13257V5001 Nissan ROCKER-VALVE, Price: 762.07$, Weight: 0.1kg

    • Make Number Name Availability Weight, kg Ship in, Days Price

    Nissan

    13257V5001

    ROCKER-VALVE

    		 5

    0.1

    2-3

    762.07$
     

    Compatibility

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    Engine Valve Rocker Arm Assembly ️

    This valve rocker arm is a key piece in the valvetrain that transfers motion from the cam/shaft-driven system to the engine valves. It is needed to open and close the intake and exhaust valves at the right time, keeping combustion efficient and the engine running smooth.

    How It Works ⚙️

    The rocker pivots on its shaft or stud, acting like a small lever. As the cam motion pushes through the valvetrain, the rocker presses the valve tip, overcoming spring pressure to open the valve. When the cam releases, the spring closes the valve and the rocker returns to its rest position.

    Why Replacing It Matters ✅

    A worn rocker arm can create extra clearance, poor valve lift, and unstable timing. That leads to ticking noise, loss of power, rough idle, and higher fuel use. Severe wear may damage the cam lobe, valve stem tip, or cause a dropped valve event in extreme cases.

    Symptoms of a Bad Rocker Arm

    • Loud tapping/clicking from the top of the engine
    • Misfire, weak acceleration, or uneven idle
    • Metal debris in oil, fast wear of cam/valve tips

    Compatibility

    • M30
    • Qx4