Engine: front mounted, offset to the car’s longitudinal axis 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
Capacity: 1089 cc (also 1400 cc through a strocke increase since 1949)
Max output: 90 bhp at 7000 rpm
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 double-choke carburetors
Ignition: coil and distributor
Clutch: single dry-plate
Gearbox: 4 forward speeds + reverse
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 (reaction rods, 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: single seater, built of aluminium (convertible as an option into a two-seater-roadster, fitted with motocycle-type mudguards for the International Sports category)
Dry weight: 450 kg
Production period: 1948-1951