HKS Head Studs for G16E Toyota GR Corolla (22999-AT001)
Strengthened head stud bolts for the GR Corolla and GR Yaris with the G16E-GTS engine are now available, offering enhanced sealing performance when paired with the already-available Grommet Head Gasket, designed for engines with high combustion pressure.
Vehicle Fitment:
2023+ Toyota GR Corolla
(GZEA14 G16E-GTS 1.6L 3-Cylinder Turbo)
Benefits of HKS Head Studs:
⢠By using bottomed type stud bolts, the active threads on the block side are longer and the stress is dispersed, allowing for higher axial force to be endured.
⢠ARP' Custom Age 625 Plus material gives the highest tensile strength, excellent endurance cycle life and corrosion resistance.
Notes:
- Due to this item being in high demand, please call to confirm availability prior to purchase.




Description
Strengthened head stud bolts for the GR Corolla and GR Yaris with the G16E-GTS engine are now available, offering enhanced sealing performance when paired with the already-available Grommet Head Gasket, designed for engines with high combustion pressure.
Vehicle Fitment:
2023+ Toyota GR Corolla
(GZEA14 G16E-GTS 1.6L 3-Cylinder Turbo)
Benefits of HKS Head Studs:
⢠By using bottomed type stud bolts, the active threads on the block side are longer and the stress is dispersed, allowing for higher axial force to be endured.
⢠ARP' Custom Age 625 Plus material gives the highest tensile strength, excellent endurance cycle life and corrosion resistance.
Notes:
- Due to this item being in high demand, please call to confirm availability prior to purchase.























