Billet diverter-valve upgrade kit for the N54 twin-turbo. Replaces both leak-prone factory plastic valves with Turbosmart’s Boost-Balance Kompact valves – a known weak point on the N54 that costs boost and throttle response when they fail. Motorsport-proven sealing for built and stock-turbo N54s alike.
Compatibility
N54 Twin Turbo – BMW 135i (E82/E88), 335i (E90/E91/E92/E93), Z4 35i/35is (E89 – requires connecting pipe kit TS-0203-2001, sold separately).
Specifications
| Type | Dual Port kit (pair) |
| Construction | Billet aluminium, high-temp O-rings |
| Application | N54 twin-turbo – factory valve replacement |
| Z4 note | E89 requires connecting pipe kit (separate) |
| Part Number | TS-0203-1050 |
Notes
Professional installation recommended.Genuine Turbosmart product.
Why EuroSpec?
Genuine Turbosmart, sourced direct. We only stock parts we’d run ourselves.
Ships in 1–2 weeks. Product is made to order.



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