b'Bolt Together Radiators (BTR)American Cooling Solutions HD+ Bolt Together Radiators are engineered and built to out last and out perform any other bolt together radiators on the market today. every radiator is factory tested prior to being packaged in a custom engineered shipping box. mounting hardware component kits included in each box as required. all american cooling solutions hd+ bolt together radiators are covered by a 2 Year Limited Warranty!Zinc Coated Steel Header and Expansion Tanks for Extended Corrosion ProtectionGrade 8 Fasteners with Serrated Nut and Bolt Locking Mechanism ThatWelded Construction Wont Shake Loose and Powder-Coat Finish on Side Frame and TanksPremium Heavy DutyPacked in a Custom Engineered Break Down Shipping Box!Now featuring DIMPLED TUBES on our most popular models!ACS offers dimpled tube technology on many of our best selling BTR radiators as standard equipment, providing extra performance and value.www.americancoolingsolutions.com | 866-736-7335'