Review on 🌡️ CSF 3515 Radiator: Reliable Cooling Performance for Optimal Engine Health by Bill Forbis

This review is for CSF part number 3515 and was on a 2005 Subaru Legacy GT with a 5 speed automatic transmission. The OEM block started leaking after 116.xxx miles and 15 years. Go with the CSF block as the brand should be a higher quality block. Has fittings, hose inlet and outlet and fan cover in all the right places. The only thing they got wrong was the farthest hose fitting on the passenger side that was supposed to connect to the coolant expansion tank (Subaru part number 21132AA121). The fitting on the CSF radiator is 3/8" OD while the OEM coolant hose is designed to connect to a fitting with a 1/2" OD /8" hose to connect everything. I have the heatsink not yet installed or pressure tested so will update as soon as I do Update: It has been 3 months since installation and the machine is working great even with the smaller tank inlet line 3 stars seems reasonable given the problems encountered during installation.