14mm Duramax Gorilla Girdle Kit (LML)The thick Gorilla Girdle is the strongest girdle on the market.  It utilizes the XXL ARP 14mm main studs.

• This 14mm girdle only fits the LML Engines from 2011 - 2017.
• Core charge on the upper oil pan 250.00 Core charge is added to part price.
• We will credit the core charge back when we receive the old upper oil pan.