Caterpillar original 9Y-4982 Mechanical Fuel Injector Assembly for 3114 3116 C3116 D5M IT28G E320B E322B E325B 950F 960F Excavator Replacement original new injector

The CAT 9Y-4982 fuel injector is engineered as a direct OE replacement for the Caterpillar 3116 diesel engine, delivering precise fuel metering and a controlled spray pattern that supports efficient combustion across demanding duty cycles. It carries a broad cross-reference range, covering 0R-8682, 0R-8467, 0R-0471, 127-8220, 101-4561, 0R-8477, 0R-3580, and 7E-8727, which allows distributors and fleet operators to consolidate inventory while maintaining compatibility with a wide spectrum of CAT 3116-powered equipment. Heavy-duty construction, individually tested sealing performance, and bench-verified flow characteristics ensure reliable operation under high injection pressures and prolonged load conditions.

This injector is widely used in track-type tractors such as the D5M, integrated toolcarriers including the IT28G, wheel scrapers like the 613C, and compactors such as the CS-434 and CS-531, as well as excavators, loaders, generator sets, marine auxiliary engines, and other industrial and mining machinery. Its technician-friendly direct replacement design allows straightforward installation without modification, supporting rapid field service and reduced equipment downtime. The component is supplied in export-ready packaging suitable for global parts distribution and is available in multiple supply conditions to meet diverse procurement requirements.

Routine maintenance is essential to maintain injector performance. Operators should perform regular fuel filter replacement, drain the water separator, and use clean diesel to prevent internal wear. Periodic injector leak inspection, spray pattern testing, and cylinder balance testing help identify early signs of malfunction, while engine oil monitoring and exhaust smoke observation assist in detecting issues such as hard starting, rough idle, power loss, black smoke, fuel knock, or high fuel consumption. Correct injector specification must be confirmed before installation, and clean storage with careful handling preserves sealing integrity and extends service life.