13322AA081 Subaru SPKT AY-CMS,INT LH, Price: 146.53$, Weight: 1kg

LH Intake Camshaft Sprocket (VVT Actuator) for Subaru 🔧

This left‑side intake cam phaser controls Subaru’s variable valve timing. It links the timing chain to the intake cam and hydraulically shifts cam angle for smooth idle, strong mid‑range, clean emissions, and quiet cold starts. Replacing a worn unit restores precise timing, prevents chain wear, and brings back factory power and economy ⛽️.

How it works

Inside the sprocket is a rotor and housing with oil‑fed vanes. The ECU commands the oil control valve to send pressure that advances or retards the cam. The toothed outer ring rides the chain; the inner hub keys to the cam. Proper oil flow and tight clearances keep timing accurate in every rpm range.

What happens if it’s bad

• Rattle on start‑up, harsh idle, or stalling
• Loss of torque, poor fuel economy
• Check Engine Light (VVT/cam correlation faults)
• Hard starting and increased emissions
• Risk of timing error that can harm valves ⚠️

Tech tips

• Align factory timing marks and torque to spec
• Pre‑oil the unit; use clean, correct‑grade engine oil
• Reset ECU adaptations and verify hot oil pressure

Compatibility

• Legacy
• Impreza
• Xv
• Forester
• Wrx/Levorg
• Brz
• Wrx