Service parts for the NL445D1
Grouped by system, with how many of each the parts manual calls for.
Air intake
1 requiredFuel system
1 requiredBelts
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Frequency | 60.0 Hz |
|---|---|
| Standby power | 36 kW |
| Prime power | 36 kW |
| Voltage options | 120 V, 240 V |
| Phase | Three phase standard |
| Power factor | 0.8 |
Maintenance & consumables
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Air Filter | 24-21406 | Amazon eBay | ||
| Fuel filter | Fuel Filter with Plastic Drain Valve (NL445 only) | 24-51004 | Amazon eBay | ||
| Oil filter | Replace oil filter at each oil change. | — | 250 hr | ||
| Battery | Check electrolyte level every 50 hours or once per month. Add distilled water to manufacturer's recommended level. | — | 50 hr | ||
| Belt | Drive Belt, NL445D1 (non-turbo) | R123463 | Amazon eBay FridayParts $52.84 | ||
| Coolant | Check coolant level and condition every day before starting engine. Add coolant as needed to maintain proper levels. | — | 1 hr | ||
| Oil | Change oil and filter every 120 hours or as needed. | — | 120 hr | ||
| Spark plug | Replace spark plugs every 120 hours or as needed. | — | 250 hr |
Common questions
What size generator is the Northern Lights NL445D1?
The Northern Lights NL445D1 is rated 36 kW standby.
What fuel filter fits the Northern Lights NL445D1?
The Northern Lights NL445D1 uses fuel filter part number 24-51004.
What air filter fits the Northern Lights NL445D1?
The Northern Lights NL445D1 uses air filter part number 24-21406.
Troubleshooting
6Symptoms & remedies
| Symptom | Cause | Remedy |
|---|---|---|
| Lack of Engine Power | Engine overload, Intake air restriction, Clogged primary fuel filter element, Clogged secondary fuel filter element, Improper type of fuel, Overheated engine, Below normal engine temperature, Improper valve clearance, Dirty or faulty injection nozzles, Injection pump out of time, Turbocharger malfunction | Reduce load, Service air cleaner, Clean or replace filter element, Replace secondary filter element, Consult supplier and use proper type of fuel for operating conditions, See “Engine Overheats” in next category, Remove and check thermostat, Reset valves (Best done by dealer), See your local dealer, Replace injectors (Best done by dealer), See your local dealer |
| Engine Runs Irregularly or Stalls Frequently | Below normal engine temperature, Clogged primary fuel filter element, Clogged secondary fuel filter element, Water or dirt in fuel system, Dirty or faulty injection nozzles, Air in fuel system, Improper type of fuel | Remove and check thermostat, Clean or replace filter element, Replace secondary filter element, Drain, flush, fill, and bleed system, Have your dealer check injection nozzles, Inspect clamps and hoses on suction side. of fuel pump for air leak, Consult fuel supplier and use proper type of fuel for operating conditions |
| Engine Overheats | Engine overloaded, Low coolant level, Cooling system needs flushing, Defective thermostat, Defective temperature gauge/sender | Reduce load, Fill tank or radiator to proper level, Check hoses for loose connections and leaks, Flush cooling system, Remove and check thermostat, Check water temperature with thermometer and replace gauge or sender if necessary |
| Engine Knocks | Insufficient oil, Injection pump out of time, Below normal engine temperature, Engine overheating | Check dipstick, Call your dealer, Call your dealer, Check your thermostat, Check water temperature to see if temperature gauge is working properly, See “Engine Overheating” section |
