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G4KJ cylinder head assembly front view – Hyundai Kia 2.4L Theta II GDI
G4KJ cylinder head intake side with valves and camshafts installed
G4KJ cylinder head exhaust side – Hyundai Kia 2.4L GDI
G4KJ cylinder head combustion chamber detail – 2.4L Theta II
G4KJ engine code stamp close-up – OEM 22111-2G510

Hyundai G4KJ Complete Cylinder Head 22111-2G510

Brand new G4KJ cylinder head assembly with valves and camshafts pre-installed.

Precision-manufactured to OEM specifications for Hyundai and Kia vehicles powered by the 2.4L Theta II GDI petrol engine. Ready to bolt onto your engine block after transferring your external parts. Ideal for head replacement, engine repair or rebuild. 

  • Engine Code: G4KJ (2.4L Theta II GDI)
  • Displacement: 2.4 Litre (2359 cc)
  • Configuration: Inline 4-cylinder, DOHC 16-valve, Dual CVVT
  • Fuel Type: Petrol / Gasoline
  • Condition: New – Cylinder Head Assembly (Valves & Camshafts Pre-Installed)
  • OEM: Hyundai 22111-2G510 (cross-reference: 22100-2G550, 22100-2G551, 22100-2G560)
  • Warranty: 12 months
  • Compatible models: Hyundai Sonata (YF/LF), Santa Fe (DM/TM), Tucson (TL), Grandeur (HG/IG), Kia Optima (TF/JF), Sorento (XM/UM), Sportage (QL), Cadenza (VG/YG) (confirm via OEM number)
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Description

G4KJ Cylinder Head Assembly – Hyundai / Kia 2.4L Theta II GDI

G4KJ cylinder head assembly for Hyundai and Kia 2.4L Theta II GDI petrol engines. Brand new, with valves and camshafts pre-installed. Direct fit for Sonata, Santa Fe, Tucson, Grandeur, Optima, Sorento, Sportage and Cadenza. OEM 22111-2G510. 18-month warranty.

What’s Included

  • Complete cylinder head casting – precision-machined and pressure-tested
  • 16 valves – intake and exhaust, heat-resistant (4 per cylinder)
  • Valve springs, spring seats and retainers
  • Valve stem seals and valve guides (pre-installed)
  • Camshafts – intake and exhaust (DOHC)
  • Camshaft bearing caps and bolts (torqued to specification)
  • Core plugs and oil gallery plugs (installed)

Note: Valve cover, timing chain, fuel injectors, ignition coils, intake manifold and exhaust manifold are NOT included. Transfer these from your original engine.

Vehicle Compatibility

Fits the following Hyundai and Kia models equipped with the G4KJ engine:

  • Hyundai Sonata 6 (YF) – 2.4 GDI (2010 – 2015)
  • Hyundai Sonata 7 (LF) – 2.4 GDI (2014 – 2020)
  • Hyundai Santa Fe 3 (DM) – 2.4 GDI (2012 – 2018)
  • Hyundai Santa Fe 4 (TM) – 2.4 GDI (2018 – 2020)
  • Hyundai Tucson 3 (TL) – 2.4 GDI (2015 – 2021)
  • Hyundai Grandeur 5 (HG) – 2.4 GDI (2011 – 2016)
  • Hyundai Grandeur 6 (IG) – 2.4 GDI (2016 – 2019)
  • Kia Optima 3 (TF) – 2.4 GDI (2010 – 2015)
  • Kia Optima 4 (JF) – 2.4 GDI (2015 – 2020)
  • Kia Sorento 2 (XM) – 2.4 GDI (2012 – 2014)
  • Kia Sorento 3 (UM) – 2.4 GDI (2014 – 2020)
  • Kia Sportage 4 (QL) – 2.4 GDI (2015 – 2021)
  • Kia Cadenza 1 (VG) – 2.4 GDI (2011 – 2016)
  • Kia Cadenza 2 (YG) – 2.4 GDI (2016 – 2019)

Always verify your engine code and OEM part number before ordering.

OEM Part Number Cross-Reference

  • Hyundai: 22111-2G510
  • Related references: 22100-2G550, 22100-2G551, 22100-2G560, 221002G550, 221002G551, 221002G560

Why Buy This G4KJ Cylinder Head Assembly

  • 100% brand new – not reconditioned or repaired
  • Pressure-tested for leaks and cracks
  • Pre-installed valves and camshafts save hours of fitting time
  • 12-month warranty included
  • Packed in a reinforced crate for safe international freight
  • Fast global shipping to port or door.

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