②[Ideal Solutions]: This valve cover set (aka: "rocker cover") is best professional solution for nissan QR25DE series's engine problem, and may help you resolve those problems: ① oil leaks ② engine bay smoking ③ burning oil smell ④ misfiring engine ⑤ warning lights on the dashboard !!!!
③[Perfect Sealing]: Common oil leakage location: 1.the cover bottom, 2. ignition coil hole. To solve those issue, this kit contains "valve cover gasket" and "spark plug seal". These accessories will free you from the annoyance of having a sticky/dirty oil covered on the surface
④[Package Content]: 1 x Engine Valve Cover Assembly (with PCV Valve & Oil Filler Cap & Spark Plug Sealing Ring), 1 x Valve Cover Gasket, A Set of Valve Cover Bolts (Bolt Torque Suggest: Step 1 - 1.96 N-m (0.20 Kg-m, 17 In-lb) & Step 2 - 8.33 N-m (0.85 Kg-m, 74 In-lb))