Factory coolant hoses are prone to abrasions and cracking over time that could lead to cooling system failures, but this 01 - 05 Duramax 6.6L radiator pipe kit is the perfect way to ensure that your cooling system is reliable for years to come. This upper radiator pipe is constructed of abrasion - and crack - resistant 6061 aluminum, and its precision mandrel bend delivers a perfect factory fit. Avoid unexpected downtime and give your GM Duramax engine an extra level of protection with this stylish and high - quality radiator pipe., Not only does this 01 - 05 Duramax 6.6L radiator pipe kit provide added protection against costly damage and wear, it also helps improve the looks of the engine compartment with a powder coated and polished beautiful Sinister Blue finish for the radiator pipe, and even the silicone boots feature the Sinister Diesel logo. The extra - thick, four - ply silicone boots are not only heat - resistant, but they are also rated to 400psi for optimal durability. A must for any diesel truck, The 01 - 05 Duramax 6.6L radiator pipe kit includes the aluminum radiator pipe, two silicone boots and four stainless steel hose clamps., FeaturesAbrasion and Crack - Resistant 6061 Aluminum Alloy Piping., Precision Mandrel Bent Tubing for a Perfect Fit, 4 - Ply Silicone Boots that are rated to 400psi, Powder Coated and Polished in Sinister Blue for a beautiful finishIncludes(1) Aluminum Radiator Pipe, (2) Silicone Boots, (4) Stainless Steel Hose Clamps.