243603CAB2 Hyundai / KIA OIL CONTROL VALVE EX, Price: 132.83$, Weight: 0.31kg

Exhaust-side VVT oil control solenoid for Hyundai, Kia, Genesis engines

Why this part is needed

This smart valve steers oil pressure to the exhaust cam phaser so your engine can change cam timing on the fly. It gives smoother idle, better pull, lower fuel use, and cleaner emissions. If you want factory power and response, this piece must work perfectly.

How it works

The ECU pulse-controls the solenoid, opening tiny oil passages that advance or retard the exhaust cam based on RPM, load, and temperature. A fine mesh screen keeps debris out of the phaser. With clean oil and a tight O‑ring seal, timing changes are quick and accurate ✅.

What happens if it’s bad

Stuck or slow valve = rough idle, flat spots, poor MPG, hard starts, and higher emissions. You may see the MIL and timing codes (e.g., cam correlation). Cold-start rattle, sulfur smell, or overheating cat can appear. Long neglect can wear the phaser and chain guides ⚠️.

Tech tips

Located on the cylinder head, exhaust side: one connector, a couple of bolts. Replace the O‑ring, use correct oil grade, clear codes, and perform an idle relearn. If reoccurs, check for sludge, wiring damage, or a clogged screen. Keep oil changes on schedule ⛽.

Compatibility

• Santa Fe
• Grand Santa Fe
• Maxcruz
• Palisade
• Genesis
• Genesis Coupe
• G70
• G80
• G90
• Equus
• Centennial
• Eq900
• Azera
• Grandeur
• Aslan
• Rohens