Alfa Romeo 105 Cooling System Spare Parts for Classic Alfa Romeo Models

The cooling system of the Alfa Romeo 105 series keeps the Twin Cam engine at operating temperature and is used in the Giulia, Berlina, GT Bertone and Spider 105/115. It includes the radiator, water pump, thermostat, hoses, expansion tank, fan and temperature switch. As a manufacturer, supplier and spare parts specialist for classic Alfa Romeo models, Alfa-Service carries a wide range of cooling system parts. Many components are comparable across the series, while the radiator and hose routing can be model and model-year dependent.

Alfa Romeo 105 Cooling System at a Glance

The water pump moves the coolant through engine and radiator, the thermostat regulates the temperature, and hoses connect the components. The fan supports cooling, while the temperature switch and gauge monitor the condition. Later versions can have an expansion tank. The basic function is the same across the series, since the same base engine is used. The radiator, hose routing and fan design, however, can differ by model and model year.

Cooling System Part Types

The range is divided into the following part types:

Radiator and radiator accessories
Water pump
Thermostat and thermostat housing
Radiator hoses and connections
Expansion tank, where fitted
Fan, mechanical or electric on later versions
Temperature switch and sender

Shared Across the Series or Model-Dependent

The water pump and thermostat are often comparable across the series, since they are closely linked to the engine. The radiator and hose routing, by contrast, are model and model-year dependent, because the installation space and connections can differ between coupe, saloon and Spider. For the fan, the type should be noted: early versions use a mechanically driven fan, some later ones an electric fan. The expansion tank is not fitted on all model years. The Giulia, Berlina, GT Bertone and Spider 105/115 thus share many engine-near parts, while the radiator, hoses and fan are to be chosen by model and model year.

In practice it makes sense to separate engine-near and vehicle-side parts. The water pump, thermostat and associated seals depend on the engine variant, while the radiator, hose routing and fan are selected by model and model year. The temperature switch and sender must match the gauge and the respective connection. Comparing with the existing radiator and the hose connections on the vehicle prevents wrong purchases and ensures the parts match.

Notes on Part Selection

Decisive are the model, model year and engine as well as the fan design. The radiator and hose routing are to be chosen by model and model year, the water pump and thermostat by engine variant. For the fan, it should be checked whether a mechanical or electric version is present. Anyone who first establishes the model, model year and engine variant can put together the radiator, water pump, thermostat, hoses, fan and temperature switch reliably.

In the interplay, the cooling system keeps the Twin Cam engine within a narrow temperature range. The water pump moves the coolant through the engine and radiator, the thermostat opens the large cooling circuit at operating temperature. Hoses connect radiator, engine and, where fitted, the expansion tank, and the fan supports cooling at low road speed. The temperature switch and sender monitor the temperature and, on electric fans, control their switching on. Hoses, thermostat and seals are among the regularly renewed items. For assignment, a distinction should be made between engine-near and vehicle-side parts.

The water pump and thermostat depend on the engine variant and are often comparable across the series. The radiator, hose routing and fan, by contrast, depend on model and model year, because the installation space and connections can differ between coupe, saloon and Spider. For the fan, the type is decisive: early cars use a mechanically driven fan, some later ones an electric fan switched on via a temperature switch. The expansion tank is not fitted on all model years, which is why this point should be checked on the vehicle.

In practice it is advisable to view the cooling system as a circuit and to select the water pump, thermostat and seals by engine variant, the radiator, hoses and fan by model and model year. The temperature switch and sender are added to match the gauge and the fan control. Comparing with the existing radiator and the hose connections on the vehicle prevents wrong purchases. The Giulia, Berlina, GT Bertone and Spider 105/115 share the engine-near parts, while the radiator, hoses and fan are selected by model and model year.

As a manufacturer, supplier and spare parts specialist for classic Alfa Romeo models, Alfa-Service assigns the cooling system parts clearly by assembly and model family. The range covers the whole 105 series, so that the radiator, water pump, thermostat, hoses, expansion tank, fan and temperature switch for the Giulia, Berlina, GT Bertone and Spider 105/115 can be found reliably. Engine-near parts such as the water pump and thermostat can be determined via the engine variant, while the radiator, hoses and fan are narrowed down via model and model year. This classification makes selection easier, because the circuit can be divided into clearly defined areas.

Categories and Related Guides

The following areas help with classification and selection:

FAQ

Which parts does the 105-series cooling system include?

Radiator, water pump, thermostat, hoses, where applicable an expansion tank, fan and temperature switch.

Are cooling system parts usable across the series?

The water pump and thermostat are often comparable, while the radiator and hose routing are model and model-year dependent.

What should be observed with the fan?

The type: early versions use a mechanical fan, some later ones an electric fan.

Do all 105 models have an expansion tank?

No, the expansion tank is not fitted on all model years and should be checked on the vehicle.

Is Alfa-Service a workshop?

No. Alfa-Service is a manufacturer, supplier and spare parts specialist for classic Alfa Romeo models and does not carry out repairs.

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