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The J&L oil separator for 2019–2025 Nissan Altima 2.5L (passenger side) is a billet-aluminum crankcase breather that captures oil vapors before they reach the intake. Its multistage stainless mesh and honeycomb filter separate fine oil particles into a removable 3 oz reservoir; drain every 2,000–3,000 miles. The knurled base and O-ring seal simplify servicing and help prevent leaks.
J&L 19-25 Nissan Altima 2.5L Oil Separator 3.0 Passenger Side - Black Anodized
