Cat 3306 Cylinder Block Gasket, PAI 331320 (OEM 1H7666), Pack of 5
Used In These Kits
This part is included in 2 engine & overhaul kits — find yours below.
Suggested Additional Parts
Commonly sold with this product. These parts are sold separately.
-
381851Cat / Caterpillar THERMOSTAT In stock -
331209Caterpillar 3306 Sump Pan Gasket, PAI (OEM 1694199), Pack of 2 In stock -
331440Caterpillar 3300 Flywheel Housing Gasket, PAI (OEM 9H5921), Pack of 1 In stock -
EOS-3305Cat / Caterpillar SEAL In stock -
331586Cat / Caterpillar 3306 ENGINE OIL COOLER GASKET SET In stock
| Brand | PAI Industries |
| Part Category | Gaskets & Seals |
| Sub-Type | Gasket |
| Engine Make | Caterpillar |
| Engine Model | 3306 |
PAI 331320 is a cylinder block gasket for Caterpillar 3306 applications. PAI identifies Caterpillar OEM reference 1H7666.
Pack of 5.
Fits:
- CATERPILLAR 3300 SERIES
- CATERPILLAR 3306 ENGINE
OEM cross-references:
- CATERPILLAR 1H7666
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 1H7666 |
| PAI 331320 |
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.







