Piston Ring Set 23040-2U900 (230402U900)

Restore factory compression and precise oil control with the genuine piston ring set (part 23040-2U900 / 230402U900). Engineered to Hyundai-Kia’s exact specifications, this ring pack seals the combustion chamber, regulates oil film, and prolongs engine life under all driving conditions.

Key Benefits

• Perfect OEM Fitment
  Manufactured to Hyundai-Kia CAD data for seamless installation in Gamma and GDi engine pistons.

• Premium Ductile Iron Construction
  Plasma-moly coated for enhanced wear resistance and heat dissipation.

• Standard Bore Diameter
  Ensures correct compression sealing without the need for oversize machining.

• Advanced Oil-Control Design
  Three-piece assembly minimizes oil consumption and prevents smoking.

• Durable Performance
  Withstands temperatures up to 300 °C and high combustion pressures.

Engine Compatibility

Fits turbocharged and naturally aspirated engines when specified by part 23040-2U900, including:

• Hyundai Kona 1.6 GDi (2018–2023)

• Hyundai Tucson 1.6 T-GDi (2018–2023)

• Kia Sportage 1.6 GDi (2016–2023)

• Hyundai i30 1.6 GDi (2017–2023)

• Kia Ceed 1.6 GDi (2018–2023)

Technical Specifications

• Part Number: 23040-2U900 / 230402U900

• Ring Set: Top compression ring, second compression ring, three-piece oil-control ring

• Material: Ductile iron with plasma-moly coating

• Size: Standard (STD) bore

• Ring Widths: 1.2 mm (top), 1.2 mm (second), 3-piece oil ring assembly

• Operating Temperature: –40 °C … +300 °C

• Warranty: 24 months factory coverage

Installation Overview

1. Disassemble engine and remove pistons from cylinders.

2. Extract old rings carefully with a ring expander tool.

3. Clean grooves and cylinder walls thoroughly.

4. Install new rings in the correct order and orientation, staggering end gaps.

5. Reassemble engine and verify factory compression and oil-pressure specs.