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Chase Bays oil cooler kit for 1999–2006 BMW 3-Series E46 designed for M5X and S5X engine configurations. The kit increases oil cooling capacity for sustained heavy use or modified engines, helping manage oil temperatures and protect engine components under higher thermal loads. It is intended for installations requiring improved oil temperature control over stock cooling.
Chase Bays 99-06 BMW 3-Series E46 (w/M5X/S5X) Oil Cooler Kit
