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Caterpillar · Models: 3406E / 3408 / C15 / C16 / C18
370023 Cat / Caterpillar MAIN BEARING
Commercial diesel bearings. Match the listed part and engine identifiers before ordering.
2-Year WarrantyPAI Industries
$42.00$46.01
Save $4.01
In stock — ships same day
22 available
PAI Part #370023
JAK'S Part #JAKS-370023
Complete The Rebuild
Suggested Additional Parts
Commonly sold with this product. These parts are sold separately.
| Brand | PAI Industries |
| Part Category | Engine Bearings |
| Sub-Type | Engine Bearing |
| Engine Make | Caterpillar |
| Engine Model | 3406E · 3408 · C15 · C16 · C18 |
MAIN BEARING
Fits:
- CATERPILLAR 3406E SERIES
- CATERPILLAR C15 ENGINE
- CATERPILLAR C16 ENGINES
- CATERPILLAR C18 ENGINE
- CATERPILLAR 3408 ENGINES
OEM cross-references:
- CATERPILLAR 4W5700
- CATERPILLAR 6N4171
- CATERPILLAR 7N1195
- CATERPILLAR 8N5424
Warranty: 24 months
Discovery models are listed below. Confirm the complete application and any ESN/CPL or size restrictions before ordering.
Caterpillar 3406E 3408 C15 C16 C18
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.





