4338402500 Hyundai / KIA RING-SYNCHRONIZER, Price: 9.86$, Weight: 0.4kg

Manual Gearbox Synchronizer Ring — OE 4338402500

Keep your Hyundai/Kia manual transmission shifting smooth with this precision synchronizer ring . It restores clean gear changes, protects gears from clash, and extends gearbox life. Ideal when you feel crunch on 2nd/3rd, hard engagement, or delay during quick shifts.

Why this part is needed

In a manual box, gears are always spinning. The synchro ring uses friction to match shaft and gear speeds before the dog teeth lock in ⚙️. When the ring wears, the cone grip drops and gears grind, especially under load or cold oil.

How it works

This brass/steel baulk ring sits against the gear cone. On shift, the hub sleeve pushes the ring, creating friction to synchronize speeds; once matched, keys allow the sleeve to engage the gear teeth. Correct clearances and sharp dog teeth give silent, quick shifts .

What happens if it’s worn or broken

Signs include grinding, notchiness, pop-out on overrun, metallic glitter in oil, and damaged dog teeth. Ignoring it risks chipped gears, bent shift forks, and a costly rebuild ❗. Always inspect the cone, hub/sleeve, springs, and replace oil.

Tech tips

Soak in clean gear oil before install, verify ring-to-cone gap, and torque selector hardware to spec. Best replaced in pairs on high-mileage boxes for balance ✅.

Compatibility

• HB20
• Reina
• Grand i10
• i10
• i20
• Atos
• Eon
• Venue
• Bayon