Mackay Radiator Upper Hose - Automatic & Manual

In conventional water-cooled engines, hoses are an integral part of the cooling system and in fact are a critical component in safeguarding the engine from excessive heat buildup causing premature and expensive engine failure.

The hose allows for the efficient transfer of coolant between the engine block and radiator. It also eliminates any vibration that may be otherwise transmitted by a rigid connection. In modern vehicles, a hose has to be designed to withstand the stresses of more powerful compact engines that run hotter and at a higher pressure. Other stresses include smaller engine compartments with poor heat dissipation, aggressive coolant additives, and stray (electrochemical) current that may be conducting through the cooling system.

In short, the smaller more powerful modern engine works a lot harder than the larger engines of the past. More heat is generated, higher demands are placed on cooling system components, and hoses have to be made tougher to withstand these demands.

Rubber compounds used in coolant hoses today are predominantly synthetic rubber formulation EPDM (ethylene propylene diene monomer).

Mackay EPDM offers:

• ECD resistant formulation
• Excellent resistance to high temperatures
• Resists chemical attack (oils, fuels etc.)
• Excellent Ozone resistance
• Good resistance to abrasion

Specifications

• Inside Diameter 1: 31 mm
• Inside Diameter 2: 31 mm
• Hose Length: 420 mm