Engine Crank Gear for Reliable Timing ⚙️

This engine crank gear is a key part of the timing drive system. It sits on the crankshaft nose and transfers rotation to the timing chain, keeping crankshaft and camshaft movement synchronized. When timing is correct, the engine starts easier, runs smoother, and delivers proper power and fuel economy.

Why This Part Is Needed ✅

The crankshaft turns first—this gear is the “driver” that makes the timing chain move. Without a precise tooth shape and tight fit, the whole valve timing relationship can drift.

How It Works

As the crankshaft spins, the gear teeth engage the timing chain links. This rotation is passed up to the cam timing components so valves open and close at the right moment. A correct fit prevents wobble and reduces chain noise and wear.

What Happens If It Breaks or Wears ❌

Worn teeth or a damaged mounting surface can cause chain slack, rattling, or skipped timing. Symptoms may include rough idle, loss of power, misfires, hard starting, and engine warning lights. In severe cases, timing can jump and lead to major internal engine damage.

Compatible Models

• QX56