BMW 1 / 3 / 5 Series & Z4 Dual-Cone Cold Air Intake System with Silicone Ducting | N54 Engine | Fits 135i, 135is, 335i, 335is, 535i, Z4

Free your N54 from the factory airbox restrictions with our Dual Cone Open Air Intake Kit, built to maximize airflow and boost efficiency on BMW’s legendary twin-turbo inline-six.

This kit replaces the OEM setup with dual high-flow cone filters, reinforced silicone hoses, and precision-machined metal fittings at the ends for the boost/vacuum reference lines. Unlike cheap plastic connectors, our metal fittings ensure a secure, leak-free seal — critical for maintaining consistent boost pressure and vacuum readings under high load.

The N54 engine is known for its tuning potential, but the restrictive factory intake limits how much air the turbos can breathe. By opening up the system, this kit provides:

1. Improved throttle response and reduced turbo lag
2. More horsepower and torque (especially under tuned setups)
3. Cooler intake temps thanks to unrestricted airflow
4. Aggressive induction sound with sharp turbo spool and blow-off acoustics
   

Beyond performance, the included silicone hoses resist heat and boost pressure far better than OEM rubber, ensuring reliability under high-boost applications. This makes it a must-have upgrade for both stock and tuned N54 builds.

Key Features

• Dual open-cone filters for maximum airflow
• Reinforced silicone hoses withstand heat & boost
• Metal vacuum/boost line fittings for a secure, leak-free seal
• Sharper throttle response & reduced turbo lag
• Supports higher boost levels with improved reliability
• Aggressive turbo spool, induction roar & blow-off sounds
• Direct OEM fitment, installs with basic hand tools

FITMENT: 

• 1 Series – E82 Coupe (2007–2013) – 135i, 135is (N54)
• 1 Series – E88 Convertible (2008–2013) – 135i (N54)
• 3 Series – E90 Sedan (2007–2011) – 335i (N54), 335is
• 3 Series – E91 Touring (2007–2011, EU) – 335i (N54)
• 3 Series – E92 Coupe (2007–2013) – 335i (N54), 335is
• 3 Series – E93 Convertible (2007–2013) – 335i (N54), 335is
• 5 Series – E60 Sedan (2008–2010) – 535i (N54)
• 5 Series – E61 Touring (2008–2010, EU) – 535i (N54)
• Z4 – E89 Roadster (2009–2016) – sDrive35i, 35is (N54)

DOES NOT FIT:

• Any N52, N53, or N55 engines
• Diesel or hybrid variants
• X-Series SUVs (X1, X3, X5, X6)
• M Models (M3, M5, Z4M, etc.)

Engine Compatibility: N54B30 twin-turbo inline-six

Please refer to the “Fitment” section in the product description for compatibility details.