Shopping for: Confirm the part against your engine serial number and application before ordering.
Change engine
Caterpillar · Models: 3126
390078X Cat / Caterpillar 3126 SERIES INJECTOR ASSEMBLY
Commercial diesel fuel injector. Match the listed part and engine identifiers before ordering.
Warranty DetailsPAI Industries
$837.99$1,688.57
Save $850.58
+ $187.50 USD refundable core exchange
In Stock
PAI Part #390078X
JAK'S Part #JAKS-390078X
Core Charge$187.50 USD refundable
| Brand | PAI Industries |
| Part Category | Fuel Injectors |
| Sub-Type | Fuel Injector |
| Engine Make | Caterpillar |
| Engine Model | 3126 |
| Condition | Remanufactured |
| Core Charge | $187.50 USD refundable |
INJECTOR ASSEMBLY
Fits:
- CATERPILLAR 3126 SERIES
OEM cross-references:
- CATERPILLAR 1774752
- CATERPILLAR 177-4752
- CATERPILLAR 1786342
- CATERPILLAR 178-6342
- CATERPILLAR 10R1257
- CATERPILLAR 10R1257R
Warranty: 6 months
Discovery models are listed below. Confirm the complete application and any ESN/CPL or size restrictions before ordering.
Caterpillar 3126
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.