
EZ-103 Oil Drain Valve – M12 × 1.25 | Select Kubota & Onan Diesel
M12 × 1.25 oil drain valve for selected Kubota diesel engines and Onan generators with compatible Kubota engines.
Cleaner oil changes with EZ-103
Replace the standard drain plug with a nickel-plated brass ball valve. Lift the locking lever and turn it a quarter turn to drain; return it to the closed position when finished.
Specifications
- Part number: EZ-103
- Drain-plug thread: M12 × 1.25
- Body size: Small
- Drain-hole inside diameter: 6.5 mm
Selected diesel applications
- Kubota D600, D750, D850, D950, D1105 and D1302 examples.
- Selected V1505 front-drain and V2203 bottom-drain applications.
- Onan generators with Kubota engines using an M12 × 1.25 drain plug.
Hose connection
H-001 straight or L-001 90° fitting; 3/8-inch inside-diameter hose. Fittings and hose sold separately.
Fitment and installation
A-103 adapter may be needed for a recessed drain port. Engine model and drain-port location matter; other Kubota engines use different valves. Match the original drain-plug thread, sealing surface and available clearance. Use the specified installation torque and check for leaks.
Application & adapter charts
View our EZ valve application and adapter size charts to compare engines, threads, hose ends and adapter requirements.

