Engine: front mounted, based on Fiat 1100; cast-iron block, light alloy head; Stanguellini production since 1949 (cast-iron block, light alloy head)
Cylinders: 4
Bore and stroke: 68×75 mm (72,4×66,6 mm since 1956)
Capacity: 1089 cc (1097 cc since 1956)
Max output: 60 bhp at 6000 rpm (85 bhp at 7000 rpm since 1949; 96 bhp at 8000 rpm since 1956)
Lubrication: full pressure by submerged gear-type oil pump
Cooling: forced water circulation
Valve gear: pushrods; double chain-driven overhead camshaft since 1949)
Fuel feed: 2 Weber DR4 SP 32 carburetors (2 double-choke Weber 35 DCO and 40 DCO 28 carburetors since 1949)
Ignition: coil and distributor
Clutch: single dry-plate
Gearbox: 4 forward speeds + reverse (5 speeds + reverse since 1960)
Chassis: frame with side and cross tubular members
Front suspension: independent, lower A arms with upper transversal leaf spring, hydraulic telescopic shock absorbers (lower and upper arms, coil springs with coaxial telescopic shock absorbers since 1950)
Rear suspension: live axle with semi-elliptic springs and hydraulic shock absorbers (coil springs with coaxial telescopic shock absorbers since 1951)
Brakes: drums
Wheelbase: 2260 mm
Tracks: front 1210 mm; rear 1210 mm
Tire size: front 5.00-15; rear 5.20 -15
Body: two seater-roadster, built of aluminium; motocycle-type mudguards fitted since 1953
Dry weight: 550 kg
Production period: 1947-1957