When upgrading your BMW E46 M3 with a CSL-style carbon fiber airbox, proper intake air temperature readings are critical. The Intake Air Temperature Sensor replaces the traditional MAF sensor and plugs directly into CSL carbon airboxes that use the OE BMW IAT sensor port, ensuring accurate data for your engine management system and reliable long-term performance.
Why You Need It
Upgrading to a CSL-style carbon airbox changes the intake system layout and controls; the factory MAF sensor can no longer function as required. Without the correct intake air temperature (IAT) sensor, your engine risks inaccurate readings that can lead to poor performance or potential damage. Produced by OE manufacturer Hella, this OEM part provides a direct solution by maintaining OEM-quality installation and measurements in a CSL setup.
Key Features
- Direct CSL Fitment – Designed to work with carbon fiber CSL airboxes (E46 M3 S54 applications).
- OEM Quality – Ensures accurate intake air temperature readings for proper ECU function.
- Simple Upgrade – A cost-effective but essential part for anyone running a CSL-style intake.
- Durable Construction – Built to withstand the heat and vibration of performance driving.
Benefits
- Keeps engine management accurate and reliable
- Prevents performance loss due to incorrect temperature signals
- Ensures a smooth install when fitting a CSL carbon intake
- Affordable and effective upgrade for CSL conversions
Specifications
- Application: BMW E46 M3 with CSL-style carbon fiber airbox (S54 engine)
- OEM Replacement: Compatible with CSL airbox setups where an IAT sensor is required
- Includes: Intake air temperature sensor with pre-installed o-ring
- Supercedes BMW Part# 13621739510
