Perfect for your stock or highly modified Duramax 6.6L diesel truck. Engineered for performance and durability, it features 4-ply heat-resistant internal fibers that provide strength against high pressures and temperatures. Silicone Coolant Hose Kits incorporate TIG welded, polished 304 stainless steel “T” fittings that eliminate any chance of failures at the “T” junctions. Durable 5 mm thick silicone is twice as thick as the factory hose to ensure long-lasting performance. The quick-connect/disconnect (LBZ, LMM, LML) end is made from billet aluminum and 304 stainless steel. Stainless steel clamps ensure a tight fit that performs better than factory.