The Duramax engine suffers from main cap movement at high power levels. Even with ARP main studs and cross bolts, we have seen evidence in the bearing wear, of the cap flexing towards the front or the rear of the engine. The SoCal Diesel Billet Main Girdle is a solution that provides structure to the top of the main caps, linking all of the main caps together, as well as linking the main caps to the pan rail.
1 piece design for ultimate strength, rather than an inferior, cheaper to manufacture, 2 piece design.
1/2" thick across the main caps.
9mm thick at the pan rail to make sure the oil pan will not interfere with the steering linkage.
Includes longer oil pan bolts. (qty 20) 8mm x 45mm oil pan bolts, (qty 4) 8mm x 35mm oil pan bolts and (qty 2) 8mm x 35mm oil pump pickup bolts and washers)
***Requires a 1/2" longer main stud kit. Sold separately.