VRSF N55 Charge Pipe / Boost Pipe Kit for BMW E-Series 135i, 335i & X1 35i (E82 E88 E90 E91 E92 E93 E84) – 3" Black Aluminium Intercooler/Throttle Body Pipe, OEM C-Clip, 1/8 NPT WMI Ports, TiAL Q / HKS SSQV BOV Flange – Replaces OE 13717615026

High-Flow Boost Pipe Upgrade for BMW N55 E-Series 135i, 335i and X1 35i

Replace the brittle factory plastic pressure pipe and unlock sharper response with this premium aluminium hard pipe kit. Engineered for N55-powered E-chassis models, this 3 inch high-flow assembly delivers a stronger throttle body connection, quicker spool and a reliable seal under stock or tuned boost. Finished in stealth black powder coat, it looks OEM plus and fits like it should.

We run this hardware on our own cars and our customers consistently report excellent fitment, instant drivability improvements and long-term reliability. If you are chasing a dependable upgrade that eliminates common boost leaks while supporting future mods, this is the one to fit.

Key benefits

• Eliminates the weak factory plastic pipe that is known to crack or blow off under load
• Large 3 inch aluminium tubing for smoother airflow and reduced restriction
• CNC machined throttle body adapter with OE-style retaining clip for a secure, leak-resistant seal
• Pre-tapped 1/8 NPT ports with plugs included for WMI or meth injection now or later
• Choice of TiAL or HKS blow-off valve flange options, plus recirculation port blanking caps
• Durable black powder-coated finish for an OEM look and corrosion resistance
• Complete kit with high quality silicone couplers and clamps
• Backed by a lifetime warranty for total peace of mind

Compatibility

Designed for BMW N55 engine E-chassis applications:

• 1 Series E82 and E88 135i
• 3 Series E90 saloon, E91 touring, E92 coupe, E93 convertible 335i
• X1 E84 35i

Please ensure your vehicle is N55-equipped. This upgrade replaces the factory throttle body boost pipe on the above models with the N55 engine.

What you get

• Black powder-coated aluminium N55 boost/charge hard pipe
• CNC throttle body adapter with OE-style clip retention
• Two plugged 1/8 NPT ports for water-meth injection
• Blanking caps for recirculation ports
• Silicone couplers and premium clamps

Part reference

BMW OE reference: 13717615026

Replacement retaining clip and O-ring are available if your original hardware is missing or worn.

Why upgrade your N55 boost pipe

The stock plastic pipe is a known weak link on N55 cars, especially with remaps, uprated intercoolers or increased boost. This aluminium upgrade resists heat and pressure, reduces the chance of boost leaks, supports blow-off valve conversions and provides cleaner, higher-flow routing to the throttle body. Expect crisper throttle response, more consistent performance and a dependable seal under hard driving.

Fitting and support

Professional installation recommended. MJ Modifications offers expert fitting at our Warwickshire workshop. To request a fitting quote, email info@mjmodifications.co.uk.

Trusted by enthusiasts

Proven on our own builds and by happy customers, this N55 intercooler outlet pipe kit is a direct-fit, bolt-on upgrade that solves common boost issues and prepares your BMW for future power mods.

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