The Kubota B7400 coolant capacity is listed as 1.68 gal (6.3 L). It also lists coolant type ethylene glycol-based coolant, Kubota Genuine Coolant, and ASTM D3306 compatible and antifreeze mix 50/50 coolant and water mix.
Kubota B7400 Coolant Capacity
| Coolant capacity | 1.64 gal (6.2 L) |
|---|---|
| Cooling system capacity | 1.68 gal (6.3 L) |
| Coolant type | ethylene glycol-based coolant, Kubota Genuine Coolant, and ASTM D3306 compatible |
| Antifreeze mix | 50/50 coolant and water mix |
| Coolant change interval | every 2 years |
| Engine horsepower | 16 hp (11.9 kW) |
| Engine displacement | 0.7 L (43.9 cu in) |
Coolant Capacity Comparison Chart
Coolant capacity comparison
Engine horsepower comparison
Engine displacement comparison
Kubota B7400 Coolant and Engine Notes
| Coolant capacity note | The Kubota B7400 coolant spec points to 1.68 gal (6.3 L). Do not rely on the radiator-only amount if the full cooling-system capacity is available |
|---|---|
| Coolant type note | For the Kubota B7400, coolant type matters as much as capacity. The clean captured value is ethylene glycol-based coolant, Kubota Genuine Coolant, and ASTM D3306 compatible |
| Antifreeze mix note | For the Kubota B7400, the captured mix is 50/50 coolant and water mix. Straight water is not the right long-term answer unless you are only flushing the system |
| Coolant change interval note | Coolant service for the Kubota B7400 is listed as every 2 years. If the service history is unknown, a fresh drain and refill is usually the cleaner move |
| Engine context note | Engine context for the Kubota B7400: engine horsepower 16 hp (11.9 kW) and displacement 0.7 L (43.9 cu in). Engine size helps explain why coolant capacity changes between models |
| Refill note | The practical service move for the Kubota B7400: buy enough coolant for 1.68 gal (6.3 L), fill to spec, run the engine, then recheck the radiator and overflow bottle after cooling |
Kubota B7400 Coolant Capacity FAQ
What is the Kubota B7400 coolant capacity?
The Kubota B7400 coolant capacity is listed as 1.68 gal (6.3 L) for cooling system capacity. Use this as the refill planning number and confirm the final level at the radiator or overflow bottle.
Can I use any coolant in the Kubota B7400?
No. Use ethylene glycol-based coolant, Kubota Genuine Coolant, and ASTM D3306 compatible or a coolant that clearly matches the manual’s required spec. Wrong coolant can create corrosion, deposits or seal problems.
Is premixed coolant okay for the Kubota B7400?
Premixed coolant can be fine if it matches ethylene glycol-based coolant, Kubota Genuine Coolant, and ASTM D3306 compatible and the required mix. The captured mix for the Kubota B7400 is 50/50 coolant and water mix.
How often should I change coolant in the Kubota B7400?
The captured coolant change interval for the Kubota B7400 is every 2 years. If service history is unknown, changing it is usually smarter than guessing.
Why does the Kubota B7400 coolant amount differ from other models?
Coolant capacity changes with engine and radiator setup. For the Kubota B7400, the supporting engine data is horsepower 16 hp (11.9 kW) and displacement 0.7 L (43.9 cu in).
Mistakes do happen. Tractor coolant specs can change by year, market, engine, radiator, cab/heater setup and service procedure. Please check the operator manual, decal information and official kubotausa.com website for official information before draining or refilling the cooling system.
