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The Gates PCV valve for 2002–2022 Nissan Altima with the 2.5L four‑cylinder is a replacement crankcase vent valve made for that long-running application. It manages crankcase ventilation by evacuating blow-by gases and maintaining proper internal pressure; installing a fresh valve restores intended ventilation function and helps keep engine breathing consistent across the specified Altima years.
Gates 02-22 Nissan Altima 4-Cyl. 2.5L PCV Valve Crankcase Vent Valves
