Caterpillar original 3508B 3512 3516 3516B Diesel Engine Fuel Injector 250-1304, Cross Reference 150-4453, for Construction Machinery, Replacement for OEM 250-1311, 246-1854 original new injector

For fleet managers, maintenance teams and equipment operators relying on Caterpillar 3500 Series diesel power, the 250-1304 fuel injector is a purpose-built replacement component engineered to match original equipment performance standards. It is compatible with CAT 3508B, 3508C, 3512B, 3512C, 3516B and 3516C engines, and supports critical use cases across power generation, marine propulsion, mining, oil and gas operations, heavy construction and industrial pumping. It also carries multiple cross-reference part numbers to simplify global sourcing and part interchange.

Built as an electronic unit injector, the 250-1304 features micron-level machining tolerances to deliver precise fuel metering and optimized injection timing controlled by the engine ECM. Its multi-hole precision nozzle enables superior fuel atomization to boost combustion efficiency, reduce fuel consumption and lower particulate emissions. Constructed from high-strength alloy steel with an anti-corrosion precision coating, it resists wear, high-temperature fatigue and fuel contamination for extended service life, and requires no modification for direct OEM fitment.

Manufactured to OEM specifications and ISO 9001 certified, the injector is available in new, OEM and remanufactured conditions to suit varied budget and operational requirements. It aligns with standard Caterpillar global maintenance and overhaul procedures, comes with a 12-month warranty, and is available worldwide to support consistent equipment performance for industrial operators.