Caterpillar original 20R-1262 20R1262 Common Rail Diesel Fuel Injector for C3500B 5130B 5230B Excavator Engine Truck Parts Replacement for OEM original new injector

The Caterpillar 3512B Fuel Injector 20R-1262 is an OEM-specification fuel injection assembly engineered to deliver precise fuel atomization and consistent cylinder pressure across demanding heavy-duty operating environments. Built to original Caterpillar manufacturing tolerances, the injector incorporates a precision nozzle design, high pressure resistant internal components, and heat treated construction that withstands continuous thermal cycling and elevated combustion pressures.

Each injector assembly is produced under ISO certified quality standards and individually leak tested to ensure balanced fuel flow, reliable sealing, and consistent injection performance. The corrosion resistant construction supports extended service life in harsh environments including marine propulsion, surface and underground mining, oil and gas drilling, prime and standby power generation, and heavy industrial equipment. Available in new or remanufactured configurations, the unit installs directly into the cylinder head fuel injection port and functions as a direct replacement for cross reference numbers 20R1262, 10R-0955, and 10R0955.

This fuel injector is compatible with the full range of Caterpillar 3512B engine variants, including the 3512B HD, 3512B Marine, 3512B Generator, and 3512B Industrial configurations. Operators benefit from improved combustion efficiency, higher power output, lower fuel consumption, reduced exhaust emissions, extended engine service intervals, and reliable cold start performance. Proper installation requires clean fuel lines, new sealing washers, complete fuel system bleeding, and verification of injector operation in accordance with Caterpillar service manual torque specifications.