Caterpillar original Diesel Fuel Injector 250-1306 10R-1288 20R-1270 392-0206 Common Rail Replacement Spare Part, for heavy duty diesel engine application original new injector

For operators maintaining Caterpillar 3500 Series heavy-duty diesel engines, the CAT 250-1306 diesel fuel injector is a precision-engineered fuel system component designed to support reliable, efficient engine performance. Purpose-built for the 3512B engine platform, this high-pressure metering part delivers accurately measured fuel to the combustion chamber, enabling fine atomization, complete combustion, consistent power output, optimized fuel economy and reduced exhaust emissions. It serves as a mission-critical component for maintaining engine reliability and operational efficiency in demanding operating conditions.

This brand-new injector offers broad interchangeability with documented OEM, replacement and cross-reference part numbers, including 326-1643, 10R-7222, 317-7630 and 341-9876 (plus unhyphenated variants), simplifying parts sourcing, ERP database matching and emergency replacement for maintenance and procurement teams. It is compatible with 9 CAT 3500 Series engine models across the 3508, 3512 and 3516 lineups, and supports use cases spanning industrial power generation, mining, marine propulsion, oil & gas facilities and construction machinery.

Manufactured with high-precision CNC processes from hardened alloy steel, the injector delivers exceptional wear, corrosion, high-temperature and fatigue resistance for long service life in continuous-duty industrial applications. Every unit is calibrated to OEM fuel delivery standards, supporting stable operation, improved cold-start performance and lower long-term operating costs. Suitable for engine overhauls, preventative maintenance and fleet servicing programs, it comes with a 12-month warranty to protect buyers’ spare part investments.