E9x M3 All Aluminum Triple Pass Radiator

This CSF Race radiator is a major step up over the stock radiator equipped on the E9X M3 from the factory. Unlike the single core one pass radiator equipped on a stock E9X M3 this radiator features a 2 row, 42mm dual core which not only increases system capacity but it also increases cooling efficiency by 20%.

The radiator core features an ultra-efficient fin with 6.5mm fin height and multi-louvered design for maximum surface area contact. The triple-pass flow structure allows the coolant to flow across the core of the radiator 3 times before exiting the radiator for lowest outlet temperatures possible.

CSF has also designed this radiator to be compatible with stock radiator hoses and has CNC machined “quick-connect” inlet/outlet connections along with CNC machined brackets and fittings for superb fit and durability. This allows for a direct fit installation requiring no modifications to install. Accepts all attaching OEM components including “quick-connect” hoses, AC condenser, mounting brackets, and fan shroud

The m3 style radiator is a drop in replacement in a 325/328i chassis. If you have a swapped 335i you would need to swap fans for fitment.