Caterpillar 3300 STD Natural Gas Exhaust Insert, PAI 391976 (OEM 7N1649), Pack of 6
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Commonly sold with this product. These parts are sold separately.
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| Engine family | Caterpillar 3304 · Caterpillar 3306 |
| Brand | PAI Industries |
| Part Category | Cylinder Head Components |
| Sub-Type | Valve Train Component |
| Engine Make | Caterpillar |
| Engine Model | 3304 · 3306 |
| Condition | New |
| Stage / Tier | Standard |
PAI 391976 is a std natural gas exhaust insert for Caterpillar applications. PAI specifies standard size and natural gas applications. The manufacturer designates product-level OEM 7N1649. PAI cross-references Caterpillar 7N1649. PAI lists these application categories: Caterpillar 3304 Engines, Caterpillar 3306 Engine. Confirm the complete required part number before ordering.
Pack of 6.
PAI Part #: 391976
OEM References:
- CATERPILLAR 7N1649
Applications:
- CATERPILLAR 3304 ENGINES
- CATERPILLAR 3306 ENGINE
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 |
|---|
| 7N1649 |
| CATERPILLAR 7N1649 |
| PAI 391976 |
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.





