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Home / Products / CATERPILLAR Diesel Fuel Injectors / 104-3377 0R-8786 138-8756 126-0499 2225966 10R0781 222-5966 20R-0759 173-4059 Fuel Injector Suitable for CAT 3126B 3126E Engine
Quality 104-3377 0R-8786 138-8756 126-0499 2225966 10R0781 222-5966 20R-0759 173-4059 Fuel Injector Suitable for CAT 3126B 3126E Engine factory
Quality 104-3377 0R-8786 138-8756 126-0499 2225966 10R0781 222-5966 20R-0759 173-4059 Fuel Injector Suitable for CAT 3126B 3126E Engine factory
Quality 104-3377 0R-8786 138-8756 126-0499 2225966 10R0781 222-5966 20R-0759 173-4059 Fuel Injector Suitable for CAT 3126B 3126E Engine factory
Quality 104-3377 0R-8786 138-8756 126-0499 2225966 10R0781 222-5966 20R-0759 173-4059 Fuel Injector Suitable for CAT 3126B 3126E Engine factory
Quality 104-3377 0R-8786 138-8756 126-0499 2225966 10R0781 222-5966 20R-0759 173-4059 Fuel Injector Suitable for CAT 3126B 3126E Engine factory
Quality 104-3377 0R-8786 138-8756 126-0499 2225966 10R0781 222-5966 20R-0759 173-4059 Fuel Injector Suitable for CAT 3126B 3126E Engine factory
Quality 104-3377 0R-8786 138-8756 126-0499 2225966 10R0781 222-5966 20R-0759 173-4059 Fuel Injector Suitable for CAT 3126B 3126E Engine factory

104-3377 0R-8786 138-8756 126-0499 2225966 10R0781 222-5966 20R-0759 173-4059 Fuel Injector Suitable for CAT 3126B 3126E Engine

Basic Properties
Place of Origin: USA
Brand Name: C-A-TERPILLA
Certification: Contact: 86+ 19959162250
Model Number: 138-8756
Trading Properties
Minimum Order Quantity: 1
Price: $400-$550
Payment Terms: L/C, D/A, D/P, T/T, Western Union, , Western Union
Supply Ability: 1000
Tags

10R-7224 Diesel Engine Fuel Injector

387-9433 Diesel Engine Fuel Injector

387-9437 C-A-TERPILLAR Diesel Fuel Injectors
Product Summary
104-3377 0R-8786 138-8756 126-0499 2225966 10R0781 222-5966 20R-0759 173-4059 Fuel Injector Suitable for CAT 3126B 3126E Engine Product Description: Parts 138-8756 OEM NO 126-0499 Powerplant nozzle Payment term T/T,Western Union 1. Product Basic Specifications This table shows the core basic ...

Product Details

Highlight:

CAT 3126B fuel injector

,

Caterpillar diesel fuel injector

,

3126E engine fuel injector
Product Name: C-A-Terpillar Injector
OE NO: 138-8756
OE no1: 126-0499
Warranty: 12 Months
Contact: 86+ 19959162250
Quality: Brand New Genuine
Car Model: C-A-T ENGINE
AppliC-A-Tion: Fuel Injection System
Material: High Speed Steel
Type: Trck
SIZE: Origional Standard
Product Description

 

104-3377 0R-8786 138-8756 126-0499 2225966 10R0781 222-5966 20R-0759 173-4059 Fuel Injector Suitable for CAT 3126B 3126E Engine


Product Description:

Parts 

138-8756
OEM NO 

126-0499

Powerplant

nozzle
Payment term T/T,Western Union 

 

1. Product Basic Specifications

This table shows the core basic specifications of the 138-8756 injector. As a genuine CCaterpillar OEM part, it is exclusively designed for 3126 engines. Its premium alloy steel body ensures durability, while the 12 Months warranty confirms its reliable quality. The Approx. 2.1 kg weight and standard design guarantee perfect fit and easy installation, laying a solid foundation for stable engine operation and long service life. Every specification is engineered to meet CCaterpillar's rigorous standards.

Part Number 138-8756 (Genuine CCaterpillar OEM)
Product Type Diesel Fuel Injector Assembly
Compatible Engine CCaterpillar 3126 Series
Body Material High-strength alloy steel
Net Weight Approx. 2.1 kg
Warranty Period 12 Months (Manufacturing Defects Only)

2. Cross-Reference & Universal Part Numbers

This table provides universal part numbers for the 138-8756 injector, facilitating quick part replacement and inventory management. All listed universal numbers are fully compatible with the original part, requiring no engine modification. While interchangeable, genuine parts are recommended to maintain the injector's precision and performance, avoiding issues caused by non-certified alternatives and ensuring consistent engine efficiency. These cross-references simplify sourcing and maintenance planning.

OEM Part Number 138-8756
Universal No. 1 173-1080
Universal No. 2 10R-5254
Universal No. 3 10R-2815
Universal No. 4 10R-5985
Compatibility Note Fits CCaterpillar 3126 Engines

3. Pre-Installation Preparation Steps

These pre-installation steps are critical to protect the 138-8756 injector and ensure installation success. Inspecting for damage and verifying compatibility prevents mismatches, while cleaning and preparing seals avoid fuel leaks. Proper preparation protects the injector's internal components, such as the nozzle and needle valve, laying the groundwork for smooth installation and optimal post-installation performance. Skipping these steps risks damaging the new injector or causing poor operation.

