Gasoline engines:
* 10 Nm (89 lb-in)
Diesel engines:
* 20 Nm (177 lb-in)
Tightening order:
1. Start with the center bolts and tighten them to the specified torque.
2. Then tighten the remaining bolts in a staggered manner, gradually increasing the tightening torque.
3. Check the tightening torque of all bolts again.