Fit:
for 2004-Newer LS1 LS3 5.3L 5.7L 6.0L engines
for Chevy LS1 LS6 L98 4.8L 5.3L 6.0L
Washers Included: Yes
Head Style: 12-point 
Quantity: As the picture shown
Warranty: 2 Year
Note:11mm bolts are 70ftlbs torque
8mm bolts are 25ftlbs torque
Feature:
-Direct replacement.
-Easy install and durable use.
-Great quality and great Fitment.
-Correct Connector No cutting or splicing.