There's more to the Mishimoto design than strength as well

it supports sequential injection and direct spark for up to 8-cylinder or 4-rotor engines

and bottom-end stability in BMW S54 engines

2015+ BMW F80 and F82 M3/M4 models with DCT Trans

Genuine BMW S54 Head Bolt Set 11127831862 7372 There's more to the MishimotoThis BMW S54 head bolt set includes 14 genuine Torx cylinder head bolts designed specifically for the S54 3. 2L inline six engine found in the BMW E46 M3, BMW Z3 M Roadster (S54 equipped models), and BMW E85 Z4 M. This is a complete replacement set for securing the cylinder head to the engine block using factory spec torque to yield hardware. Why Replace S54 Head Bolts? BMW S54 head bolts are torque to yield (TTY), meaning they stretch when properly