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CSF high‑performance radiator for 2002–2007 Subaru WRX/STI includes a built‑in oil cooler and filler neck integrated into a 2‑row B‑Tube core design. Multi‑louvered fins and CSF’s tube technology increase heat transfer and flow efficiency for street or track applications. It’s a drop‑in fit with CNC‑machined brackets and OE‑style connections, providing combined engine and oil cooling in one factory‑style unit.
CSF 02-07 Subaru WRX/STI Radiator w/Built-In Oil Cooler/Filler Neck
