3-Ply Silicone construction resists up to 260 C/500 F, Coolant, Oil, Abrasion, and UV Rays. Smooth inner walls improve Coolant Flow and Cooling Efficiency. Prevents Leaks, Bulging, and Cracking in harsh off-road conditions. No Trimming or Modifications Needed. Bolt-On Installation with included Hardware. Ideal for replacing old, Worn Rubber Hoses, Restores Cooling System Reliability.