Caterpillar 374-0750 Fuel Injector (for C32 Engine) Detailed Introduction

Overview

The 374-0750 is an original equipment manufacturer (OEM) electronic unit fuel injector (EUI) designed and manufactured by Caterpillar, purpose-built for heavy-duty CAT diesel engine platforms including the C32 series. As a critical component of the high-pressure fuel injection system, it delivers precisely metered, finely atomized diesel fuel into the combustion chamber at calibrated timing and pressure. This enables optimal combustion efficiency, consistent power delivery, improved fuel economy, and compliance with strict emissions standards, even under continuous heavy-load operating conditions in construction, mining, marine, and power generation applications.

Core Technical Specifications

Parameter	Specification
Official Part Number	374-0750
Component Type	Electronic Unit Fuel Injector (EUI) Assembly
Compatible Fuel	Ultra-low sulfur diesel (ULSD) & standard low-sulfur diesel
Overall Length	14.8 inches
Height	3.0 inches
Unit Weight	6.0 lb
Supply Condition	Genuine new; Caterpillar Remanufactured (Reman) option available

Key Features & Performance Advantages

1. Precision Fuel Delivery & Combustion Optimization

Engineered to Caterpillar's strict OEM calibration standards, the 374-0750 injector achieves micron-level fuel metering accuracy and uniform fuel atomization. This supports complete, controlled combustion across all engine cylinders, maximizing power output while minimizing fuel consumption. Compared to reverse-engineered aftermarket alternatives, it avoids up to 5% loss in fuel efficiency and power performance.

2. Extended Service Life & Wear Resistance

The injector integrates a wear-resistant coated plunger and high-grade corrosion-resistant metal components, specially formulated to withstand the low-lubricity properties of modern low-sulfur diesel fuels. Its robust construction resists abrasion, fuel erosion, and thermal fatigue, delivering reliable long-term operation in harsh working environments with high dust, vibration, and temperature fluctuations.

3. Factory-Validated Quality & Reliability

Every 374-0750 unit undergoes comprehensive end-of-line testing at Caterpillar facilities, including high-pressure leakage inspection, fuel flow rate calibration, solenoid valve performance verification, and durability cycling. This 100% quality check ensures each injector meets consistent performance benchmarks and operates reliably immediately after installation.

4. Emissions Compliance

By enabling precise control over injection timing, pressure, and fuel quantity, the injector supports compliance with stringent global diesel emissions regulations, reducing particulate matter (PM), nitrogen oxides (NOₓ), and greenhouse gas emissions without compromising engine power output.

Compatibility

Compatible Engine Models

The 374-0750 injector is compatible with multiple Caterpillar heavy-duty diesel engine families:

• CAT C15 (industrial and petroleum engine configurations)
• CAT C18
• CAT C27
• CAT C32

Applicable Equipment

This injector fits a wide range of Caterpillar heavy equipment:

• Off-Highway Trucks: 770G, 777G mining trucks
• Underground Equipment: AD30 articulated trucks; R2900, R2900G, R3000H load-haul-dump (LHD) loaders
• Hydraulic Excavators: 374D L large excavators
• Wheel Dozers & Compactors: 824C, 854K wheel dozers; 826C, 826H landfill compactors; 825C soil compactors
• Wheel Loaders: 980G, 980H, 992K large wheel loaders
• Track-Type Tractors: D6T, D8T crawler tractors (bulldozers)
• Wheel Tractor-Scrapers: 621B, 621E, 621F, 623B, 623E, 623F, 627E, 627F, 631D, 633D, 657E
• Power Generation: DE800S diesel generator sets
• Mining Shovels: 6040 FS hydraulic mining shovels

Cross Reference Part Numbers

The 374-0750 injector is interchangeable with the following equivalent part numbers:

• 20R-2284 (Caterpillar Reman fuel injector assembly)
• 10R3264, 10R3264R
• 253-0615, 2530615
• 20R1914, 20R2284
• 1480120046, 148-012-0046
• DCI10R3264R, FS10R3264
• R-20R2284, R20R2284

Warranty & After-Sales Support

Genuine Caterpillar 374-0750 fuel injectors are covered by a 12-month comprehensive warranty against defects in materials and workmanship. Caterpillar's global parts distribution network ensures ready stock availability to minimize equipment downtime, helping operators reduce overall owning and operating costs throughout the engine's service life.

Safety Notice: This product may expose users to crystalline silica and other chemical substances, which are known to the State of California to cause cancer and reproductive harm. Refer to official product safety documentation for complete details.