MACE STEEL MAIN CAP GIRDLE TO SUIT FORD LTD DA DC DF DL AU MPFI INTECH VCT SOHC 12V 3.9L 4.0L I6

This main cap girdle is designed to reduce "capwalk", stop block web flexing and eliminate cracking of the main caps/block webs; this is achieved by boxing in the main caps. Our light weight girdle evenly distributes load and dampens harmonics by bolting the main cap studs together to create a super strong rectangular cage. The brace nearly doubles the main web support area in the engine. Securing the loose end of the main studs provides stability unequalled even by a 4-bolt mains set up.

In addition, due to the close proximity of the main stud girdle to the crankshaft and rods it also aids in stripping oil off of the crank, which in itself yields a net gain in HP.
Fabricated from 10mm thick high strength steel, these girdles are a must for high rpm/high horsepower applications where block rigidity is critical.

Contents:

• 1 X Steel main cap girdle

Vehicle Fitment Guide

Notes:

• This girdle does not fit AU type alloy sump without modification.
• Spacers from the OEM girdle must be re-used and modified to suit.
• Sump modifications may be required on some models.
• Custom length main studs are required. These can be purchased from any authorized ARP dealer.