Service parts for the D50
Grouped by system, with how many of each the parts manual calls for.
Electrical
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
| Fuel | diesel |
|---|---|
| Frequency | 60.0 Hz |
| Standby power | 50 kW |
| Prime power | 45 kW |
| Emissions | EPA Tier 3 |
| Oil capacity | 9.4 L |
Engine
| Oil capacity | 9.4 L |
|---|---|
| Coolant capacity | 18.3 L |
| Displacement | 4.4 L |
| Aspiration | T, TA |
| Rated speed | 1800 rpm |
Filters for the Caterpillar C4.4
4Engine-mounted filters the filter manufacturers list for this engine family. These come from the engine, not from this generator set’s own parts list, so confirm against your serial number before ordering.
| System | Filter | Description | Cross-references | |
|---|---|---|---|---|
| Oil filter | P554407 | Lube Filter, Spin-On Full Flow | CATERPILLAR 2409393, CATERPILLAR 7W2326, NAPA 1459, BALDWIN BT237 | KuduParts $25.00 FridayParts $26.84 |
| Fuel filter | P550974 | Fuel Filter, In-Line | CATERPILLAR 2990378, CATERPILLAR 9R9925, NAPA 3270, BLAW KNOX 0016481600 | FridayParts $356.80 |
| Fuel filter | P502420 | Fuel Filter, Cartridge | CATERPILLAR 2526338, CATERPILLAR 4415111, NAPA 600488, CLAAS 0011377510 | buy |
Listed for this engine in only one kind of machine, so they may depend on how the engine was installed:
| System | Filter | Description | Cross-references | |
|---|---|---|---|---|
| Fuel / water separator | P551423 | Fuel Filter, Water Separator Spin-On | CATERPILLAR 1561200, NAPA 3531, NAPA 600091, NAPA 600092 | KuduParts $18.00 FridayParts $20.00 |
Maintenance & consumables
for the Caterpillar C4.4| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | Dry replaceable paper element type with restriction indicator | — | |||
| Fuel filter | Replaceable Element | — | 500 hr | ||
| Oil filter | Spin-On, Full Flow | — | 500 hr | ||
| Battery | CAT 230-6368 (12.5VDC) | 230-6368 | eBay $204.30 | ||
| Belt | Not specified | — | 3000 hr | ||
| Coolant | Standard ambient temperatures up to 50° C (122° F) | 17.1 L | — | ||
| Coolant filter | Radiator and cooling fan complete with protective guards | — | |||
| Oil | Replaceable Element | — | 500 hr | ||
| Spark plug | Not specified | — |
Common questions
How many kW is the Caterpillar D50?
The Caterpillar D50 is rated 50 kW standby.
What engine does the Caterpillar D50 use?
The Caterpillar D50 is powered by the Caterpillar C4.4 engine.
Is the Caterpillar D50 diesel or gas?
The Caterpillar D50 runs on diesel.
How much oil does the Caterpillar D50 take?
The Caterpillar C4.4 engine in the Caterpillar D50 has an oil capacity of 9.4 liters.
What is the coolant capacity of the Caterpillar D50?
The Caterpillar D50 cooling system holds 18.3 liters (4.8 US gallons) for the engine, per the manufacturer specification sheet.
What is the prime power rating of the Caterpillar D50?
The Caterpillar D50 is rated 45 kW prime, against 50 kW standby.
Parts
63| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 033-7854 | Filter fuel | 1 | Fuel filter | Amazon eBay $63.31 NAPA $19.86 |
| 093-7521 | Filter hydraulic | 1 | Hydraulic filter | eBay $29.99 NAPA $45.52 KuduParts $18.00 FridayParts $19.99 |
| 110-6326 | Air Primary | 1 | Air filter | Amazon eBay $40.00 NAPA $62.25 KuduParts $30.00 FridayParts $131.99 |
| 119-4740 | Hydraulic filter | 1 | Hydraulic filter | eBay $15.00 KuduParts $18.00 FridayParts $20.00 |
| 123-2367 | Air Primary | 1 | Air filter | Amazon eBay $89.77 NAPA $62.83 KuduParts $30.00 FridayParts $32.00 |
| 130-4678 | Air Primary Filter | 1 | Air filter | Amazon eBay $70.00 FridayParts $46.99 KuduParts $49.00 |
| 130-4679 | Air Secondary Filter | 1 | Air filter | Amazon eBay $35.00 |
| 160-7163 | Air Filter | 1 | Air filter | Amazon eBay |
| 1M7250 | Air filter housing | Air filter | eBay $19.48 KuduParts $18.00 FridayParts $19.90 | |
| 1R-1804 | Fuel/Water Separator | 2 | Fuel filter | Amazon eBay $10.99 eBay $19.49 KuduParts $18.00 FridayParts $19.99 |
| 1R1804 | Filter fuel | Fuel filter | Amazon eBay $10.99 eBay $19.49 KuduParts $18.00 FridayParts $19.99 | |
| 206-5234 | Air Primary Filter | 1 | Air filter | Amazon eBay $41.99 FridayParts $40.50 |
| 211-2660 | Air filter assy | Air filter | eBay $25.17 NAPA $42.90 | |
| 220-1523 | Engine Oil | 1 | Oil filter | Amazon Amazon eBay $21.56 eBay $21.56 NAPA $9.09 KuduParts $18.00 FridayParts $19.95 |
