The steering of the Alfa Romeo 105 series is built the same way across the series and is used in the Giulia, Berlina, GT Bertone and Spider 105/115. It uses a worm-type steering box made by Burman or ZF - not a rack-and-pinion system. As a manufacturer, supplier and spare parts specialist for classic Alfa Romeo models, Alfa-Service carries a wide range of steering components. Many parts are comparable across the series, while individual versions differ by model year and steering side.
Alfa Romeo 105 Steering at a Glance
The steering effort is transmitted from the steering wheel via the steering column to the steering box. From there, a pitman arm acts via tie rods with a centre bar and tie rod ends, plus an opposing idler arm, on the wheels. This design is the same across the series, which is why many components fit across models. The steering boxes are available for both left-hand and right-hand drive.
Steering Part Types
The range is divided into the following part types:
- Steering box Burman or ZF
- Idler arm and pitman arm
- Tie rods, centre bar and tie rod ends
- Steering column and column parts
- Steering wheel and steering wheel hub
- Seals, bearings and small steering parts
Shared Across the Series or Model-Dependent
The steering is designed the same way across the series, but there are clear differences in detail. Two long sizes of the steering box existed; early cars have a different length from late ones. From around 1972 many cars received a shorter steering column combined with a dished steering wheel, which is why the column and wheel have to be distinguished by model year. In addition, the steering side (left or right) always has to be observed for the steering box. Tie rods, centre bar and ends, by contrast, are largely usable across the series.
Model Families
For a model-specific selection, the following categories lead to the model families:
Steering Box, Column and Model Variants
The steering box of the 105 series is a worm-type box made by Burman or ZF. Two long sizes existed: early cars used a longer version, while cars from around 1972 with a dished steering wheel and a shorter steering column received a slightly shorter box. The steering boxes are available for both left-hand and right-hand drive. When selecting, the steering side, size and model year should therefore be observed, as these points determine the fit.
On the opposite side, an idler arm (idler box) works. There are different versions here, for example older bearings and later versions with a roller bearing; caps and clamps also differ accordingly. The pitman arm transmits the movement to the tie rods with a centre bar and tie rod ends. These tie rod components are largely usable across the series, as are many small steering parts. The steering column and steering wheel, by contrast, depend on the model year, because the early long and the later shorter versions are not identical.
The steering components can be divided into clear part types: steering box (Burman or ZF), idler arm and pitman arm, tie rods with centre bar and ends, the steering column with its parts, the steering wheel and steering wheel hub, as well as seals, bearings and small parts. Some connecting parts are designed across the series; for example, the steering wheel nut fits all 105 models, and certain connecting elements are comparable with the earlier 750/101 models. An ordered selection by part type makes a reliable assignment easier.
As the Giulia, Berlina, GT Bertone and Spider 105/115 use the same steering design, many parts are comparable across the series. Where there are differences - above all at the steering box as well as at the column and wheel - the steering side, size and model year are decisive. Anyone who clarifies these points in advance and, in case of doubt, compares the existing steering box and column on the vehicle can assign the steering box, tie rods, column and wheel reliably.
Tie rods, centre bar and ends are among the frequently requested wear items and are largely usable across the series, while the steering box, column length and steering wheel are the vehicle-specific points that should be clarified in advance. Knowing the steering side and model year makes it possible to assemble the whole steering, from the box to the wheel, consistently and correctly for the vehicle.
Related Assemblies
The following areas are also relevant:
Notes on Part Selection
Decisive for the steering box are the steering side (left or right), the size and the model year. For the column and wheel, it should be checked whether the car has the earlier long or the later shorter version. Tie rods and ends are largely usable across the series. Checking against the specific vehicle is recommended.
FAQ
What steering do the 105 models have?
A worm-type steering box made by Burman or ZF, not a rack-and-pinion system. The design is the same across the series.
Are steering parts usable across the series?
Tie rods, centre bar and ends are largely comparable. The steering box and column depend on steering side and model year.
What changed from around 1972?
Many cars received a shorter steering column with a dished steering wheel, which is why the column and wheel are distinguished by model year.
Which components are available?
Among others, the steering box, idler arm, tie rods with centre bar and ends, steering column and steering wheel.
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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