The standard 4 series intercooler is quite small and prone to heatsoak on hot days or with repeated high performance use, leading to reduced power output. Our larger, bar-and-plate construction intercooler is more efficient resulting in lower inlet temperatures and more sustained power in the most demanding conditions.
Fits 420i, 428i, 435i, 420d, 425d, 430d and 435d including x-drive.