| High Fuel Consumption | Improper type of fuel, Clogged or dirty air cleaner, Engine overload, Improper valve clearance, Injection nozzles dirty, Injection pump out of time, Engine not at proper temperature, Defective turbocharger | Use correct fuel for temperature, Service air cleaner, Reduce load, See your local dealer, See your local dealer, Check your thermostats, Check water temperature with thermometer and replace gauge if necessary, See you local dealer |
| Low Oil Pressure | Low Oil Level, Improper type of oil, Partially plugged oil filter | Fill crankcase to proper level, Drain and fill crankcase with correct oil, Replace filter |
Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing. Full Northern Lights NL445D1 troubleshooting guide (10 entries) →
Parts
33| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 11-21011 | Gasket, Intake Port | 1 | Gasket | Amazon eBay |
| 16-09503 | O-ring | 1 | Seal | Amazon eBay |
| 24-21406 | Air Filter | 1 | Air filter | Amazon eBay |
| 24-51004 | Fuel Filter with Plastic Drain Valve (NL445 only) | 1 | Fuel filter | Amazon eBay |
| 26-59401 | 1500 RPM 12 Volt | 1 | Pump | Amazon |
| 26-59402 | 1500 RPM 24 Volt | 1 | Pump | Amazon |
| 40457250 | Turbo 4 | 1 | Turbocharger | Amazon eBay |
| 41-01013 | Hose, Polyvinyl 5/16" ID x 7/16" OD | 1 | Hose | Amazon eBay |
| 51M7040 | O-ring | 1 | Seal | Amazon eBay |
| 51M7041 | O-ring | 1 | Seal | Amazon eBay |
| 60687250 | Turbo 6 | 1 | Turbocharger | Amazon eBay |
| 716318 | O-ring | 1 | Seal | Amazon |
| R123226 | Gasket, Water By-pass Tube | 1 | Gasket | Amazon eBay FridayParts $17.80 |
| R123352 | Gasket, Oil Pan | 1 | Gasket | Amazon FridayParts $22.37 |
| R123463 | Drive Belt, NL445D1 (non-turbo) | 1 | Belt | Amazon eBay FridayParts $52.84 |
| R123542 | Gasket, Rocker Arm Cover | 1 | Gasket | Amazon eBay |
| R123575 | O-ring, Rocker Arm Cover Hold Down Stud | 1 | Seal | Amazon eBay |
| R128455 | Hose, Radiator Inlet | 1 | Hose | Amazon eBay FridayParts $89.99 |
| R128456 | Hose, Radiator Outlet | 1 | Hose | Amazon |
| R133893 | Gasket | 1 | Gasket | Amazon eBay FridayParts $17.56 |
| R135896 | Gasket, Thermostat Cover | 1 | Gasket | Amazon eBay |
| R502076 | O-ring (replaces R89944) | 1 | Seal | Amazon eBay $14.99 |
| R51936 | Tube Seal | 9 | Seal | Amazon eBay $29.99 FridayParts $17.68 |
| RE506131 | 1800 RPM 24 Volt (replaces RE67561) | 1 | Pump | Amazon |
| RE506132 | 1800 RPM 12 Volt (replaces RE67558 & RE505070) | 1 | Pump | Amazon |
| RE60062 | Fuel Injector (without turbocharger, includes keys 2-3) | 4 | Injector | Amazon eBay $139.40 SinoCMP $99.00 |
| RE64354 | Thermostat, 180°F/ 82°C | 1 | Thermostat | Amazon eBay FridayParts $41.59 |
| 20-00002 | SCA (Supplemental Coolant Additive) | 1 | Service part / kit | Amazon eBay |
| 20-00003 | SCA (Supplemental Coolant Additive) | 1 | Service part / kit | Amazon eBay |
| 20-00005 | SCA (Supplemental Coolant Additive) - 50 Pack | 50 | Service part / kit | Amazon eBay |
| 20-00010 | SCA (Supplemental Coolant Additive) | 50 | Service part / kit | Amazon eBay |
| 40450150 | Natural 4 | 1 | Service part / kit | Amazon eBay |
| NL445D1 | 36 | Service part / kit | Amazon |
Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.
Available documents
Operator's manual — O311 (Northern Lights)Parts manual — P445PT (Northern Lights)