Silicone Intake Hose Kit for BMW F20 F30 F35 116i R56 N13

Restore consistent boost pressure and eliminate vacuum leaks with this direct-fit reinforced silicone intake hose, engineered as a permanent upgrade for the factory turbo inlet assembly on BMW 1 Series (F20/F21) and 3 Series (F30/F31/F35) models powered by the 1.6‑liter N13 turbocharged engine. The original plastic or rubber inlet tube frequently splits near the turbocharger flange under repeated thermal cycling, causing noticeable power loss and hesitation. This precision-molded replacement features a slightly expanded internal diameter to improve volumetric airflow while providing a secure, leak-free seal that handles sustained boost events and daily driving without deformation.

Benefits & Tips

• The flexible yet rigid multi-layer construction absorbs engine vibration without transferring structural stress to delicate turbocharger mounting points.
• Apply a thin layer of silicone lubricant or light soapy water during installation to prevent tearing the inner wall when sliding over the intake manifold stubs.
• Recheck clamp tightness after the first three heat cycles, as thermal expansion naturally seats the Nylon and Nomex reinforcement strands for a longer service life.

Product Specifications

• OEM Replacement Number: 13717597586
• Construction: High-grade silicone surrounding 3–4 mesh Polyester and Nomex layers
• Wall Thickness: 2 mm to 5 mm
• Operating Temperature: -60 °C to 260 °C
• Working Pressure: 0.3 to 0.9 MPa
• Burst Strength: 2 MPa
• Manufacturing Tolerance: ±0.5 mm

Package includes:

• 1 x Reinforced Silicone Turbo Inlet Hose Assembly

Warnings & Reminders

Verify your exact chassis code and engine designation before fitting, as routing angles differ between early F20/F21 and later F30/F31 platforms. Always replace worn OEM worm-gear or band clamps alongside the new hose to maintain a uniform vacuum seal and prevent boost creep. Avoid cutting or modifying the hose body, as even a 2 mm length variation can compromise clearance inside the engine bay.

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