Hump Hose Tube Material Silicone, Hose Cover Material Silicone, 2-3/4", 3"

Silicone SAE J20 hump hose couplers for heater hose have a hump in the middle that allow them to bend slightly to accommodate minor misalignment when connecting a vehicle's heater hose to its heater core. The hump also allows the coupler to flex to accommodate vibration, preventing damage to the hose. Hump hose couplers are suitable for use in performance motors and vehicles, marine wet-exhaust systems, commercial truck and bus induction and cooling systems, agriculture and off-highway vehicles, and turbo-diesel vehicles. They are made from silicone, which provides excellent resistance to high temperatures, ozone, and UV rays. They also resist electrochemical degradation. These silicone heater hump hose couplers meet SAE (Society of Automotive Engineers) standard J20 for heater hose.

Heater hoses carry coolant between a vehicle's engine and its heater core in order to warm up the vehicle's interior. They are a part of the vehicle's cooling system that keeps the engine from overheating and malfunctioning. These hoses are made from materials that can withstand exposure to the chemicals and additives used in vehicle cooling systems. These small-diameter hoses are reinforced with nylon cords to strengthen the hose.