The Genuine expansion tank hose is the GENUINE part, as sold new by the dealer.

Features and Benefits:

• Original Equipment Supplier
• Inner linings are resistant to electrochemical cracking
• High strength and resistance to oil, mud, salt, road debris, and ozone
• Resistance to distilled water and water ethylene glycol mixtures
• Resistance to air temperatures of up to 125C

  Part # 17-12-7-518-581 / 17 12 7 518 581