2-Piece 51mm Silicone Turbo Inlet Hose Kit REDOX for BMW N54B30 - 135i 1M 335i 535i Z4

REDOX Silicone Turbo Inlet Hoses for BMW N54B30

This complete 2-piece high-performance silicone turbo inlet hose kit replaces the factory plastic hoses on your BMW equipped with the N54B30 twin-turbo 3.0L engine. Original plastic hoses become brittle over time due to repeated thermal cycles, causing cracks, air leaks and performance losses. Our VMQ silicone solution permanently eliminates these issues.

Compatible BMW N54B30 Applications

This kit fits perfectly on the following BMW models equipped with the N54B30 twin-turbo 3.0 liter engine:

1 Series (E82/E88): BMW 135i (2008-2012), BMW 135is (2011-2012), BMW 1M Coupe (2011)

3 Series (E90/E91/E92/E93): BMW 335i and 335xi (2007-2010), BMW 335is (2011-2012)

5 Series (E60/E61): BMW 535i and 535xi (2007-2010)

Z4 Roadster (E89): BMW Z4 sDrive35i (2009-2016), BMW Z4 sDrive35is (2011-2016)

The N54B30 engine produces between 306 and 340 horsepower depending on version, with twin Mitsubishi TD03 turbochargers operating in parallel.

Technical Kit Specifications

Diameter: 51mm (2 inches) - optimal diameter for stock or upgraded turbos

Material: Multi-layer VMQ silicone selected from 5 REDOX grades

Construction: 4-ply reinforced, 5mm thickness with textile reinforcement and steel wire

Temperature range: -50°C to +180°C continuous operation

Pressure resistance: Supports up to 3 bar boost pressure

Available colors: Blue, red or black to choose

Clamps included: High-quality stainless steel hose clamps supplied

Installation: Plug & play mounting as direct replacement for factory hoses

Performance and Reliability Benefits

Upgrading to 51mm diameter eliminates the restriction of the factory 44mm plastic hoses. This improved airflow to the turbochargers enables measured power gains up to 15-20 horsepower on tuned engines. VMQ silicone never hardens or cracks, unlike factory plastic which becomes brittle after 5 to 7 years.

REDOX hoses support engine tuning up to 450 horsepower with optimized stock turbos, and up to 700 horsepower with hybrid turbos. Their 4-ply construction with steel reinforcement prevents any collapse under high vacuum at elevated RPM.

Permanent Stock and Express Delivery

Permanent stock: This kit is available in stock in our French warehouse in Les Ulis (91)

Same-day dispatch: Any order placed before 5 PM is shipped same day

Fast delivery: GLS delivery in 24-48h throughout France and Europe

Reinforced packaging: Optimal protection during transport

Lifetime warranty: REDOX silicone hoses are guaranteed for life against manufacturing defects

Frequently Asked Questions (FAQ)

Can I install this kit myself? Yes, installation is accessible to a DIY mechanic with basic tools. Allow 45 minutes to 1 hour for complete replacement of both hoses. No coolant system drainage required. Stainless steel clamps are included for leak-free installation.

Are these hoses suitable for my tuned N54 engine? Absolutely. The 4-ply VMQ silicone supports Stage 1 to Stage 3 tuning, hybrid turbos, and even single turbo configurations up to 650 horsepower. The reinforced construction resists high boost pressures without deforming.

What's the difference between 51mm and factory 44mm hoses? The 51mm (2 inch) diameter offers 35% more intake area compared to factory 44mm. This increase reduces airflow restrictions, improves cylinder filling and allows turbochargers to operate more efficiently. On tuned engines, gains are measurable on the dyno.

Do REDOX hoses withstand temperatures in the N54 engine bay? Yes, VMQ silicone resists -50°C to +180°C continuously. In the N54 engine bay, temperatures regularly reach 120-140°C. VMQ silicone remains flexible and sealed even after years of intensive use, unlike factory plastic which hardens and cracks.

Can I keep my stock turbos with this kit? Yes, this kit works perfectly with stock Mitsubishi TD03 turbochargers. The 51mm diameter attaches directly to the turbo inlet with the supplied clamps. If you plan to install hybrid turbos or TD04s, this kit is also compatible.

What's the real lifespan of REDOX silicone hoses? Minimum lifespan is 15 years under normal use, versus 5 to 7 years for factory plastic hoses. VMQ silicone doesn't degrade from UV, ozone or hydrocarbons. REDOX customers since 2010 still use their first hoses without any issues.

Are hose clamps included in the kit? Yes, the kit includes 4 high-quality non-perforated stainless steel hose clamps, specifically sized for 51mm hoses. These clamps guarantee uniform clamping without damaging the silicone.

Is this kit compatible with my existing modifications? Yes, this kit is compatible with performance intakes, piggyback ECUs, upgraded intercoolers, downpipes and all common N54 tuning configurations. Installation is plug & play in factory location.