13021EE50D Nissan SPROCKET-CRANKSHAFT, Price: 17.34$, Weight: 0.231kg

Crankshaft Timing Sprocket for Nissan Engines

This precision timing sprocket sits on the crankshaft nose and is a key link between the crankshaft and the timing chain. It’s needed to keep valve timing accurate, so pistons and valves move in perfect sync. When this part is healthy, the engine starts easier, idles smoother, and delivers stable power ⚙️.

How It Works

The sprocket’s machined teeth grip the timing chain and transfer crankshaft rotation to the camshaft system. Its alignment marks help set correct timing during service. Hardened steel construction resists wear from constant load, oil splash, and heat cycles ?.

Signs of Wear or Failure

If the teeth wear, crack, or the fit becomes loose, the chain can ride incorrectly or jump timing. You may notice rattling at the front cover, poor acceleration, misfires, or a check engine light. In severe cases, timing can shift enough to cause piston-to-valve contact, leading to major engine damage ?.

Why Replace in Time

Replacing this sprocket during timing chain service helps protect the chain, guides, and tensioner, and restores reliable timing control for long engine life ✅.