Fiat 421R
The Fiat 421R is a tractor produced by Fiat. It is equipped with a 138.5 ci 2.3 L engine. The listed engine power is Diesel (listed): 40 hp / 29.8 kW. Transmission: 6 forward and 2 reverse. Operating weight: 3087 lbs 1400 kg.
Engine Power
Diesel (listed): 40 hp / 29.8 kW
Fuel & Capacities
Diesel
Transmission
6 forward and 2 reverse
Operating Weight
3087 lbs
1400 kg
Overview
 | 1958 - 1964
Orchard/Vineyard tractor |
|---|
Production | |
|---|---|
Manufacturer | Fiat |
Orchard/Vineyard tractor | |
Variants | |
|---|---|
411R | utility |
411RB | gasoline engine |
411T | tricycle |
411C | crawler |
421R | orchard |
431R | vineyard |
441R | four-wheel drive |
451C | mountain crawler |
481R | high-crop |
Fiat 421R Engine | |
|---|---|
FIAT 2.3L 4-cyl diesel | |
Engine details ...  |
Fiat 421R Transmission | |
|---|---|
6-speed gear | |
Transmission details ...  |
Fiat 421R Power | |
|---|---|
Engine | 40 hp
29.8 kW |
Mechanical | |
|---|---|
Two-wheel drive | |
Differential lock | mechanical rear |
Manual steering | |
Open operator station. | |
Power Take-off (PTO) | |
|---|---|
Rear PTO | live |
Clutch | mechanical dry disc |
Rear PTO Type | 540 |
Engine RPM | 540@2160 |
Dimensions & Tires | |
|---|---|
Wheelbase | 71.3 inches
181 cm |
Weight | 3087 lbs
1400 kg |
Front tire | 5.50-16 |
Rear tire | 11-28 |
Full dimensions and tires ...  | |
Electrical | |
|---|---|
Ground | negative |
Batteries | 2 |
Battery volts | 12 |
References | |
|---|---|
 | |
Use e manutenzionoe 411R 421R |
Engine
Engine Detail — 138.5 ci / 2.3 L Diesel
Manufacturer | FIAT |
Fuel Type | Diesel |
Configuration | 4-cylinder, liquid-cooled |
Displacement | 138.5 ci
2.3 L |
Bore/Stroke | 3.35x3.94 inches
85 x 100 mm |
Power | 40 hp
29.8 kW |
Compression | 21.5:1 |
Rated RPM | 2300 |
Firing order | 1-3-4-2 |
Starter volts | 24 |
Transmission
Transmission — 6 forward and 2 reverse gear
Type | gear |
Gears | 6 forward and 2 reverse |
 | |
Dimensions
Fiat 421R Tires | |
|---|---|
Ag front | 5.50-16 |
Ag rear | 11-28 |
Dimensions | |
|---|---|
Wheelbase | 71.3 inches
181 cm |
Length | 114.2 inches
290 cm |
Width | 59.1 inches*Minimum
150 cm |
Height | 53.2 inches
135 cm |
Weight | 3087 lbs
1400 kg |
Ground clearance | 15.8 inches
40 cm |
Front tread | 49.6 to 77.2 inches
125 to 196 cm |
Rear tread | 47.2 to 74.8 inches
119 to 189 cm |
Recommended Implements & Sizing Guide
Engineering recommendations for Fiat 421R based on its 40 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 2 to 3 Bottom (14-16")2 - 3 铧 (35-40 cm) | Medium Duty | Standard utility farm tillage. |
Rotary Cutter / MowerMowing & Clearing | 6 ft (72 in)1.8 m | Medium Duty | Medium pasture clearing; rear slip-clutch recommended. |
Rotary TillerSeedbed Prep | 66 to 72 in165 - 180 cm | Medium Duty | Standard utility tiller; slip clutch protection required. |
Disc HarrowSecondary Tillage | 7 to 8 ft Tandem Disc2.1 - 2.4 m 对开双排耙 | Medium Duty | Field leveling and clod breaking behind plows. |
Hay BalerHay & Forage | Small Square Baler (14x18")小方捆打捆机 (36x46 cm) | Medium Duty | Classic 2-string baler for horse and small livestock hay. |
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for Fiat 421R.
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
Fiat 421R Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for Fiat 421R.
Converted Equivalents:
Horsepower (HP)40 hp
Kilowatts (kW)29.8 kW
Metric Horsepower (PS / CV)40.6 PS
Direct Competitor Comparison
Compare Fiat 421R against same-era industry alternatives in the same horsepower class.
Current Model
Fiat
Fiat 421R
Engine Power:Diesel (listed): 40 hp / 29.8 kW
★ Baseline Reference
Related models
Fiat 315
- Power:
- 33
- Production years:
- 1965 - 1968
Fiat 35-66
- Power:
- 34.5
- Production years:
- 1990 - 1998
Fiat 355C
- Power:
- 34.5
- Production years:
- 1971 - 1975
Fiat 350
- Power:
- 35
- Production years:
- 1968 - 1974
Fiat 702B
- Power:
- 35
- Production years:
- 1924 - 1934