Alfa Romeo Spider 105/115 Heating and Ventilation Spare Parts

The heating and ventilation of the Alfa Romeo Spider 105/115 keeps the feet warm and the windscreen clear in the open roadster. On a convertible in particular a working system matters, because the soft top alone is not enough in cool or damp weather and fogged windows impair vision. Heating and ventilation thus contribute directly to driving comfort and road safety of the open vehicle. As a manufacturer, supplier and spare parts specialist for classic Alfa Romeo parts, we carry the heating and ventilation components for the entire production period of the Spider. Since the system differs between the early and the later years, the correct assignment to the series is decisive. Ordering by the model name alone easily leads to unsuitable parts, whereas stating series, year and control allows a reliable selection. The following overview shows how the product groups of heating and ventilation relate to the individual series.

Model and series reference

On the Spider the heating parts are offered in two main series. The first series covers the early years and uses, among other things, a metal heater valve with two hose stubs and a matching heater core. The second series from the early 1970s uses a plastic heater valve with a changed connection and a heater core tuned to it. As the round-tail of the first series, the fastback and the later years have different solutions, the range is organised clearly by series. Late injection models of the third series additionally have their own cooling water hoses to the heater valve, tuned to the changed engine periphery. Anyone who knows the series and year of their Spider and whether a metal or plastic valve is fitted can compile valve, heater core, hoses and control precisely and without wrong orders. As the two series differ not only in the valve but also in the matching heater core and in the routing of the hoses, these parts should always be regarded as a coherent unit and selected together.

Shared across the range or model dependent

Some components of the heater controls are shared by the Spider with GT Bertone and Giulia, such as certain knobs, bezels and the seal of the heater box. Here it matters whether the vehicle has a centre console, as the bezel and fixing depend on that. Heater core, heater box and the routing of the hoses follow the Spider's own structure on the open body. It would be wrong to assume that the complete system is the same between Spider, GT Bertone and Giulia. Commonalities exist with individual control parts and seals, but the installation and the series-dependent valves and hoses remain specific to the Spider. Anyone wishing to use parts from a coupé or saloon stock should therefore check carefully whether they suit the series and the control of the Spider, since small differences in connection and routing decide the function. Individual control parts and seals can indeed be used between the models, but valve, heater core and the routing of the hoses follow the series and the structure of the open Spider.

Part types and product groups

The range for heating and ventilation is divided into several groups. These include the heater box and its seal, the heater core, the heater valve in the first or second series version as well as the cooling water and heater hoses. Added to this are the heater controls with knobs and bezels, the vent hoses, the fresh air vents in the dashboard and the related seals and fixings. There are also small parts such as control levers and screws for the bezel, which are easily overlooked during a repair but are important for a clean function. The air vent cover and the hoses of the fresh air routing also belong to the ventilation and are to be chosen depending on the series, as are the control knobs in a black or chrome-plated version. These groups cover the path of the coolant via the heater core through to the ventilation in the interior and can be selected by series and year, so that a step-by-step repair of the system remains easy to plan and individual components can be renewed one after another. As the soft top of the open Spider offers less insulation than a closed roof, a reliable heating and an effective ventilation are particularly important.

Differences by year, series or version

The most important difference lies in the heater valve. The first series uses a metal valve with two hose stubs, the second series a plastic valve with a changed connection. The hoses and their routing as well as the matching heater core differ accordingly. The changeover concerned above all the connections and the routing of the hoses, so that parts of the two series do not readily fit one another. With the control parts it must be noted whether the heater controls are fitted with or without a centre console, as bezel and fixing depend on that. Late injection models have their own cooling water hoses to the valve. Anyone ordering parts should therefore state the series, the year and the question of the centre console so that valve, heater core, hoses and control match. Even with apparently similar parts a close look is worthwhile, because small differences in connection, shape and fixing decide whether a part fits without adaptation and the system is in the end tight and reliable. Anyone overhauling the heating should therefore choose the coherent parts of one series rather than mixing components of different versions.

Notes on selection

For a reliable selection it is advisable to determine the series and the year of the Spider before ordering and to check the existing heater valve, whether it is made of metal or plastic. A photo of the valve, the hose connections and the control eases the assignment and avoids queries. Seals for the heater box should be ordered at the same time when sealing, as they are needed in several places. With mixed stock from several sources a comparison with the series-correct version is worthwhile so that the result stays tight, the control matches and later rework is avoided. Anyone fully overhauling the system should plan valve, heater core, hoses and seals together from the start and select them to match the series. As a manufacturer and spare parts specialist we advise on the correct assignment and supply original parts as well as high-quality reproductions, so that even older systems can be fully restored. If there is uncertainty about the series, the valve type or the control, it makes sense to check briefly before ordering, so that the right parts are chosen from the start and unnecessary repeat orders are avoided.

Further sections

Model category:

Spider 105/115

Related guides:

Central 105 pages:

Frequently asked questions

How do I tell the first and second series heater valve apart?
The first series uses a metal valve with two hose stubs, the second series a plastic valve with a changed connection.

Does the centre console matter?
Yes. Bezel and fixing of the heater controls depend on whether the vehicle has a centre console.

Do the hoses of all years fit?
No. Hoses and their routing depend on the valve type and the series, and late injection models have their own cooling water hoses.

Is there a seal for the heater box?
Yes. The seal is offered to match and should be ordered at the same time when sealing, as it is needed in several places.

What details do I need for a reliable order?
Series, year, valve type and the question of the centre console, if needed supported by a photo of the valve and the connections.

Do you offer reproductions?
Yes. Alongside original parts we carry high-quality reproductions, such as valves, hoses, bezels and seals.

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