Description
PAI 121255 is a yellow silicone turbo inlet seal O-ring (AS568 dash size -152, 0.103 in cross-section x 3.237 in ID) that replaces Cummins 3066211 and Mack 1577-3066211 on the N14 (Celect / Celect Plus) turbocharger inlet flange. 60 durometer silicone; rated for high-temperature charge-air sealing.
Specifications
| Manufacturer | PAI Industries |
|---|---|
| Part Number | 121255 |
| Part Type | Turbocharger Inlet O-Ring |
| Material | Silicone, 60 durometer (Shore A) |
| Color | Yellow |
| AS568 Dash Size | -152 |
| Cross Section | 0.103 in (2.62 mm) |
| Inside Diameter | 3.237 in (82.22 mm) |
| Warranty | 2 years (PAI) |
Cross References
This O-ring replaces or is equivalent to the following part numbers:
- Cummins: 3066211
- Mack: 1577-3066211
Applications
This turbo inlet O-ring fits the following Cummins engine families:
- Cummins N14 (mechanical, Celect, Celect Plus) — turbo inlet flange
Verify your engine series before ordering. The N14 turbo inlet uses the AS568 -152 silicone seal; confirm cross-section and ID against your existing seal.









