CSF Racing Universal Single-Pass Oil Cooler M22x1.5 Connections 24x5.75x2.16"Universal Single Pass Oil Cooler RSR Porsche M22 x 1. 5 24L x 5. 75H x 2. 16W The CSF #8111 Universal Single Pass Oil Cooler was originally designed for direct fitment as a front mount center oil cooler for Porsche 911 930 models (up to 1989) (for IROC style or similar front bumper). However, due to its size and mounting capabilities CSF saw the potential for its use in a variety of custom applications. The OEM Porsche oil cooler is now more than 30