13717577471 Air Duct | Engineered Airflow Management for Thermal Efficiency

Engineered 13717577471 Air Duct utilizes rotational-molded thermoplastic elastomer construction with integrated airflow vanes. The dual-chamber design maintains 2.5m/s laminar flow velocity while preventing boundary layer separation. Pre-formed connection ports ensure ±0.5mm alignment with B-M platform intake manifolds.

Corrugated bellows structure allows 15mm axial movement compensation without flow restriction. Internal silicone coating reduces surface friction by 38% compared to standard designs. UV-resistant compound withstands underhood temperatures from -40°C to 160°C with zero plasticizer migration.

Material Composition

• • Base Material: TPE-S 70 Shore A
• • Reinforcement: Aramid fiber mesh
• • Temperature Range: -50°C to 165°C
• • Burst Pressure: 3.8 bar
• • Wall Thickness: 2.3±0.1mm

Direct replacement for: B-M Platform 2015-2023 F45/F46 Active Tourer
OE Cross Reference: 13 71 7 577 471 13.71.7.577.471 13717577471 7137577471