Buna N Rectangular Sealing Ring, PAI 121278 (OEM 154087), Pack of 5
Used In These Kits
This part is included in 5 engine & overhaul kits — find yours below.
Suggested Additional Parts
Commonly sold with this product. These parts are sold separately.
| Brand | PAI Industries |
| Part Category | Seals & O-Rings |
| Engine Make | Cummins |
| Condition | New |
| Stage / Tier | Standard |
Pack of 5.
PAI 121278 is a buna n rectangular sealing ring. Manufacturer material: Buna N. Manufacturer durometer: 70. Manufacturer finish: Black. Manufacturer-listed Inside Diameter: 0.614 inches / 15.596 mm. Manufacturer-listed Cross Section: 0.066 inches / 1.676 mm. Manufacturer-listed Thickness: 0.066 inches / 1.676 mm. Manufacturer parent reference: CUMMINS 154087.
Compare the complete part number, quantity and listed specifications with the required part before ordering.
PAI Part #: 121278
OEM References:
- CUMMINS 154087
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 |
|---|
| 154087 |
| CUMMINS 154087 |
| PAI 121278 |
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.