Service parts for the L9N
Grouped by system, with how many of each the parts manual calls for.
Fuel system
1 requiredOil system
1 requiredIgnition
1 requiredPrices captured from merchant listings; some links are affiliate links. Confirm against your serial number before ordering.
Specifications
Ratings spec sheet not in our library yet — see the documents below.
Filters & service parts
model family| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Fuel filter | 3607140 | 1000 hr | Amazon eBay $29.99 | ||
| Oil filter | CES 20092 | 3401544 | 1000 hr | Amazon eBay $257.95 FridayParts $125.00 | |
| Coolant | Standard coolant | 12.4 L | — | 2000 hr | |
| Oil | CK-4 API (CES 20086 / CES 20092) | 26.5 | — | 1500 hr | |
| Spark plug | 5473009 | 1500 hr | Amazon eBay $169.26 FridayParts $43.56 |
Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number.
Common questions
What oil filter does the Cummins/Onan L9N use?
The Cummins/Onan L9N uses oil filter part number 3401544.
What fuel filter does the Cummins/Onan L9N use?
The Cummins/Onan L9N uses fuel filter part number 3607140.
Parts
10model family| Part # | Description | Qty | System | |
|---|---|---|---|---|
| 3401544 | Oil filter | Oil filter | Amazon eBay $257.95 FridayParts $125.00 | |
| 3607140 | Fuel Filter | 1 | Fuel filter | Amazon eBay $29.99 |
| 5473009 | Spark plug kit | Spark plug | Amazon eBay $169.26 FridayParts $43.56 | |
| B6.7N-1000 | Engine Oil Filter | 1 | Oil filter | buy |
| ISX12N-3000 | Engine Oil Filter | 1 | Oil filter | Amazon eBay |
| L9N-2000 | Engine Oil Filter | 1 | Oil filter | Amazon eBay |
| LF9009 | Lube Filter | 1 | Oil filter | Amazon $47.99 eBay $110.91 FridayParts $125.00 |
| NG5900 | Fuel Filter (Fleetguard) | 1 | Fuel filter | Amazon eBay $190.00 |
| 5265337 | Ignition coil extension | Service part / kit | Amazon | |
| 5288839 | Crankcase filter | 1 | Service part / kit | Amazon eBay $449.99 |
Compiled from this model's family documentation — may include parts for closely-related variants. Confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.
Available documents
Engine spec — 0043305 (Cummins/Onan)Engine spec — 0061379 (Cummins/Onan)Operator's manual — 0061212 (Cummins/Onan)Reference — 0063969