381251 Cat / Caterpillar BELT TENSIONER
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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 →
Suggested Additional Parts
Commonly sold with this product. These parts are sold separately.
| Brand | PAI Industries |
| Engine Make | Caterpillar |
| Engine Model | 3126 · C7 |
BELT TENSIONER
Fits:
- CATERPILLAR 3126 SERIES
- CATERPILLAR C7 ENGINE
OEM cross-references:
- CATERPILLAR 120-6659
- CATERPILLAR 1206659
- CATERPILLAR 135-2151
- CATERPILLAR 1352151
- CATERPILLAR 217-8938
- CATERPILLAR 2178938
- CATERPILLAR 7E3999
- DETROIT DIESEL 23550238
- FREIGHTLINER TRUCK PARTS GT38511
- MACK 4333-1687819C91
- MACK 4333-1833688C1
- MACK 4333-2028958C92
- MACK 4333-3543883C1
- MACK 87GB33
- NAVISTAR 1687819
- NAVISTAR 1687819C91
- NAVISTAR 1687819C92
- NAVISTAR 1833688
- NAVISTAR 1833688C1
- NAVISTAR 1833688C2
- NAVISTAR 2028958
- NAVISTAR 2028958C91
- NAVISTAR 2028958C92
- NAVISTAR 3543883
- NAVISTAR 3543883C1
Warranty: 24 months
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.





