The Isuzu 4HK1XYGD-03 Tier 3 is a 5.19 L 4-cylinder water-cooled, direct injection, turbocharged, air to air intercooled engine rated at 1800 rpm, producing up to 206.76 kW. It powers generator sets from MQ Power, including the DCA125USI. It holds 23.4 L (6.2 gal) of oil and 19.7 L (5.2 gal) of coolant.
Service parts for the 4HK1XYGD-03 Tier 3
The cheapest captured merchant offer per filter — see the full cross-reference below for every OEM/aftermarket option.
Air intake
1 requiredP500248Air filterfind
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Maintenance schedule
| Item | Spec | Capacity | Part # | Interval | |
|---|
| Air filter | Replace when restriction indicator shows a vacuum of 625 mm (25 in. H20). | | WP10186 | | Amazon eBay $39.99 KuduParts $48.00 |
| Fuel filter | | | — | 500 hr | |
| Oil filter | | | 1134202322 | 100 hr | Amazon eBay $39.99 KuduParts $48.00 |
| Battery | always maintain battery fluid level between the specified marks. Add only distilled water when replenishment is necessary. DO NOT overfill. | | — | 250 hr | |
| Belt | Check for condition. | | — | | |
| Coolant | when adding coolant to the radiator, DO NOT remove the radiator cap until the unit has completely cooled. See Table 12 for engine, radiator, and recovery tank coolant capacities. | | — | | |
| Oil | fill the engine crankcase with lubricating oil through the filler hole, but DO NOT overfill. Make sure the generator is level and verify that the oil level is maintained between the two notches (Figure 28) on the dipstick. | | — | 100 hr | |
| Spark plug | Not specified in the document. | | — | | |
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 Isuzu 4HK1XYGD-03 Tier 3?
The Isuzu 4HK1XYGD-03 Tier 3 engine has an oil capacity of 23.4 liters.
What is the displacement of the Isuzu 4HK1XYGD-03 Tier 3?
The Isuzu 4HK1XYGD-03 Tier 3 has a displacement of 5.193 liters with 4 cylinders.
Which generators use the Isuzu 4HK1XYGD-03 Tier 3 engine?
The Isuzu 4HK1XYGD-03 Tier 3 powers 1 generator set(s), including MQ Power DCA125USI.
What oil filter does the Isuzu 4HK1XYGD-03 Tier 3 use?
The Isuzu 4HK1XYGD-03 Tier 3 uses oil filter part numbers Isuzu 1134202322, Donaldson P550596, Wix 57259.
What fuel filter does the Isuzu 4HK1XYGD-03 Tier 3 use?
The Isuzu 4HK1XYGD-03 Tier 3 uses fuel filter part numbers Isuzu 8981527372, Isuzu 8944838500, Donaldson P502424.
What air filter does the Isuzu 4HK1XYGD-03 Tier 3 use?
The Isuzu 4HK1XYGD-03 Tier 3 uses air filter part numbers Donaldson P500248, Wix WP10186.
How often should you change the oil in the Isuzu 4HK1XYGD-03 Tier 3?
The Isuzu 4HK1XYGD-03 Tier 3 oil change interval is every 100 hours.