130255NA0C Nissan PULLEY ASSY VAL, Price: 341.66$, Weight: 1.038kg

Engine Valve Timing Pulley Assembly ⚙️

This pulley assembly is a key part of the valve timing drive system on modern Nissan/Infiniti engines. It is needed to keep the camshaft timing accurate, so the valves open and close exactly when the engine computer expects. Correct timing means smooth idle, strong acceleration, and lower fuel use ✅.

How it works

The pulley mounts on the camshaft and guides the timing chain/belt path. Its precision-machined teeth and alignment surfaces transfer rotation from the crankshaft to the camshaft, keeping everything synchronized. When timing stays steady, combustion is efficient and engine noise stays low.

What happens if it’s worn or broken

A damaged pulley can cause chain/belt misalignment, rattling, rough running, and loss of power. In severe cases it may let timing slip, which can trigger check engine lights, hard starting, and on interference engines even valve-to-piston contact—an expensive repair ?.

Common signs you need replacement

• Timing rattle on cold start
• Misfire or unstable idle
• Reduced performance and poor fuel economy
• Oil contamination around timing cover

Compatibility ?

• Infiniti QX50