The AIRTEC intercooler for the M135i is designed to improve engine cooling and performance, especially during extended periods of hard driving. It replaces the standard, restrictive intercooler with a larger, freer-flowing core, helping to reduce intake temperatures and maintain consistent power.
The stepped intercooler design maximises airflow, while high-flow, one-piece AIRTEC cast end tanks provide improved air distribution and unbeatable strength. With a significant increase in both overall capacity and frontal area compared to the original intercooler, this upgrade ensures better efficiency under demanding conditions.
Designed and manufactured in the UK, the intercooler comes finished in Pro-Series black, includes the AIRTEC logo at no extra charge, and is backed by a 3-year unlimited mileage warranty. It’s a straightforward upgrade for anyone looking to improve engine response and reliability while maintaining a direct-fit installation.