Description
PAI 321249 is a Viton 75 O-ring (-115 series) used to seal the injector pass-through connector on Cummins N14 CELECT and CELECT Plus engines, replacing OEM Cummins 3928624 and 4984152. The clear Teflon coating eases installation and resists oil/coolant intrusion at the connector boss. Sold in packs of 10.
This O-ring is required when installing the PAI 050710 N14 Injector Pass-Through Connector. For complete injector wiring replacement, see the PAI 210065 N14 Injector Harness Kit.
Specifications
| Manufacturer | PAI Industries |
|---|---|
| Part Number | 321249 |
| Part Type | O-Ring (Injector Pass-Through Connector Seal) |
| Inner Diameter | 0.674 in (17.12 mm) |
| Cross Section | 0.103 in (2.62 mm) |
| Series | -115 |
| Material | Viton 75 with clear Teflon coating |
| Pack Quantity | 10 per pack |
| Primary Engine | Cummins N14 (CELECT / CELECT Plus) |
| Warranty | 2-year PAI factory warranty |
Cross References
This O-ring replaces or is equivalent to the following part numbers:
- Cummins: 3928624, 4984152
- Caterpillar: 6J2245, 7L2177, 8M4438, 8T7291
- Fuller: 20225
- Mack: 3088-20225
Applications
Primary application is sealing the injector pass-through connector on Cummins N14 engines (1991-2002):
- Cummins N14 CELECT (1991-1995)
- Cummins N14 CELECT Plus (1996-2002)
Representative trucks using these engines:
- Freightliner FLD112, FLD120, Century, Columbia
- Kenworth T600, T800, W900
- Peterbilt 378, 379, 385, 387
- International 9200, 9300, 9400, 9900
- Western Star 4900
This -115 series O-ring is also used in select Caterpillar engine, Fuller transmission, and Mack drivetrain applications. Verify your specific application before ordering.
Always replace the O-ring during connector installation to ensure a leak-free seal.