Step 1 Inspect injector for physical damage
Step 2 Verify part number matches engine
Step 3 Clean injector bore and fuel rail
Step 4 Remove old seals and debris
Step 5 Prepare new genuine O-rings
Step 6 Check tool torque accuracy

4. Installation & Operation Guide

This table details the correct installation and operation of the 138-8756 injector. Proper lubrication and torque prevent O-ring damage and fuel leaks, while post-installation checks confirm functionality. Following these steps ensures the injector works with the 3126 engine seamlessly, avoiding poor atomization, misfires, or premature failure, and maintaining optimal fuel delivery efficiency. Correct installation is essential for achieving the injector's designed performance and longevity.

Step 1 Apply clean engine oil to O-rings
Step 2 Insert injector vertically into bore
Step 3 Torque retaining bolts to 20-25 N·m
Step 4 Connect fuel and electrical connections
Step 5 Start engine and inspect
Step 6 Verify proper operation

 

 

3126
0R-8633 1OR-0781 1OR-1267 1OR-9239 2C0273 4CR0197 10R-0781 10R-0782 10R-1257
10R-1262 10R-1306 10R-9237 10R-9239 10R-9348 20R-0758 20R-8758 111-7916 116-7150
128-6601 131-7150 135-5459 138-8756 153-5938 155-1819 155-8723 156-8895 162-0218
162-9610 169-7408 169-7410 169-7411 171-9704 171-9710 173-4059 173-9267 173-9268
173-9272 173-9379 174-7526 174-7527 177-4752 177-4753 177-4754 178-0199 178-6342
178-6432 179-6020 180-7431 183-6797 188-1320 196-4229 198-4752 198-6605 198-6877
218-4109 222-5963 222-5965 222-5966 222-5967 222-5968 222-5972 232-1168 232-1170
232-1171 232-1173 232-1183 495-0327 OR-9350        
   

 

 

ccaterpillar Fuel Injector Series - Engine - Equipment Appliccccation Table

Fuel Injector / Engine Series Common Injection Technology Corresponding Engine Platform Common ccccat Models / Equipment Platforms
3116 Series Mechanical Injection / Early Electronic Platform 3116, 3116T, 3116TA, 3116DIT M318, M320 Wheel Excavators; 135H Motor Grader; D6M Dozer
3126 / 3126B Series HEUI 3126, 3126B 120H Motor Grader; 950G Series II Wheel Loader; 950G Platform
3126E Series HEUI 3126E Commonly used in medium-duty construction and industrial platforms similar to the 3126 appliccccation range
C6.4 Series ACERT Injection Platform C6.4 ACERT 320D / 320D L; 323D L / LN; 320D LRR; 320D FM
C6.6 Series ACERT Injection Platform C6.6 ACERT 320D / 320D L (C6.6 versions); 320E LN; 323E LN
C7 Series HEUI C7, C7 ACERT 120K Motor Grader; 950H Wheel Loader
C7.1 Series Common Rail / Later Electronic Injection C7.1, C7.1 ACERT 320D2 / D2 L, 326D2, 330D2 Excavators; 950K, 950, 962, 930M Wheel Loaders; Generator Sets
C9 Series HEUI-B C9, C9 ACERT 330D / 330D L / 330D MH; construction and industrial platforms
C10 Series Electronic Unit Injection Family C10 140H, 143H, 160H, 163H, 14H, 16H Motor Graders; 814F Wheel Dozer; 815F Compactor; 816F Landfill Compactor; 966G II, 972G II Wheel Loaders; D7R II Dozer; 725 / 730 Articulated Trucks; R1600G, R1700G LHD; W345B II Wheel Excavator; 345B / 365B Excavators
C12 Series Electronic Unit Injection C12, C12 Marine Widely used across 140H, 143H, 160H, 163H, 14H, 16H; 966G II, 972G II; D7R II; 725 / 730; W345B II; 345B / 365B; also widely used in marine appliccccations
C13 Series MEUI C13, C13 ACERT 345D L Excavator; 730C EJ Articulated Dump Truck; Generator Sets; Industrial Power Platforms
C15 Series MEUI C15, C15 ACERT 770 Off-Highway Truck; 374D L / 374F L Excavators; 365C Demolition Excavator; R3000H LHD; Industrial Power and Generator Sets
3406E Series EUI 3406E AD30 Underground Mining Truck; 16H Motor Grader; 824G Series II Wheel Dozer; 826G Series II Landfill Compactor
C18 Series EUI / Later Electronic Injection Platform C18, C18 ACERT Generator Sets; Marine Appliccccations; Large Industrial and Mining Platforms
 

 

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104-3377 0R-8786 138-8756 126-0499 2225966 10R0781 222-5966 20R-0759 173-4059 Fuel Injector Suitable for CAT 3126B 3126E Engine104-3377 0R-8786 138-8756 126-0499 2225966 10R0781 222-5966 20R-0759 173-4059 Fuel Injector Suitable for CAT 3126B 3126E Engine104-3377 0R-8786 138-8756 126-0499 2225966 10R0781 222-5966 20R-0759 173-4059 Fuel Injector Suitable for CAT 3126B 3126E Engine

 

104-3377 0R-8786 138-8756 126-0499 2225966 10R0781 222-5966 20R-0759 173-4059 Fuel Injector Suitable for CAT 3126B 3126E Engine

 
Contact Detail:
ADD:Huangpu Machinery City, No.585-A, No.138, Southeast Road, Huangpu District, Guangzhou City,
Guangdong Province Tel:+86 020 88557755
Cellphone:+86 19959162250 Whatsapp::+86 19959162250
Email:2209396088@qq.com
 
 
 

Mr. Lee

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