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The Gates PCV valve for 1997–2003 BMW 540i with the 4.4L V8 functions as a replacement oil separator and crankcase vent component for those model years. Intended specifically for the 540i V8 application, it helps reestablish proper crankcase ventilation and oil‑vapor control, supporting maintenance needs where the original vent component has degraded.
Gates 97-03 BMW 540I V-8 4.4L PCV Valve Crankcase Vent Valves
