New genuine Kubota WG2503 spark-ignited (gasoline, lpg and natural gas) engine, 4 cylinders, 56.8 to 61.7 HP. Kubota says the WG2503 keeps the same footprint as a V2403 diesel and offers performance similar to Kubota’s turbo diesels. It is fuel injected and comes in gasoline, LPG, natural gas and dual fuel (gasoline and LPG) versions.
Get a Quote
Kubota builds each engine to a spec for the machine it goes in. Call 530-668-0818 with your equipment make and model, or the model and serial number stamped on your old engine, and we will quote the right build. We are an authorized Kubota engine dealer.
Versions and specifications
| Version | Power (gross intermittent) | Fuel | Aspiration | Emissions | L x W x H | Weight | Aftertreatment |
|---|---|---|---|---|---|---|---|
| WG2503-E3 (gasoline) | 45.5 kW / 61 HP @ 2700 rpm | Gasoline | Naturally aspirated | EPA Tier 2 / CARB Tier 3 | 25.4 x 20 x 30 in | 430 lb (195 kg) | Three-way catalyst |
| WG2503-E3 (LPG) | 46 kW / 61.7 HP @ 2700 rpm | LPG | Naturally aspirated | EPA Tier 2 / CARB Tier 3 | 25.4 x 20 x 30 in | 432 lb (196 kg) | Three-way catalyst |
| WG2503-E3 (natural gas) | 42.4 kW / 56.8 HP @ 2700 rpm | Natural gas | Naturally aspirated | EPA Tier 2 / CARB Tier 3 | 25.4 x 20 x 30 in | 432 lb (196 kg) | Three-way catalyst |
Source: AIE Kubota Engine Series Lineup. Horsepower is gross intermittent as Kubota rates it. 4 cylinders, liquid cooled.
Kubota WG and DG Series
Kubota’s WG and DG Series spark-ignited engines are built for light towers, welders and generators, material handling, oil and gas, and aircraft ground support. Dual fuel options make most models flexible.
Replacing an engine
Kubota requires a replacement engine to meet the same emissions tier as the original, or a newer one. The engine model and serial number are stamped into the block. Kubota replacement engines are newly manufactured, never remanufactured.
Questions
How much horsepower does the Kubota WG2503 make?
Kubota rates it at 56.8 to 61.7 HP (gross intermittent), depending on the version.
How do I get the right WG2503?
Call 530-668-0818 with your engine model and serial number, or your machine make and model, and we will match the build.





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