LISLE LIS-72400 Manifold Drill Template for GM 6.6L Duramax Engine - Precision Tool The LISLE LIS-72400 Manifold Drill Template is specifically designed for GM 6.6L Duramax diesel engines, enabling technicians to remove broken exhaust manifold bolts without causing damage to the cylinder head. This tool ensures precise drilling and bolt extraction, saving time and preventing costly repairs. The LISLE LIS-72400 is a must-have for any shop working on Duramax engines, offering a reliable solution for a common problem.