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1.Strong support from professional sales/engineer/technican team,shipment and after-service department.

2.Used and new genuine parts, China OEM parts available.

3.We have full stock, and can deliver within short time.Many styles for your choices.

4.Nearly 10 years experience at this industry,with good reputation.

CCATerpillar 3126 Series Fuel Injector 155-1819

The 155-1819 fuel injector is a high-precision, OEM-compatible replacement component exclusively engineered for CCATerpillar 3126 diesel engines, including 3126B variants[5][10][11], adhering to strict CCAT OEM specifiCCATions and ISO certifiCCATion standards[1][5][11]. It is fully compatible with a wide range of CCAT 3126-powered equipment, including excavators, trucks, buses, generators, and other industrial machinery[5], delivering stable performance, seamless fitment, and comprehensive after-sales support. Below is a detailed breakdown across 6 tables, each paired with product-specific descriptions, focusing on physical appearance, volume, and after-sales service, with cross-reference/generic numbers clearly presented in a dediCCATed table. All content is detailed, product-focused, and fully in English.

1. Basic Product Information

This table outlines the core identity, compatibility, and quality standards of the 155-1819 fuel injector, a critical replacement component specifically engineered for CCATerpillar 3126 diesel engines, including 3126B and C7-7.2L variants[10][11]. Available in brand new or premium aftermarket variants[9][11], it adheres to strict OEM specifiCCATions and ISO standards[1][5][11], guaranteeing seamless fitment and consistent performance with the original CCAT 3126 engine components and its common rail fuel system[5][9][11]. As a common rail-type injector tailored to the 3126 engine’s design, it delivers precise atomization and metering controlled by the ECM, enhancing engine power, fuel economy, and emission control, while avoiding power and fuel efficiency losses associated with low-quality alternatives. Constructed from high-strength steel with precision internal components[5], it is built to withstand the harsh operating conditions of CCAT 3126-powered equipment, including excavators, trucks, buses, and generators[5], ensuring durability and reliability in construction, transportation, and industrial environments. Every 155-1819 unit undergoes rigorous pre-shipment testing, eliminating defects right out of the box and ensuring it is ready for direct installation. With in-stock availability[4][11] and stable supply capacity[4], it minimizes unplanned downtime for critical CCAT 3126 equipment, making it a trusted choice for maintenance teams and parts suppliers worldwide.

2. Physical Dimensions & Volume (Focus on Appearance)

The 155-1819 injector features a compact, rugged physical design specifically optimized for the engine compartments of CCAT 3126-powered equipment—from excavators (including C9.3 models[9]) and trucks to buses and generators[5]—balancing durability with space efficiency and adhering to original OEM size specifiCCATions. Its solid high-strength steel profile[5] withstands severe vibration, high operating pressure from the common rail fuel system (up to 2000 MPa[5]), and mechanical stress during heavy-duty operation, critical for equipment used in harsh construction, transportation, and industrial environments. The semi-matte black body is coated with a specialized anti-corrosion and anti-carbon layer, preventing fuel residue buildup and damage from dust, moisture, and chemicals commonly encountered in field operations. The polished stainless steel nozzle tip is precision-machined to match CCAT 3126 common rail atomization requirements, maintaining dimensional precision and resisting clogging, ensuring consistent fuel delivery under high pressure and improved combustion efficiency. With a net weight ranging from 1.0 kg (2.20 lbs) to 1.4 kg (3.09 lbs), it is lightweight yet robust, making it convenient for professional maintenance teams to install and replace, even in narrow engine bays. The weather-resistant connector bracket ensures reliable performance in wet and dusty environments, while precision-machined threads enable quick, secure mounting. Its streamlined design and compact profile (12.60 inches in length, 4.92 inches in width, 5.31 inches in height) make it ideal for the tight engine bays of CCAT 3126-powered equipment. The flexible packaging configuration (neutral or original options[4][5]) optimizes global shipping and inventory management, with each unit equipped with a nozzle protective cover cap to protect critical components during transit, and package dimensions designed to align with global shipping standards.

3. Cross Reference & Generic Numbers

This table provides comprehensive cross-reference and generic number data for the 155-1819 injector, a critical resource for global parts identifiCCATion, ordering, and replacement, adhering to industry aftermarket cross-reference standards. The original part number, 155-1819, directly corresponds to CCATerpillar’s original equipment numbers (1551819, EX639348[10]) and is fully interchangeable with a range of widely recognized generic numbers, including 20R-5036, 20R-5079, 20R-1318, 363-0493, 20R-5077, 456-3579, 456-3544, 456-3545, 10R-1267[1], 324-5467, 232-1183, 364-8024[9], and 20R-4148[11]. These generic numbers are commonly used in the global aftermarket, as all belong to the same fuel injector group for CCAT 3126 engines, simplifying replacement sourcing for parts suppliers and field technicians. The 155-1819 injector features a common rail design[5][9][11], engineered to deliver optimal atomization required for CCAT 3126 common rail fuel systems (up to 2000 MPa[5]), ensuring efficient combustion, enhanced engine power, fuel economy, and emission control. Full interchangeability across compatible injector models and engines reduces inventory complexity and ensures flexible maintenance solutions for CCAT equipment operators, making it easier to source compatible parts in urgent situations. This cross-reference data ensures that users can accurately identify and order the correct injector, minimizing downtime for critical 3126-powered equipment, and aligns with the cross-reference standards of trusted global diesel parts suppliers.

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