11658636606 Turbocharger Bypass Valve–Compatible With Mini Cooper S Clubman Roadster Countryman Paceman Turbocharger Diverter Replaces OE# 701115080 11657593273 7566324 11657566324

The Osakesukar Universal Turbocharger Bypass Valve is a high-performance component designed to replace restrictive or failing factory bypass valves and diverter valves in any turbocharged vehicle. As a critical part of your forced induction system, this bypass valve ensures that excess boost pressure is safely released when the throttle closes, protecting your turbo from surge damage while maintaining consistent intake air volume.

• Compatible with Mini Cooper S R55 R56 R57 R58 R59 R60 R61 1.6L. Replaces OE# 701115080 11657593273 7566324 11657566324 11657578683 11658636606.
• Unlike a vent-to-atmosphere blow-off valve that vents boost to the atmosphere, this turbocharger bypass valve is engineered as a 100% recirculating bypass valve that sends excess compressed air safely back into the intake system. This recirculating design helps maintain proper air-fuel ratios and keeps your vehicle's mass airflow sensor (MAF) readings accurate, with no risk of stalling or running rich between shifts. For enthusiasts who want reliable performance without the dramatic sound, this is the perfect choice.
• When you suddenly close the throttle after hard acceleration, a pressure wave slams back into your turbo‘s compressor wheel, causing damaging compressor surge. Over time, this back-pressure can destroy your turbo and severely reduce performance. Our bypass valve instantly recirculates this trapped boost pressure, eliminating damaging surge and protecting your turbo’s life. By preventing unnecessary stress on your engine‘s intake system, you‘ll experience faster spool-up, more reliable power output, and crisper throttle response after every shift or lift.
• Many factory diverter valves use cheap plastic components that crack, leak boost, or fail under sustained high pressure. The Osakesukar Turbocharger Bypass Valve is crafted from high-grade billet aluminum with CNC-machined precision and an anodized finish for exceptional corrosion resistance. The internal design eliminates weak O-ring piston seals—a common failure point—in favor of a precision-tolerance brass piston for smooth, responsive operation. Rated for pressures up to 25 PSI, this valve reliably holds boost without leaking, ensuring you maintain maximum power when you need it most.
• Replacing your factory blow-off valve is one of the easiest performance upgrades you can do yourself. The Osakesukar BOV bolts directly onto most standard flanges (2‑bolt or 3‑bolt patterns). For most vehicles, no welding, fabrication, or special tools are required. You can complete the installation in under 30 minutes using only basic hand tools. It’s an excellent choice for weekend mechanics and enthusiasts who want to add personality and performance to their ride without spending a fortune on labor costs.