HBS061 HYUNDAI G4FK HEAD BOLT SET
Description
HBS061 Permaseal Head Bolt Set
Engine Compatibility: G4FK Hyundai 1495 I4 Petrol 1998-2000 G4EE Hyundai 1399 I4 Petrol 2005-on G4ED Hyundai 1599 I4 Petrol 2005-on G4EC Hyundai 1495 I4 Petrol 2003/04-2005 G4EC Hyundai 1495 I4 Petrol 2002-2003/04 G4ED Hyundai 1599 I4 Petrol 2002/08-2003/10 G4EC Hyundai 1495 I4 Petrol 2000-2003 G4ED Kia 1599 I4 Petrol 2005-on G4ED Hyundai 1599 I4 Petrol 2003/10-2006/03 G4ED Hyundai 1599 I4 Petrol 2005-on G4EE Kia 1399 I4 Petrol 2007-on G4ED Hyundai 1599 I4 Petrol 2001-on
Vehicle Compatibility: Hyundai Excel X3 1998-2000 Hyundai Getz TB BT51D 2005-on Hyundai Getz TB 2005-on Hyundai Getz 2003/04-2005 Hyundai Getz TB 2002-2003/04 Hyundai Accent LC 2002/08-2003/10 Hyundai Accent LC 2000-2003 Kia Rio JB 2005-on Hyundai Accent LS 2003/10-2006/03 Hyundai Accent MC 2005-on Kia Rio JB 2007-on Hyundai Matrix PM81C / PN81C 2001-on
These engines use Torque To Yield (TTY) head bolts in the cylinder head, also known as stretch bolts, angle torque, torque to turn, wasted or stretch bolts, which are only able to be fit once.
TTY head bolts are used on many engines to clamp the cylinder head to the block. They differ from ordinary head bolts in that TTY bolts are designed to stretch slightly when they are tightened down. TTY head bolts help to ensure even clamping forces across the head gasket to provide a better seal.
TTY head bolts require somewhat less torque when they are tightened than a conventional head bolt. This helps reduce distortion in the cylinder bores, meaning less blowby past the piston rings, lower emissions and better compression.