Dayco says it is “the quality choice” when it comes to engine cooling components

Dayco offers a wide range of engine cooling and related thermal management products.
The thermostat’s role in engine management is vital. A thermostat that has failed in the open position can cause car heaters not to work and if it fails in the closed position, it will surely cause engine overheating which can lead to costly repairs or at worst, complete engine failure.
Dayco says its thermostats are designed to OEM specifications and are manufactured with a heat sensing wax filled copper power pill that detects the coolant temperature in the engine. This pill controls coolant flow from the radiator when the engine is cold to reach optimum operating temperature quickly and then allows coolant to circulate throughout the engine when the operating temperature is reached to create the perfect temperature controlled engine environment.
Dayco will also be expanding its thermostat range soon to include most European makes and models in line with Australia’s car parc shift towards these vehicles.
Coolant expansion tanks
Dayco Coolant Expansion Tanks are manufactured to exacting OE specifications. These tanks are used to recover the coolant that escapes the cooling system past the pressure cap due to rising pressure and temperature. In a properly operating cooling system, the coolant will then be siphoned back into the radiator as the temperature drops. Tanks will often become discoloured, brittle, contaminated with sludge or they may even break, requiring immediate replacement for the cooling system to continue effective operation.

Heater tap control valves
The purpose of the Heater Control Valve is to regulate the flow of coolant to the heater core. In the off position the heater valve blocks coolant flow to the heater core when no heating is required. When heating is required the reverse takes place. The heater valve can be activated by vacuum control in late model vehicles and by cable in earlier models.
Common failures include leakage, blocking and because most late model valves are made of polymer, cracking when removing heater hoses is also very common. Dayco says it has released a vast, premium quality aftermarket range of heater tap control valves to cover local and imported makes and models.
Fan clutches
Dayco Fan Clutches are made from die-cast aluminium and have a machined body that helps to provide for a tight fit within close tolerances, while producing precision performance. Deep fins increase the surface area for improved heat dissipation, while exclusive drive spines are knurled and burnished. Dayco says the shaft surface resists slippage caused by heavy torque loads and assures longer bearing life.
Dayco says that premium quality bearings fitted to all Dayco fan clutches ensure longer life and quieter, smoother running. A special silicone fluid inhibits heat build-up to prolong service life and a bi-metal thermostatic spring adjusts the fan speed in response to operating temperature requirements, thereby reducing fuel consumption.

Moulded Hoses
Designed to replace original equipment manufacturer hoses, Dayco Moulded Radiator and Bypass Hoses are manufactured with knitted reinforcement and EPDM construction which provides high strength and resistance to oil, mud, salt, road debris, ozone, coolants, and temperature variations of -40˚C to 125C that are required for OEM hose replacements.
Each inner base tube is reinforced with knitted rayon for maximum strength and burst resistance for the life of the hose. The Dayco Moulded Radiator and Bypass Hose has a convenient plastic hang strap for quick and easy merchandising. In addition to meeting SAE J20R4, Class D-1 requirements, Dayco says this hose is now designed to meet Type EC electro- chemical requirements as specified in SAE J1684.
45° and 90° Universal Hose Bends – Water
Dayco Universal Hose bends for water are made from heat resistant EPDM and are not suitable for Fuel applications. They have a working temperate range of -40°C to 125°C.

For more information, contact your Dayco distributor or visit