Turbosmart Kompact Plumb Back Recirculating Blow Off Valve (BOV)/Diverter Valve Kit for BMW N54 135i, 335i, 535i & Z4 - TS-0203-1250

BMW N54 Turbo Recirculation Valve Upgrade - TS-0203-1250

Transform the way your N54 drives with this Turbosmart Kompact plumb-back recirc valve kit. It replaces the fragile factory plastic bypass units on the twin-turbo 3.0 and delivers faster spool, crisper throttle transitions and dependable, leak-free boost control while keeping noise subtle and OEM-like. Ideal for daily-driven builds and tuned cars looking for stronger sealing and smooth drivability without the whoosh of a vent-to-atmosphere setup.

We run this package on our own N54 projects and customer cars. Feedback is consistently positive: stronger midrange punch, steadier target boost and silky gear changes with none of the common boost leak headaches. Engineered by Turbosmart for direct fitment and long-term reliability, it’s a smart upgrade for any 135i, 335i, 535i or Z4 running the N54.

Key reasons to choose this N54 recirc valve kit

• Direct-fit replacement for the factory bypass valves on BMW N54 twin-turbo engines
• Improved boost response and sealing compared to stock valves
• Plumb-back design for quiet, OEM-style operation and excellent drivability
• Complete twin-valve kit with hoses, clamps and fittings for a straightforward install
• Port blanking plugs included
• Pre-installed pink springs rated -24 to -14 InHg

Kit contents

• 2 x Turbosmart Kompact plumb-back valves
• All required hoses, clamps and fittings
• Port blanking plugs
• Pink springs -24 to -14 InHg pre-fitted

Vehicle compatibility

For BMW models with the N54 3.0 twin-turbo engine:

• 1 Series E82 Coupe 135i 2008 to 2013
• 1 Series E82 1M Coupe 2010 to 2012
• 1 Series E88 Convertible 135i 2008 to 2013
• 3 Series E90 E91 E92 E93 335i 2007 to 2013
• 5 Series E60 Saloon 535i 2008 to 2009
• Z Series E89 Z4 35i 2009 to 2016

Note: Z4 models require the additional pipe kit TS-0203-2001.

Part number

TS-0203-1250

Installation and fitting

A simple bolt-on job using the supplied hardware. For professional fitting, contact MJ Modifications in Warwickshire for a quote at info@mjmodifications.co.uk.

Warranty

One year manufacturer warranty.

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