Spark Plugs · Component
Spark Plug
for 2021 GMC Sierra 2500HD 6.6L V8 Duramax Diesel · 4WD
Units
Torque
15lb-ft
20 Nm
Notes
Gap before install
Other components in Spark Plugs
Air Box Clips
4 lb-ft · 5 Nm
Connector Bolts
7 lb-ft · 9 Nm
Engine Cover Clips
2 lb-ft · 3 Nm
Ignition Coil Bolt
6 lb-ft · 8 Nm
Ignition Coil Bolt
8 lb-ft · 11 Nm
Oil Drain Plug
26 lb-ft · 35 Nm
Spark Plugs - Aluminum Head
15 lb-ft · 20 Nm
Spark Plugs - Cast Iron Head
22 lb-ft · 30 Nm
Wheel Lug Nuts
140 lb-ft · 190 Nm