Forge Recirculation Valves for BMW N54 Twin Turbo 135i 335i 535i - Direct Replacement Diverter Valve Upgrade
Upgrade the weak OEM diaphragm diverter valves on your BMW N54 twin turbo engine with Forge Motorsport’s precision CNC machined recirculation valves. Designed specifically for the N54 as used in BMW 135i, 335i and 535i models, these piston-based DV units deliver reliable boost control, faster response and long-term durability without any permanent modification. Ideal for stock and tuned cars, this is the proven N54 DV upgrade for performance, reliability and consistent power delivery.
Built around Forge’s best-selling 007P piston architecture and re-engineered to suit BMW’s unique connection system, each valve body is CNC machined from T6-6061 billet aluminium on Mazak equipment for precise fit and finish. High temperature Viton O-rings ensure superior sealing and Mobil1 fully synthetic bearing grease provides smooth operation in extreme conditions. The valves are tuneable via interchangeable springs, maintaining full piston travel and flow volume while increasing boost holding capacity. This avoids the reduced vent flow seen on preload-only designs.
The included multi-layer, fabric-reinforced silicone hoses integrate seamlessly with the factory airbox and charge pipes. Even the clamps are premium, silicone-safe items with bevelled edges and a pressed-in drive mechanism, approved for demanding military use. Everything is engineered to withstand higher boost while keeping drivability refined thanks to true recirculation rather than vent-to-atmosphere. Expect crisp throttle lift-off, stable boost, and a dependable solution to common N54 diverter valve failures.
Why choose these Forge N54 recirculation valves
- Direct replacement diverter valves for BMW N54 twin turbo engines - plug-and-play fit
- Billet aluminium piston design for maximum reliability and response
- CNC machined T6-6061 construction for strength and precision
- Ultra high temperature Viton O-rings and Mobil1 synthetic lubrication
- Interchangeable springs to suit stock and tuned boost levels
- Maintains full piston travel and high vent flow at throttle lift
- Multi-layer silicone hoses compatible with factory airbox and charge piping
- High quality, silicone-safe hose clamps with bevelled edges
- Quiet OEM-style recirculation - the ideal blow off valve alternative for N54
- Proven upgrade for eliminating boost leaks and OEM DV failures
Fitment - BMW N54 twin turbo
- Engine: BMW N54 3.0 twin turbo petrol
- Models: BMW 135i, 335i, 535i with the N54 engine
- 1 Series chassis from title: E81, E82, E87, E88
We have fitted these on our own N54 builds and for many customers. Feedback has been excellent for boost stability, throttle response and long-term reliability on both standard and remapped cars.
In the box
- 2 x FMDVBM35 Valve - Left and Right
- 1 x 25 mm x 400 mm Mega Flex Silicone Hose
- 1 x 25 mm x 330 mm Mega Flex Silicone Hose
- 4 x 40 mm Hose Clamps
- 2 x Uprated Yellow Springs
- 1 x Forge Sticker
Part reference: FMDVBM35 valves included.
Installation and support
Direct replacement with no permanent modification required. If you would like professional fitting, choose Nforcd in Warwickshire. Request a fitting quote at Sales@nforcd.com and our team will be happy to help.
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