangeable springs:
Soft spring installed as standard
Hard spring for boost pressure higher than stock
The kit includes:
Type 2 dual-piston blow-off valve
Inlet pipe with MAP sensor connection
Silicone elbow
Blow-off valve blanking plug
Vacuum hose
Two springs (soft and hard)
Additional Information
Maintenance-free operation up to 2.5 bar boost pressure
No adjustments required
Suitable for both low-pressure turbo configurations and high-pressure applications
Installation Notice
Installation by a specialized workshop is recommended
Product designed for competition and track vehicles
Replaces the factory blow-off valve
May cause the engine fault light to illuminate
ECU reprogramming may be necessary to disable persistent fault codes
Warranty and Manufacturing
100% Polish product
2-year manufacturer's warranty
Two free services within 36 months:
Piston cleaning
Lubrication
Availability of spare parts
Possibility of valve regeneration
Custom-made
Delivery time: 2-3 business days
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Fast shipping
Shipping to Spain and Europe, in 5-7 days.
Experts by your side
Over 10 years in the automotive world.
Verified parts
Each reference designed for competition.
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