Description
Genuine Cummins 4962608 OEM oil filler cap seals the valve cover oil-fill neck on Cummins B-series 3.9L and 5.9L, ISB 5.9/6.7L, ISC 8.3L, ISD, ISF, and QSB engines, replacing the superseded 3914136 / 3901895 / 3921644 part numbers. Molded from high-strength polymer with a captive seal, it is the factory-correct cap for both on-highway medium-duty trucks and Dodge Ram 2500/3500 Cummins applications.
Signs You Need a New Oil Filler Cap
- Cracked or damaged cap allowing debris into the engine
- Worn or missing O-ring seal causing oil leaks
- Cap no longer threads securely into the filler neck
- Oil residue or buildup around the filler opening
- Cap lost or missing during service
Specifications
| Manufacturer | Cummins |
|---|---|
| Part Number | 4962608 |
| Part Type | Engine Oil Filler Cap |
| Condition | New OEM |
| Material | High-Strength Polymer |
| Engine Compatibility | 4B, 6B, ISB, ISC, ISD, ISF, QSB |
Cross References
This oil filler cap replaces or is equivalent to the following part numbers:
- Cummins: 3914136, 3901895, 3921644
- PAI Industries: 141380
Applications
This oil filler cap fits the following Cummins engines:
- Cummins 4B / 4BT / 4BTA 3.9L
- Cummins 6B / 6BT / 6BTA 5.9L
- Cummins ISB 5.9L, 6.7L
- Cummins ISC 8.3L
- Cummins QSB 5.9L, 6.7L (off-highway)
- Cummins ISD, ISF series
Representative vehicles using these engines:
- Dodge Ram 2500/3500 (5.9L, 6.7L Cummins)
- Freightliner M2 Business Class, FL60, FL70, FL80
- Kenworth T170, T270, T370, T440, T470
- Peterbilt 325, 330, 335, 337, 348
- International DuraStar 4100, 4200, 4300, 4400
- Ford F-650, F-750 (Cummins-equipped)
- Sterling Acterra, L-Line
- Thomas Built / Blue Bird / IC Bus (Cummins-powered school bus)
Verify your engine serial number and valve-cover oil-fill neck before ordering to confirm fitment.
