The Kubota KB19X coolant capacity is listed as 1.75 gal (6.6 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 KB19X Coolant Capacity
| Coolant capacity | 1.75 gal (6.6 L) |
|---|---|
| Cooling system capacity | 1.72 gal (6.5 L) |
| Coolant type | ethylene glycol-based coolant, Kubota Genuine Coolant, and ASTM D3306 compatible |
| Antifreeze mix | 50/50 coolant and water mix |
| Engine model | V3307-CR-TI-E5 |
| Engine horsepower | 18.8 hp (14 kW) |
| Engine displacement | 1 L (61 cu in) |
Coolant Capacity Comparison Chart
Coolant capacity comparison
Engine horsepower comparison
Engine displacement comparison
Kubota KB19X Coolant and Engine Notes
| Coolant capacity note | For the Kubota KB19X, 1.75 gal (6.6 L) is the main coolant capacity captured. Use it as a refill planning number, then confirm the final level at the machine |
|---|---|
| Coolant type note | Coolant type for the Kubota KB19X is listed as ethylene glycol-based coolant, Kubota Genuine Coolant, and ASTM D3306 compatible. The safest move is to use coolant that matches the manual’s spec rather than mixing random formulas |
| Antifreeze mix note | For the Kubota KB19X, 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 |
| Engine context note | Engine context for the Kubota KB19X: engine model V3307-CR-TI-E5, engine horsepower 18.8 hp (14 kW), and displacement 1 L (61 cu in). Engine size helps explain why coolant capacity changes between models |
| Refill note | When refilling the Kubota KB19X, use 1.75 gal (6.6 L) as the planning number and 50/50 coolant and water mix as the mixture guide. Recheck the level after the thermostat opens |
Kubota KB19X Coolant Capacity FAQ
How much coolant does the Kubota KB19X take?
The main coolant amount captured for the Kubota KB19X is 1.75 gal (6.6 L). Buy a little extra so you can top up after the engine warms up and cools down.
Does coolant type matter on the Kubota KB19X?
Yes. Capacity tells you how much to buy; coolant type tells you what to buy. For the Kubota KB19X, the captured coolant type is ethylene glycol-based coolant, Kubota Genuine Coolant, and ASTM D3306 compatible.
What antifreeze mix does the Kubota KB19X use?
The captured antifreeze mix for the Kubota KB19X is 50/50 coolant and water mix. A 50/50-style mix is the common practical answer unless your manual or climate calls for something different.
When should the Kubota KB19X coolant be replaced?
Use the service interval in the operator manual as the service guide. Coolant can look okay but still lose corrosion protection over time.
What engine specs affect Kubota KB19X coolant capacity?
The captured engine context is engine model V3307-CR-TI-E5, horsepower 18.8 hp (14 kW), and displacement 1 L (61 cu in). Engine size is one reason coolant capacity changes between tractors.
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.
