121257 Cummins Rectangular Sealing Ring
Used In These Kits
This part is included in 4 engine & overhaul kits — find yours below.
Suggested Additional Parts
Commonly sold with this product. These parts are sold separately.
-
131472Cummins N14 Edge Molded Oil Gasket, PAI (OEM 3069678), Pack of 2 In stock -
121211Cummins O-Ring In stock -
131499Cummins N14 ENGINES OIL CONNECTION GASKET (Pack of 5) In stock -
131470Cummins N14 Support Gasket, PAI (OEM 3066298), Pack of 5 In stock -
131498Cummins N14 ENGINES OIL COOLER SUPPORT GASKET (Pack of 5) In stock
| Brand | PAI Industries |
| Part Category | Seals & O-Rings |
| Engine Make | Cummins |
| Condition | New |
| Stage / Tier | Standard |
Sold in a pack of 12. Price shown is for 12 pieces.
RECTANGULAR SEALING RING
PAI Part #: 121257
OEM References:
- CUMMINS 3066212
- CUMMINS 3072375
- MACK 1577-3072375
Warranty: 2.0 year(s)
These catalog references may identify this part or components in an assembly. A listed number alone does not confirm whole-assembly interchange or vehicle fitment. Confirm the required part before ordering.
| Number |
|---|
| 3066212 |
| 3072375 |
| 1577-3072375 |
| CUMMINS 3066212 |
| CUMMINS 3072375 |
| MACK 1577-3072375 |
| PAI 121257 |
No cross-reference numbers match that search.
Discovery models are listed below. Confirm the complete application and any ESN/CPL or size restrictions before ordering.
Most PAI parts carry a 2-year unlimited-mileage PAI warranty — 3 years on the High Performance tier, 1 year on Excel by PAI. See Warranty & Returns for full coverage terms, or call a specialist to confirm the exact coverage on this part.
PAI published warranty tiers: High Performance — 3-Year · Genuine PAI — 2-Year · Excel — 1-Year, unlimited mileage. The badge beside the price shows this product's recorded term; when no badge is shown, confirm coverage with a specialist.









