Caterpillar original Fuel Injector 418-3229 10R-2848 for C4.4 C6.6 320D 323D 420F2 428F2 430F2 444F2 434F2 original new injector

The Caterpillar 418-3229 is an OEM-specification common rail fuel injector engineered for the CAT C4.4 diesel engine platform, including C4.4 ACERT, industrial, generator, Tier 3, and Tier 4 variants. It is cross-referenced with 10R-7675, 387-9433, 2645A749, and 32F61-00062, providing direct-fit interchangeability across the C4.4 product family. The injector is suitable for CAT 416F, 420F, 430F, and 444F backhoe loaders, 907M, 908M, and 914M wheel loaders, telehandlers, generator sets, and industrial power units deployed in construction, mining, agricultural, power generation, and marine support applications.

Built with precision nozzle technology, high-pressure resistance, and industrial-grade wear-resistant materials, the 418-3229 delivers consistent fuel atomization, accurate metering, and stable injection performance under demanding load conditions. It contributes to improved combustion efficiency, lower exhaust emissions, reduced particulate formation, faster throttle response, and reliable cold-start performance. Each unit is manufactured to OEM-level tolerances to ensure long operational life and dependable engine performance across heavy-duty operating cycles.

Routine maintenance supports injector longevity and engine reliability. Before installation, operators should inspect fuel rail cleanliness, replace sealing washers, verify injector bore condition, flush contaminated lines, and perform ECM coding where required. After installation, conduct leak testing, verify rail pressure, confirm injector balance rates, and clear diagnostic fault codes. Best practices include using ultra-clean diesel, replacing filters on schedule, avoiding water contamination, monitoring engine fault codes, and maintaining proper fuel pressure. A 12-month warranty backs every unit.