Original Replacement Fuel Injector OEM 138-8756 for CAT 3126 Series Diesel Engine
Product Details
OEM 138-8756 Fuel Injector
,CAT 3126 Series Diesel Injector
,Original Replacement Injection Nozzle
Caterpillar original Diesel Engine Fuel Injector, Replacement for OEM 0R-8786, 10R0781, 138-8756 compatible with Caterpillar 3126, 3126B, 3126E diesel engine applications original new injector
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Fuel Type |
Diesel |
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Condition |
Original OEM Replacement |
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Applicable Engine |
CAT 3126, 3126B, 3126E Series Diesel Engine |
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Injector Type |
Diesel Fuel Injector (Fuel Injection Nozzle Assembly) |
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Quality Standard |
OEM / OE Quality |
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Packaging |
Not Specified |
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Fuel System |
Diesel Fuel Injection System |
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OE Number |
138-8756 |
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Brand |
CAT |
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Cross Number / Universal Number |
138-8756, 1388756, 20R-4147, 20R4147, 20R-4148, 20R4148 |
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Vehicle / Equipment Application |
Industrial Generator, Generator Set, Industrial Power Unit, Marine Engine, Truck Engine, Construction Equipment |
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Application Type |
Heavy Duty Industrial, Marine, Truck, Construction, Power Generation Application |
For B2B buyers maintaining CAT 3126 series diesel engine assets, this fuel injector is a purpose-built fuel system component designed as a direct replacement for original equipment units. Classified as a diesel fuel injection nozzle assembly, it forms a core part of the engine fuel injection system, and is matched to the specifications of CAT 3126, 3126B and 3126E diesel engine variants across the full 3126 product series.
This component carries an official OE number of 138-8756, with a full set of cross-reference numbers to streamline parts matching for inventory management, parts replacement and service operations. Supported cross numbers include 1388756, 20R-4147, 20R4147, 20R-4148 and 20R4148, covering both standard OE and referenced reman part identifiers. It meets OEM and OE quality standards, delivering a dependable original-grade replacement solution for fuel system service needs.
This fuel injector fits a broad range of heavy-duty diesel equipment across industrial, marine and transportation sectors. Documented applications include industrial generators, generator sets, industrial power units, marine engines, truck engines and construction equipment, making it a versatile SKU for diesel parts distributors, repair facilities and fleet operators. As a core fuel injection component, it supports proper fuel delivery to help sustain normal engine operation across all supported use cases.
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