| 225-3150 | Starter motor | 1 | Starter | eBay $699.99 SinoCMP $289.00 |
| 230-8999 | Fuel injector | Injector | eBay $70.00 FridayParts $215.00 | |
| 232-6662 | Glow plug | Glow plug | eBay $55.99 | |
| 234-2988-RK | Turbocharger repair kit | Turbocharger | eBay | |
| 247-1380 | Air Filter | 1 | Air filter | Amazon eBay $33.95 NAPA $119.74 |
| 252-6338 | Filter water separator | 1 | Fuel filter | Amazon Amazon eBay $17.42 eBay |
| 254-2269 | Thermostat | Thermostat | eBay $55.26 | |
| 258-8538 | Fuel | 1 | Fuel filter | Amazon eBay $699.99 |
| 263-0544 | Air filter | 1 | Air filter | Amazon eBay |
| 270-7361 | Air filter | 1 | Air filter | Amazon eBay |
| 270-7362 | Air filter | 1 | Air filter | Amazon eBay |
| 270-7368 | Air filter | 1 | Air filter | Amazon eBay $85.00 |
| 276-1804 | Fuel | 1 | Fuel filter | Amazon eBay $49.99 KuduParts $12.00 |
| 276-1806 | Fuel Filter | 1 | Fuel filter | Amazon eBay $19.79 |
| 276166 | repair kit oil pump | Pump | Amazon eBay | |
| 287-6052 | Fuel | 2 | Fuel filter | Amazon eBay $29.99 KuduParts $114.00 FridayParts $118.95 |
| 288-4572 | Fuel | 1 | Fuel filter | Amazon eBay $395.00 |
| 299-8229 | Filter fuel | 1 | Fuel filter | Amazon eBay $26.42 KuduParts $21.00 FridayParts $23.35 |
| 299-9265 | Lift/transfer pump | Pump | eBay $75.09 FridayParts $75.02 | |
| 308-7298 | Filter water separator | 1 | Fuel filter | Amazon eBay $26.85 FridayParts $34.68 KuduParts $41.00 |
| 321-2411 | Air Primary Filter | 1 | Air filter | Amazon eBay $94.60 FridayParts $89.99 |
| 321-2413 | Air Filter | 1 | Air filter | Amazon eBay $295.00 |
| 339-7767 | Alternator | Alternator | eBay $147.25 FridayParts $157.50 | |
| 375-2606 | Twin Turbocharger Alignment Tool | Alignment tool | Amazon eBay | |
| 7W-2326 | Engine Oil | 1 | Oil filter | Amazon eBay $24.82 eBay $14.00 KuduParts $25.00 FridayParts $26.85 |
| 7W2326 | Filter oil | Oil filter | Amazon eBay $24.82 eBay $14.00 KuduParts $25.00 FridayParts $26.85 | |
| AEXQ3237-00 | Keyless push-to-start engine control | Keyless push-to-start engine control | Amazon eBay | |
| AN500T0010 | STARTER MOTOR | Starter | Amazon eBay | |
| AN500T0093 | ALTERNATOR | Alternator | Amazon eBay | |
| KM-BD-909002 | Hydraulic Track Adjuster Seal Kit | Seal | Amazon eBay | |
| KM-BD-909005 | Hydraulic Track Adjuster Seal Kit | Seal | Amazon eBay | |
| KM-BD-909006 | Hydraulic Track Adjuster Seal Kit | Seal | Amazon eBay | |
| KM-BD-909007 | Hydraulic Track Adjuster Seal Kit | Seal | Amazon eBay | |
| KM-BD-909016 | Hydraulic Track Adjuster Seal Kit | Seal | Amazon eBay | |
| 20382-3Zaz | Time delay relay No. 6 | 1 | Service part / kit | Amazon eBay |
| 2255441 | Connecting rod (Grade L) | Service part / kit | Amazon eBay $68.18 FridayParts $94.00 | |
| 2255453 | Connecting rod (Grade J) | Service part / kit | Amazon eBay $82.72 FridayParts $79.86 | |
| 2255454 | Connecting rod (Grade H) | Service part / kit | Amazon eBay $91.14 FridayParts $104.50 | |
| 230-6368 | Battery | 1 | Service part / kit | eBay $204.30 |
| 24aOeLa | Time delay relay No. 8 | 1 | Service part / kit | Amazon eBay |
| 32RELAYS | Relay No. 4 | 1 | Service part / kit | Amazon eBay |
| 3590719 | Special connecting rod (Grade R, beam length 6.5247-6.5260 inch) | Service part / kit | Amazon eBay $144.99 | |
| 3590720 | Special connecting rod (Grade O, beam length 6.5229-6.5242 inch) | Service part / kit | Amazon eBay $66.50 | |
| 3590721 | Special connecting rod (Grade W, beam length 6.5211-6.5224 inch) | Service part / kit | Amazon eBay $124.99 | |
| 3590722 | Special connecting rod (Grade G, beam length 6.5193-6.5206 inch) | Service part / kit | Amazon eBay $66.05 | |
| 3590723 | Special connecting rod (Grade P, beam length 6.5175-6.5188 inch) | Service part / kit | Amazon eBay $196.60 | |
| 3590724 | Special connecting rod (Grade B, beam length 6.5157-6.4961 inch) | Service part / kit | Amazon eBay $71.20 FridayParts $107.33 | |
| 877202-2 | Ignition kit | Service part / kit | Amazon eBay | |
| CHARGEPRO5i5 | GUEST battery charger | 1 | Service part / kit | eBay |
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
Reference — Interlink-LEXE0317-00 (Caterpillar)Parts manual — LEXE7582-02 (Caterpillar)
This page was generated from the 2 manufacturer documents above by automated extraction; every figure shown is copied from one of them. How the data is compiled.