Economical Nickel Alloy Spark Plug 4049 BP5EY, Fits All Nissan Models Ignition System Replacement

When your vehicle experiences starting difficulties, idle shake, weak acceleration, or higher fuel consumption, it often indicates aged or failed spark plugs causing insufficient ignition. This economical nickel alloy spark plug converts high voltage to spark to ignite the air–fuel mixture, ensuring smooth idle and steady power. Fits Nissan entire line (post-2000) and some VW models; OEM 4049 BP5EY; thread M14x1.25, seat length 26.5 mm. Install with torque wrench to manufacturer torque; avoid over-tightening or under-tightening; ensure electrode gap matches OEM.