222262B437 Hyundai / KIA TAPPET, Price: 9.26$, Weight: 0.03kg

Engine Valve Tappet (Hydraulic Lash Adjuster) ?️

This small but critical engine part keeps the valve train working smoothly by holding correct valve clearance (lash). Modern Hyundai/Kia engines use this tappet to reduce ticking noise, improve idle stability, and protect camshaft and valves from shock loads.

Why this part is needed ✅

As the engine heats up, metal expands and clearances change. The tappet automatically compensates, so the cam lobe can open the valve at the right time and lift. That means better power delivery, cleaner combustion, and less wear inside the cylinder head.

How it works ⚙️

Engine oil pressure fills the tappet body and moves an internal plunger. This creates a self-adjusting “zero-lash” effect between the camshaft and valve. When oil pressure is correct, it stays firm under load but still adapts to small clearance changes.

What happens if it’s worn or broken ❗

• Sharp ticking/knocking noise from the top of the engine
• Rough idle, misfire feeling, or loss of response
• Faster camshaft and rocker wear due to metal-to-metal contact
• In severe cases: valve timing errors and costly cylinder head damage

Compatibility ?

• L300