The Perkins 1104D-E44TAG1 is a 4.41 L 4-cylinder turbocharged and charge air cooled engine rated at 1800 rpm, producing up to 88 kW. It powers generator sets from FG Wilson, Perkins and Terex, including the LL2014J, MJB 200 LA4 and 1104D-E44TAG1 ElectropaK. It holds 8 L (2.1 gal) of oil and 7 L (1.8 gal) of coolant.
Also known as: Perkins 1104D-E44TAG1
Part of the Perkins 1104D engine family — 16 variants share parts & fitment.
The cheapest captured merchant offer per filter — see the full cross-reference below for every OEM/aftermarket option.
Prices captured from merchant listings; some links are affiliate links. Verify against your serial number before ordering.
| Oil capacity | 8.0 L |
|---|---|
| Coolant capacity | 7.0 L |
| Displacement | 4.41 L |
| Cylinders | 4 |
| Aspiration | turbocharged and charge air cooled |
| Rated speed | 1800 rpm |
| Gross power | 88 kW |
Shared across brands: FG Wilson, Perkins, Terex
Compiled from service & troubleshooting documentation across every generator set that uses the Perkins 1104D-E44TAG1.
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | ||||
| Fuel filter | — | ||||
| Oil filter | 901103 | Amazon eBay $39.01 NAPA $18.35 KuduParts $25.00 | |||
| Battery | 12 volt starter motor | — | |||
| Belt | 22 inch belt-driven pusher fan and guards | — | |||
| Coolant | 17.0 litres | — | |||
| Coolant filter | Coolant pump | — | |||
| Oil | 21.3 l (US gal) | — | |||
| Spark plug | Glow plugs | — |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
| Part # | Description | Category |
|---|---|---|
| 125562 | Air Filter - Secondary | Air filter |
| LLB1114B | Leroy Somer | Alternator |
| LLB1114D | Leroy Somer | Alternator |
| LLB1114F | Leroy Somer | Alternator |
| LLB1114L | Leroy Somer | Alternator |
| LLB1114M | Leroy Somer | Alternator |
| LLB1514J | Leroy Somer | Alternator |
| LLB1514P | Leroy Somer | Alternator |
| LLB3114D | Leroy Somer | Alternator |
| LLB3114H | Leroy Somer | Alternator |
| 125552 | Belt | Belt |
| P532 | Fuel Injection Pump Solenoid Connector (2 Pin Connector) | Connector |
| P691/J691 | Electronic Unit Injectors for No. 1 and No. 2 Cylinders (4 Pin Connector) | Injector |
| P692/J692 | Electronic Unit Injectors for No. 3 and No. 4 Cylinders (4 Pin Connector) | Injector |
| 101-4000 | Gasket | Service part / kit |
| 127-0826 | Battery | Service part / kit |
| 134277 | T70, T90 & T120 Super Quiet Generator Maintenance Schedule | Service part / kit |
| 153-5720 | Battery | Service part / kit |
| 250-0486 | Oil Filter | Service part / kit |
| 250-0488 | Spark Plug | Service part / kit |
| 8C-3600 | Battery | Service part / kit |
| 8C-3601 | Battery | Service part / kit |
| 8C-3620 | Belt | Service part / kit |
| 8C-3627 | Fuel Filter | Service part / kit |
| P100 | Coolant Temperature Sensor (2 Pin Connector) | Sensor |
| P103 | Intake Manifold Temperature Sensor (2 Pin Connector) | Sensor |
| P200 | Intake Manifold Pressure Sensor (3 Pin Connector) | Sensor |
| P201 | Engine Oil Pressure Sensor (3 Pin Connector) | Sensor |
| P228 | Fuel Pressure Sensor (3 Pin Connector) | Sensor |
| P401 | Primary Speed/Timing Sensor (2 Pin Connector) | Sensor |
| P402 | Secondary Speed/Timing Sensor (2 Pin Connector) | Sensor |
| 4133L066 | PERKINS 1104D-E44T, 1104D-E44TA, 1106D-E66TA THERMOSTAT | Thermostat |
| P601 | Wastegate Valve (if equipped) (2 Pin Connector) | Wastegate valve |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
Cross-referenced via Donaldson + OEM/engine-maker interchange — options to verify against your serial number, not confirmed for every exact variant.
Other equipment known to use this engine, via filter-application cross-reference — useful for sourcing parts even when your exact machine isn't listed elsewhere on this page.
The Perkins 1104D-E44TAG1 engine has an oil capacity of 8.0 liters.
The Perkins 1104D-E44TAG1 has a displacement of 4.41 liters with 4 cylinders.
The Perkins 1104D-E44TAG1 powers 5 generator set(s), including FG Wilson LL2014J, FG Wilson MJB 200 LA4, Perkins 1104D-E44TAG1, Perkins 1104D-E44TAG1 ElectropaK, Terex T70.
The Perkins 1104D-E44TAG1 uses oil filter part numbers Fg Wilson 901103, Donaldson P554407, Wix 51459.
The Perkins 1104D-E44TAG1 uses air filter part numbers Fg Wilson 901048, Fg Wilson 901050, Perkins 26510343.
A commonly reported issue on generators using the Perkins 1104D-E44TAG1 is: Fluctuating generator output voltage. Cause: An “ON/OFF” type load may be the cause. Fix: Redistribute load if possible.