Shopping for: Confirm the part against your engine serial number and application before ordering.
Change engine
Cummins · Models: ISB / QSB
111821 Cummins PISTON KIT
Commercial diesel pistons. Match the listed part and engine identifiers before ordering.
2-Year WarrantyPAI Industries
Call or email for pricing
We have not published a price for this part yet.
(720) 445-6249
or parts@JAKsDiesel.com
and a specialist will quote it.
Unavailable online — request lead time
PAI Part #111821
JAK'S Part #JAKS-111821
| Brand | PAI Industries |
| Part Category | Pistons, Rings & Rods |
| Sub-Type | Piston |
| Engine Make | Cummins |
| Engine Model | ISB · QSB |
PISTON KIT
Fits:
- CUMMINS ISB ENGINES
- CUMMINS QSB SERIES ENGINE
OEM cross-references:
- 5320831
- 4931041
- 3901706
Discovery models are listed below. Confirm the complete application and any ESN/CPL or size restrictions before ordering.
Cummins ISB QSB
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.