The CSF E36 M3/3-Series Euro Spec Oil Cooler is an engineered replacement for the discontinued OEM unit, delivering superior cooling performance and durability. Designed as a 1:1 fitment equivalent, it uses factory mounting points, hardware, and lines for EU M3 and Z3M models. For other E36 applications, optional bracket kits provide flexible installation with custom -10AN line setups.

CSF elevated the design beyond the original tube/fin construction by implementing a rugged bar/plate core that withstands track abuse while maintaining lightweight efficiency through their proprietary Aero-Flow bar design.


Key Features:
Unique dual-pass design maximizes surface area and oil flow
Fully TIG-welded extruded end tanks ensure superior reliability
Heavy-duty bar/plate core with turbulated multi-louvered fins
Six rows of maximum cooling capacity
OE style black finish accepts factory oil-line connections
Compatible with OE and CSF aluminum radiators
Drop-in installation for Euro-spec M3 and Z3M models

Includes:
CSF #8301 oil cooler unit
Hardware compatible with OEM mounting points
Support for OE or aftermarket installation options

Superior durability. Factory fit. Built to outlast the original.