Forge Replacement Atmospheric Valve for BMW N20 2.0 Turbo - Perfect for 125i, 225i, 220i, 228i, 320i, 328i, 520i, 528i
Upgrade your BMW N20 2.0 turbo with the Forge replacement atmospheric valve and get the performance, sound and reliability your car deserves. This blow off valve - also known as a dump valve, diverter valve or BOV - is designed for BMW N20 engines with the electronically controlled bypass valve, found in F10, F20 and F30 chassis models: 125i, 225i, 220i, 228i, 320i, 328i, 520i and 528i.
Ideal for remapped and tuned cars with increased boost, and a smart reliability upgrade for completely stock vehicles, especially in warmer climates. The OEM rubber diaphragm is known to split and leak, causing a loss of boost pressure and power without always triggering a check engine light. This Forge piston-based atmospheric dump valve has no diaphragm to fail, so you keep consistent boost, sharper response and that classic turbo whoosh.
Why choose this Forge atmospheric blow off valve for your BMW N20
- Piston design - no rubber diaphragm to split or leak
- All aluminium construction for strength and heat resistance
- Direct replacement for the factory electronic diverter valve
- Retains OEM ECU control of valve actuation for smooth drivability
- Helps prevent boost loss on tuned and stock cars
- Delivers the desirable atmospheric blow off sound
Proven performance and reliability
We have fitted and used this Forge atmospheric valve on multiple BMW N20 cars and our customers have been consistently impressed. Expect improved boost holding, crisper throttle response between shifts and dependable operation under hard use. It is a fully engineered solution that solves common OEM diverter valve failures while enhancing the driving experience.
Perfect for tuned and stock N20 engines
Whether your BMW 125i, 225i, 220i, 228i, 320i, 328i, 520i or 528i is stock, Stage 1 or Stage 2 with an ECU remap, this uprated dump valve keeps charge pressure under control and reduces the risk of boost leaks caused by the factory diaphragm valve. Great for spirited road driving and track use where heat and sustained boost expose OEM weaknesses.
Fitment
Fits BMW N20 2.0 turbo engines with electronic bypass valve in the following models:
- F20 F21 - 125i, 125i M Sport
- F22 F23 - 220i, 228i
- F30 F31 - 320i, 328i
- F10 - 520i, 528i
Note: This will not fit B38, B48 or B58 engines.
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Professional fitting available
Want it fitted by specialists? Nforcd offers professional installation in Warwickshire. Request a fitting quote at Sales@nforcd.com.
Order with confidence
Buy from Nforcd for fast delivery, expert advice and proven upgrades that work on BMW N20 2.0 turbo engines. This Forge atmospheric blow off valve is a direct, reliable and performance-focused replacement that keeps your boost in check and your turbo sounding great.