Cummins 6B Standard 16.5:1 Piston, PAI 111220 (OEM 3907156), Pack of 1
Used In These Kits
This part is included in 1 engine & overhaul kits — find yours below.
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111221PISTON KIT In stock - No kits match that search.
Suggested Additional Parts
Commonly sold with this product. These parts are sold separately.
| Brand | PAI Industries |
| Part Category | Pistons, Rings & Rods |
| Sub-Type | Piston |
| Engine Make | Cummins |
| Engine Model | 4B · 6B |
Pack of 1.
PAI 111220 is a standard 16.5:1 piston. Manufacturer application: Cummins 6B. Manufacturer compression ratio: 16.5:1. Manufacturer specifies 3 ring grooves. Manufacturer marks Oversized: No. Manufacturer-listed Bore: 4.02 inches / 102.11 mm. Manufacturer-listed Height: 4.15 inches / 105.41 mm. Manufacturer-listed Pin Bore: 1.575 inches / 40.01 mm. Manufacturer parent reference: CUMMINS 3907156.
Manufacturer application table: CUMMINS 4B ENGINES 3.9; CUMMINS 6B ENGINES 5.9.
Compare the complete part number, quantity and listed specifications with the required part before ordering.
Fits:
- CUMMINS 4B ENGINES 3.9
- CUMMINS 6B ENGINES 5.9
OEM cross-references:
- CUMMINS 3907156
Warranty: 24 months
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 |
|---|
| CUMMINS 3907156 |
| PAI 111220 |
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.