381851 Cat / Caterpillar THERMOSTAT
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Check application, pack quantity, and coverageCompare warranty, price, pack quantity, and included components. Confirm the part against your engine details before ordering. Compare warranties →
Used In These Kits
This part is included in 23 engine & overhaul kits — find yours below.
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330603-001Cat / Caterpillar 3306 ENGINE ENGINE KIT In stock -
340611-073INFRAME ENGINE KIT In stock -
340613-019Cat / Caterpillar 3406 ENGINES INFRAME ENGINE KIT In stock -
340614-010Cat / Caterpillar 3406 ENGINES INFRAME ENGINE KIT In stock -
340616-010Cat / Caterpillar 3406 ENGINES INFRAME ENGINE KIT In stock -
340619-001Cat / Caterpillar 3406 ENGINES ENGINE KIT In stock -
340620-001Cat / Caterpillar 3406 ENGINES ENGINE KIT In stock -
340620-010Cat / Caterpillar 3406 ENGINES ENGINE KIT In stock -
340622-010Cat / Caterpillar 3406E SERIES INFRAME ENGINE KIT In stock -
340624-010INFRAME ENGINE KIT In stock -
340625-010INFRAME ENGINE KIT In stock -
340632-010Cat / Caterpillar 3406E SERIES INFRAME ENGINE KIT In stock - 381853THERMOSTAT KIT View ›
- C11601-001ENGINE KIT View ›
- C12601-081OVERHAUL ENGINE KIT View ›
- C12601-113OVERHAUL ENGINE KIT View ›
- C12601-113HPHIGH PERFORMANCE OVERHAUL ENGINE KIT View ›
- C12601-121ENGINE KIT View ›
- C12601-129OVERHAUL ENGINE KIT View ›
- C13601-017ENGINE OVERHAUL KIT View ›
- C13601-017HPHP ENGINE KIT View ›
- C13601-019ENGINE OVERHAUL KIT View ›
- C16101-010ENGINEKIT View ›
- No kits match that search.
Suggested Additional Parts
Commonly sold with this product. These parts are sold separately.
| Brand | PAI Industries |
| Part Category | Cooling System |
| Sub-Type | Thermostat |
| Engine Make | Caterpillar |
| Engine Model | 3406E · C15 · C16 · C18 |
THERMOSTAT
Fits:
- CATERPILLAR 3406E SERIES
- CATERPILLAR C15 ENGINE
- CATERPILLAR C16 ENGINES
- CATERPILLAR C18 ENGINE
- CATERPILLAR 3400 SERIES
OEM cross-references:
- CATERPILLAR 174-6584
- CATERPILLAR 1746584
- CATERPILLAR 4W4842
- CATERPILLAR 7C3095
- CATERPILLAR 9Y5330
- CATERPILLAR 122-3821
- CATERPILLAR 1223821
- CATERPILLAR 247-7133
- CATERPILLAR 2477133
- PAI 381851
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 174-6584 |
| CATERPILLAR 1746584 |
| CATERPILLAR 4W4842 |
| CATERPILLAR 7C3095 |
| CATERPILLAR 9Y5330 |
| CATERPILLAR 122-3821 |
| CATERPILLAR 1223821 |
| CATERPILLAR 247-7133 |
| CATERPILLAR 2477133 |
| PAI 381851 |
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.