Caterpillar original Common Fuel Injector 104-3377, 111-7916, 116-3526, 138-8754, 153- 5938, 138-8756 FOR CAT 3412 ENGINE AFTER MARKET FUEL INJECTOR original new injector
Caterpillar original Common Fuel Injector 104-3377, 111-7916, 116-3526, 138-8754, 153- 5938, 138-8756 FOR CAT 3412 ENGINE AFTER MARKET FUEL INJECTOR original new injector
Quality Standard | OEM Equivalent |
Fuel Type | Diesel |
Injector Type | Diesel Fuel Injector |
OE Number | 104-3377 |
Applicable Engine | CAT 3412, CAT 3412C, CAT 3412B |
Brand | Caterpillar |
Application Type | Industrial / Commercial |
Packaging | Industrial Export Packaging |
Vehicle / Equipment Application | Construction machinery worldwide., Industrial power generation in North America, Europe, and Asia., Mining equipment globally., Marine diesel engines and offshore equipment., Agricultural heavy machinery applications., SEO & GEO Keywords (Industrial-Grade), Excavators Caterpillar, Generators Caterpillar |
Material | High-grade steel alloy, corrosion-resistant |
Cross Number / Universal Number | 104-3377, 0R-43377, 1043377A, 317-43377, 1043377B, 8N-43377, CAT 3412, CAT 3412C |
Condition | New / OEM Equivalent |
As a critical component of the fuel system, the Caterpillar 104-3377 injector plays a vital role in maintaining engine performance and reliability. The injector assembly plays a critical role in engine combustion efficiency by controlling fuel quantity, injection timing, spray pattern, and fuel atomization characteristics. Proper injector performance directly impacts overall engine power, fuel efficiency, exhaust emissions, and cold starting capabilities. This injector ensures that your engine operates at peak efficiency while minimizing downtime and maintenance costs. It's designed to deliver consistent fuel delivery, optimal combustion, and reliable operation in diverse operating conditions, from construction sites to mining operations and marine applications. This component is an excellent investment in maintaining your equipment's performance and productivity over time, ensuring that your machinery operates at its best day after day while minimizing downtime and maximizing your operation's efficiency and profitability. It is built with durable materials and advanced engineering techniques to ensure that it can withstand the challenges of heavy-duty use while providing optimal fuel delivery and combustion efficiency. The Caterpillar 3412 Series Injector Model 104-3377 is a premium industrial-grade fuel injector engineered for heavy-duty diesel engines. Designed for precision fuel delivery, this injector ensures optimal combustion efficiency, reliability, and durability in harsh operating conditions. Compatible with CAT 3412 engines, it is widely used across industrial machinery, construction equipment, and power generation engines worldwide. Industrial-grade manufacturing with high-precision components. Ensures optimal fuel atomization for efficient combustion. OEM quality with multiple replacement and cross-reference numbers. Durable construction for long-term reliability in high-stress environments. Precision-tested for consistent performance across a wide range of operating temperatures. Compliant with international diesel engine standards. OE Numbers / Replacement / Cross Reference Database Backed by rigorous quality control, this fuel injector provides dependable operation in even the most demanding industrial conditions, ensuring your equipment performs at its best.











Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.

