The D4.5F.1 is a 4.5 L 4-cylinder turbocharged engine rated at 1500 rpm, producing up to 50 kW. It powers generator sets from Generac, including the SD050. It holds 10 L (2.6 gal) of oil and 15 L (4.0 gal) of coolant.
Maintenance schedule
| Item | Spec | Capacity | Part # | Interval | |
|---|
| Air filter | GEN-12348 | | — | 500 hr | |
| Fuel filter | GEN-12347 | | — | 500 hr | |
| Oil filter | GEN-12346 | | — | 250 hr | |
| Battery | GEN-12351 | | — | 2000 hr | |
| Belt | GEN-12350 | | — | 1000 hr | |
| Coolant | GEN-12349 | 15.0 L | — | 1000 hr | |
| Oil | 10W-30 | 10.0 L | — | 500 hr | |
| Spark plug | GEN-12352 | | — | 1000 hr | |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
Common questions
What is the oil capacity of the D4.5F.1?
The D4.5F.1 engine has an oil capacity of 10.0 liters.
What is the displacement of the D4.5F.1?
The D4.5F.1 has a displacement of 4.5 liters with 4 cylinders.
Which generators use the D4.5F.1 engine?
The D4.5F.1 powers 1 generator set(s), including Generac SD050.
How often should you change the oil in the D4.5F.1?
The D4.5F.1 oil change interval is every 500 hours.