Caterpillar original 229-1631 Diesel Fuel Injector Common Rail High Performance 3512B 3508B 3516B C10 C12 Engine Excavator Dozer Parts Replacement OEM original new original new injector

The CAT 229-1631 Electronic Unit Injector is engineered as a direct-fit fuel injection solution for the Caterpillar 3500 engine family, covering the 3508, 3508B, 3512, 3512B, 3516, and 3516B diesel platforms. Built for high-horsepower industrial and heavy-duty operations, this EUI delivers electronically controlled fuel metering that ensures highly accurate fuel quantities are delivered throughout every combustion cycle. Operators relying on generator sets, marine propulsion engines, mining trucks, oilfield power modules, and locomotive equipment benefit from consistent injection timing, stable cylinder-to-cylinder balance, and dependable engine performance under continuous load conditions.

Manufactured with hardened alloy steel bodies, precision lapped valve assemblies, high-temperature resistant seals, wear-resistant nozzle components, precision-ground nozzle assemblies, and hardened control valves, the 229-1631 is designed to withstand the demanding pressures of high-pressure fuel delivery. The result is improved spray penetration, enhanced atomization quality, and more complete combustion, which collectively support optimum combustion efficiency, lower fuel consumption, and reduced exhaust emissions across heavy industrial environments.

As an OEM-level calibrated replacement injector, the 229-1631 is also referenced under cross numbers including CA2291631, 10R0955, 2113025, 20R2057, 1913005, 1761150, 0R9803, EX630955, 3507555, and 203-7685, allowing distributors and service technicians to source a reliable interchange for fleet maintenance. Its electronically controlled actuation technology and high-pressure fuel metering system are engineered to maximize engine uptime, making the 229-1631 a trusted choice for B2B buyers serving power generation, marine, mining, and oil and gas sectors.