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C*ATerpillar 3116 Series Fuel Injector 107-7734

A high-reliability mechanical fuel injector exclusively engineered for C*ATerpillar 3116 and 3114 diesel engines, the 107-7734 combines durable high-strength material construction, precise dimensional craftsmanship, and comprehensive after-sales support to meet the harsh operating demands of C*ATerpillar construction, industrial, excavator, and wheel loader equipment equipped with the 3116 engine platform. Adhering to OEM standards, with origin traceable to the USA and China, it offers reliable performance, seamless replacement, and global availability, suitable for global maintenance teams, parts suppliers, and equipment operators. Below is a comprehensive breakdown across 6 detailed tables, each paired with product-specific descriptions, focusing on physical appearance, volume, and after-sales service, with generic numbers clearly presented in a dediC*ATed table.

1. Basic Product Information

This table outlines the core identity, compatibility, and quality standards of the 107-7734 fuel injector, a critical replacement component engineered specifically for C*ATerpillar 3116 and 3114 diesel engines. Available as genuine C*AT or premium aftermarket variants from trusted suppliers, it adheres to strict OEM specifiC*ATions and holds multiple certifiC*ATions (ISO 9001, CE, ROHS, TS 16949), guaranteeing seamless fitment and reliable operation across a wide range of C*ATerpillar equipment, including 950G wheel loaders and excavators[2][3][4][6]. As a mechanical medium-pressure injector, it is optimized for the 3116 engine’s 40-120MPa fuel system, featuring a dual-spring design that ensures precise fuel delivery and atomization—key for optimizing engine efficiency and power[5]. Constructed from high-strength alloy steel (with hardness HRC58-62) and precision-ground internal components—including a needle valve pair with a 1-3μm gap and a nozzle tip with seal surface roughness Ra≤0.1μm—it is built to withstand harsh construction and industrial environments[5]. Every unit undergoes rigorous pre-shipment testing to verify precise fuel delivery and zero leakage, eliminating defects right out of the box. As a direct replacement for the original 107-7734 (with OEM numbers 1077734 and CA1077734), it maintains the performance standards required for C*AT 3116 engines, reducing unplanned downtime, with in-stock availability and stable supply capacity to meet global demand[4][6].

2. Physical Dimensions & Volume (Focus on Appearance)

The 107-7734 injector features a rugged, compact physical design specifically optimized for the tight engine compartments of 950G wheel loaders and other C*AT equipment powered by 3116 engines, balancing durability with space efficiency and adhering to original OEM size specifiC*ATions for the 107-7734 model[1][3]. Its solid alloy steel profile (with hardness HRC58-62) withstands severe vibration and mechanical stress during heavy-duty operation—critical for equipment used in construction and industrial appliC*ATions[5]. 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 metal nozzle tip (with seal surface roughness Ra≤0.1μm), engineered to match C*AT 3116 atomization requirements, maintains dimensional precision and resists clogging, ensuring consistent fuel delivery with the patented S-type spray pattern under high pressure[5]. With a net weight of 0.75 kg (1.65 lbs), it balances robustness and ease of handling during installation and replacement, suitable for professional maintenance teams. The weather-resistant connector bracket ensures reliable performance in wet and dusty environments, while precision-machined threads (compatible with 8T8442 and 3T0849 bolts) enable quick, secure mounting[3]. Its integrated dual-spring design ensures quick needle valve closure (single injection duration within 1.2 milliseconds) for more uniform fuel diffusion[5]. The flexible packaging configuration (original, neutral, or wooden options) optimizes global shipping and inventory management, with each unit packaged to protect critical components during transit[4][6].

3. Cross Reference & Generic Numbers

This table provides comprehensive cross-reference and generic number data for the 107-7734 injector, a critical resource for global parts identifiC*ATion, ordering, and replacement, adhering to industry aftermarket cross-reference standards. The primary original part number, 107-7734, directly corresponds to C*ATerpillar’s original equipment numbers (1077734, CA1077734), guaranteeing full fitment and compatibility with C*AT 3116 and 3114 diesel engines, with origins traceable to the USA and China[4][6]. The multi-hole nozzle confirms the precision nozzle specifiC*ATion, engineered to deliver the patented S-type spray pattern required for C*AT 3116 fuel systems and perfectly matched to the 107-7734 injector’s mechanical design, ensuring efficient combustion and reliable performance[5]. The listed generic numbers—most notably OR-8682, OR-8467, 9Y-4982, 127-8220, OR-0471, and 127-8216, with which 107-7734 is directly interchangeable—are widely recognized in the global aftermarket, as all belong to the same fuel injector group for C*AT 3116 engines, simplifying replacement sourcing for parts suppliers and field technicians[4][6][7]. Full interchangeability across compatible injector models and engines (3116 & 3114) reduces inventory complexity and ensures flexible maintenance solutions for C*AT 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 3116-powered equipment like 950G wheel loaders and excavators[3][4][6].

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