Enhance your turbocharged engine’s throttle response and eliminate compressor surge with this 25mm dual piston turbo blow off valve. Designed as a direct plug-in replacement, it quickly vents excess boost pressure when you lift off the accelerator, delivering that iconic blow-off sound while maintaining consistent manifold pressure. Crafted from durable aluminum with a refined black finish, this BOV handles repeated heat cycles and high-pressure environments found in both street-driven and track-focused builds. Compatible with a wide range of popular turbo platforms, it swaps seamlessly into vehicles requiring a standard 25mm inlet pipe. Benefits & Tips
Replace a worn stock diverter valve to restore sharp spool times and reduce turbo lag. Match this unit with 25mm piping runs to prevent vacuum leaks during full-throttle shifts. Double-check your inlet diameter before mounting, as a precise fit seals the system and ensures the dual piston mechanism opens smoothly without hesitation. Product Specifications

Bore Size: 25 mm
Construction: Aluminum alloy body
Finish: Matte black coating
Mounting Type: Plug-in design
Function: Dual piston dump valve

Package includes:

1 × 25 mm Turbo Blow Off Valve

Warnings & Reminders Always confirm your vehicle’s piping measurements and engine configuration match this unit before installation. Manufacturing batches may ship in either an older or newer variant with cosmetic differences, though internal performance remains unchanged. Verify compatibility with supported platforms such as the Ford Escort Cosworth and Sierra Cosworth, VW Beetle/Golf Mk4/Passat/Polo 1.8T, Audi A3 S3/A4/A6 TT 1.8T, and Seat Ibiza/Leon Cupra 1.8T to prevent fitting issues. Contact the seller prior to purchase if your setup differs from standard configurations to avoid unnecessary returns. All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty. Providing quality and trusted service since 2002 at intercyprus.com.

25mm Dual Piston Turbo Blow Off Valve Aluminum BOV With Black Finish