Hyundai ACCENT 00 (2003-2006) 2003-2006 G4KG Forged Complete Cylinder Head G4KG 2.4 Bare Engine Sportage 2.4L – OEM 21100-2BB20

Product Overview: Engineered for Hyundai Kia G4KG engines, this cylinder head assembly is a complete replacement unit built to original equipment tolerances. The assembly arrives complete with valves fitted and machined combustion chambers, making it a practical solution for a warped, cracked or valve-damaged original cylinder head.

Key Features: The head is machined on CNC centres for correct deck flatness, precise valve seat angles and matched combustion chamber volumes. Pre-installed, honed valve guides and cut seats produce even sealing and consistent compression on every cylinder. Every unit is pressure and vacuum tested before packing to confirm casting integrity and coolant passage sealing. Consistent production tolerances mean the part can be fitted without the trial-and-error often associated with low-grade replacements.

Vehicle Compatibility: This part is listed for Hyundai Kia, covering model families such as ACCENT 00 (2003-2006), ACCENT 00 (1999-2006), ELANTRA 00 (2000-2007), ACCENT 06: -DEC.2006 (2006-2007), ACCENT 00 (2001-2006) and E-COUNTY 04EM: -DEC.2009 (2004-2010). Fitment is documented for the 1995-2000, 2000-2006 and 1995-2001 model years. Because several production revisions share the same basic casting or forging, always confirm the engine code, casting marks and original reference number against the failed component before ordering.

Specifications: Key specifications: engine code G4KG; material Cast Iron or Aluminium; size Standard Size; condition New; warranty 12 Months. It is supplied for replacement and repair applications in standard specification.

OEM / Reference Numbers: OEM and cross-reference numbers covered by this listing are 21100-2BB20, 21100-2BB21 and 22100-22021.

Applications: Typical applications include head gasket failure repairs, valve damage repairs, engine rebuilds and fleet maintenance on vehicles with cracked or distorted cylinder heads. It also suits preventative maintenance programmes where a failed unit is replaced before secondary damage occurs.

Benefits / Replacement Information: Installing a new head assembly restores lost compression, corrects coolant loss and combustion leakage caused by cracking or distortion, and returns the engine to reliable service. Because the unit is supplied fully assembled and pre-machined, it removes the labour and risk involved in reconditioning a warped or cracked original head. The repair stays within original equipment specification, which is important for vehicles that remain in daily commercial service.

Installation or Fitment Notes: Before fitting, confirm the engine code and reference number and inspect the block deck for flatness and the head bolt threads for damage. Fit a new gasket and, where required, new torque-to-yield bolts, ensuring the bolt holes are clean and free of fluid. Cleanliness during assembly is critical; keep machined surfaces free of swarf, grit and moisture at all times.