Flywheel Holder Tool For 2500 3500 E-cowlboy Flywheel Lock Tool + 36mm Socket - For 6.6L Duramax Duramax Flywheel Lock Tool should slide into opening toward engine with the top of the tool engaging the teeth of the flywheel. Insert the tool at the front of the opening to engage the flywheel and hand tighten bolt to hold tool in place. Forged 36mm socket----- Remove harmonic balancer bolt and re-torque on installation Duramax 4500 / 5500 Trucks -- Use toothed pieces with screws remove the rubber inspection cap on the bottom of the transmission. The 36mm 3/4'' socket provides a precise fit for 6.6L Duramax engines, eliminating slippage and enhancing torque application, which guarantees efficiency and... International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. 36mm Metric 3/4 Drive Double Deep Impact Socket 6 Sided Single Hex Thick Walled 36mm 12 point socket can also be used on axle.