Cat 3406 Piston, PAI 311010 (OEM 9Y4004), Pack of 1
Used In These Kits
This part is included in 1 engine & overhaul kits — find yours below.
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311011Caterpillar 3400 / 3406 Piston 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 | Caterpillar |
| Engine Model | 3406 |
Pack of 1.
PAI 311010 is a piston for Caterpillar 3406 applications; PAI specifies 14.5:1 compression ratio and 5.40-inch bore. The manufacturer-designated reference is Caterpillar OEM 9Y4004. This listing identifies the piston component; no additional assembly components are represented. PAI cross-references Caterpillar: 1W8901, 1W9372, 378-0509, 3780509, 8N1606, 9Y4004, 0R3519, 0R2694, 2900017, 290-0017, 0R4515; Dana Corporation/Private Brand Sale: 224-3244X.
Match the complete part number and required application before ordering.
Fits:
- CATERPILLAR 3400 SERIES
- CATERPILLAR 3406 ENGINES
OEM cross-references:
- CATERPILLAR 1W8901
- CATERPILLAR 1W9372
- CATERPILLAR 378-0509
- CATERPILLAR 3780509
- CATERPILLAR 8N1606
- CATERPILLAR 9Y4004
- DANA CORPORATION/PRIVATE BRAND SALE 224-3244X
- CATERPILLAR 0R3519
- CATERPILLAR 0R2694
- CATERPILLAR 2900017
- CATERPILLAR 290-0017
- CATERPILLAR 0R4515
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 |
|---|
| CATERPILLAR 1W8901 |
| CATERPILLAR 1W9372 |
| CATERPILLAR 378-0509 |
| CATERPILLAR 3780509 |
| CATERPILLAR 8N1606 |
| CATERPILLAR 9Y4004 |
| DANA CORPORATION/PRIVATE BRAND SALE 224-3244X |
| CATERPILLAR 0R3519 |
| CATERPILLAR 0R2694 |
| CATERPILLAR 2900017 |
| CATERPILLAR 290-0017 |
| CATERPILLAR 0R4515 |
| PAI 311010 |
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.






