Original 10R1285 361-9355 250-1313 10R-1285 329-0213 20R-0850 Injector for Cat C12 3500 3508B Excavator Engine Spare original new injector

Engineered for demanding industrial power generation and marine propulsion duty cycles, the 250-1311 diesel fuel injector delivers OEM-standard performance for 3512B, 3512C, 3516B, and 3516C engines within the 3500 Series platform. This high-pressure injector assembly is manufactured to precise dimensional and metallurgical specifications, providing a direct replacement solution for operators of generator drive engines, emergency standby power units, and heavy-duty marine and mining installations worldwide. Cross-reference compatibility includes 10R0957, 10R0958, 10R0960, 190-4976, and 236-3271.

The injector features CNC-machined components with micron-level tolerances and multi-hole nozzle technology that optimizes fuel atomization, combustion uniformity, and transient load response. Internal components undergo specialized heat treatment for wear resistance, while corrosion-resistant materials ensure reliable operation in marine and offshore environments. Designed to withstand extreme injection pressures, the assembly promotes reduced fuel consumption through optimized spray patterns and delivers extended service life across thousands of operating hours in continuous industrial workloads. Each unit meets OEM standards and is backed by a 12-month warranty.

Proper installation is critical: clean the injector bore, inspect the cylinder head seating surface, fit a new sealing washer, lubricate O-rings, and torque to specification before reconnecting fuel lines and performing leak and pressure verification. Common failure causes include contaminated fuel, poor maintenance, excessive operating hours, and improper installation. Available for global supply across North America, South America, Europe, Middle East, Africa, and Asia Pacific markets.