06H105209AT VAG SPROCKET, Price: 133.81$, Weight: 0.526kg

Precision Timing Drive Sprocket for VAG Engines

This OEM-grade timing drive sprocket is a key part of the engine’s valve timing system. It is needed to keep the crankshaft and timing chain/belt working in perfect sync, so the pistons and valves move at the correct moment. When timing is accurate, the engine starts easier, runs smoother, and delivers proper power and fuel economy ⚙️

How This Sprocket Works

The sprocket mounts to the crankshaft and provides the toothed engagement surface for the timing chain/belt. As the crankshaft rotates, the teeth pull the chain/belt evenly, driving the camshaft(s). Correct tooth shape and hardened metal prevent skipping under load and keep timing marks stable, even at high RPM ?

Signs of Wear or Failure

If the sprocket is worn, cracked, or the teeth are hooked, the chain/belt can run noisy, stretch faster, or jump a tooth. This may trigger a check engine light, rough idle, misfires, poor acceleration, and hard starting. In severe cases, timing can slip far enough to cause internal engine damage on interference engines ❗

Why Replace It

Replacing a tired timing sprocket during timing service helps protect the chain/belt, guides, and tensioner, and restores reliable factory timing performance ✅