Valve Kit Alu Dump Recirculation Blow Off for BMW 1/3/5 Series F20-F31

This Valve Kit Alu Dump Recirculation Blow Off is a bolt-on, piston-type diverter valve kit designed for BMW 1/3/5 Series vehicles with the N20 2.0 Turbo engine. Specifically compatible with F20/F21/F22/F23/F30/F31 chassis and commonly found on models badged as 125i, 225i, 220i, 228i, 320i, 328i, 520i, and 528i. The kit replaces factory components to prevent boost leaks when the diaphragm rips or piston wears, delivering reliable boost control and improved throttle feel over time.

Engineered for longevity, this valve uses CNC billet aluminum construction with high-temperature Viton O-rings and a compact vacuum space to ensure fast piston opening and reduced boost leaks. It is designed to be serviceable, so you can maintain peak performance for the life of the vehicle. The kit is a complete bolt-on solution and is specified to operate without triggering any check engine light on the dashboard.

The kit is described as a Dump Recirculation Diverter Blow Off Valve for BMW 135/235 F20 and related models, including the NO noise version. It offers improved throttle response and more consistent turbo performance by providing a precise, controllable pressure relief path during shifts and light-load deceleration.

All electronic and mechanical equipment sold by InterCyprus to EU countries is CE certified and carries a two year warranty.

Benefits & Tips

• Experience quicker throttle response and more predictable boost behavior thanks to the fast piston opening and reduced vacuum space.
• Install as a straightforward bolt-on upgrade that remains engine-friendly, avoiding check engine light concerns while improving overall turbo stability.
• Keep performance consistent with a serviceable design—if a piston or O-ring wears, the valve can be serviced to extend its life rather than replaced.

Product specifications

• Material: aluminum
• Model Name: BOV1184
• Item Type: Valves & Parts
• Displacement/Application: For BMW 135/235 F20 N20 2.0 Turbo atmosphere
• Scope of supply: 1 x Diverter valve kits
• Smaller vacuum space than any other valve in the market
• Fast Piston Opening
• Better Throttle Response
• No Boost Leak
• Serviceable
• Specifications include CNC Billet Alloy and High Temp Viton O-rings
• External Testing Certification: ISO9000
• Origin: Mainland China
• Year/Compatibility Notes: This engine can be found in the F10, F20 and F30 chassis badged as 125i, 225i, 220i, 228i, 320i, 328i, 520i and 528i; 1 Series F20/F21 3/5 Dr Hatchback 2012 Onwards; 2 Series F22/F23 2Dr Coupe/Convertible 2014 Onwards; 3 Series F30/F31 Saloon/Estate 2011-2019; 5 Series 520i N20 528i N20

Package includes:

• 1 x Diverter valve kit

Warnings/Reminders

• Install as a bolt-on upgrade and note that it is designed to avoid triggering a check engine light. Follow standard installation practices for BMW turbo systems.

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