BMW E46 M3 CSL OEM Hella Intake Air Temp Sensor

This Genuine BMW OEM Intake Air Temperature Sensor; manufactured by Hella, BMW's OE supplier; is an essential component for any E46 M3 running a CSL-style carbon fiber airbox. When converting to a CSL airbox layout, the factory mass airflow sensor is no longer compatible; the system instead relies on a dedicated IAT sensor plugged into the OE sensor port on the carbon airbox. This part ensures the engine management system receives accurate intake air temperature data for correct fuel mapping and reliable operation.

Built to OEM specification by Hella, the sensor features a pre-installed O-ring for a leak-free seal and is designed to withstand the heat cycles and vibration demands of performance driving. It is a direct, no-modification fitment for any CSL-spec carbon airbox that retains the OE IAT sensor port; including OEM BMW CSL airboxes and compatible aftermarket equivalents.

Product Details

• OEM Hella intake air temperature sensor for BMW E46 M3 CSL airbox conversions
• Plugs directly into the OE IAT sensor port on CSL-style carbon fiber airboxes
• Includes pre-installed O-ring for a secure, leak-free installation
• Direct replacement for the IAT sensor; no modification required
• BMW Part Number: 13629899008

Vehicle Applications

• BMW M3 (E46)

Notes

• Genuine BMW OEM component
• Required when fitting a CSL-style carbon airbox that uses the OE BMW IAT sensor port in place of the factory MAF sensor
• Also compatible with Z3 M Roadster/Coupe (E36/7) and Z4 M (E85/E86) applications using a CSL-style airbox
• Supersedes earlier BMW part numbers; confirm fitment for your specific build before ordering