aFe Magnum FORCE Cold Air Intake System Spare Parts Kit (3/8in ID x 36in L)aFe Magnum FORCE Cold Air Intake System Spare Parts Kit (3 8in ID x 36in L) Direct aFe POWER Replacement: Designed to directly replace hoses provided with aFe POWER products, this hose is commonly used for coolant lines, in addition to a variety of other applications requiring a 3 8a*? internal diameter. For aFe POWER parts, refer to your cold air intakea**s instruction sheet to confirm the required hose size. Magnum FORCE Replacement Coolant Hose 3 8