Caterpillar original Common Rail Fuel Injector 4336862 Cross Reference 295050-2400 for CAT C7.1 Engine 320 323 326 Excavator Replacement for OEM Components original new injector

The Caterpillar 4336862 (433-6862) is a purpose-built high-pressure common rail diesel injector engineered for Caterpillar C4.4 series diesel engines and related industrial power platforms, with secondary market cross-reference compatibility for CAT C4.2 and C7.1 diesel engines. Manufactured to meet stringent OEM manufacturing standards, it delivers precise fuel metering, optimized combustion efficiency, and superior atomization to support reliable engine performance, fuel economy, low exhaust emissions, strong cold-start capability, fast transient response, and long-term engine durability in demanding operating conditions.

This injector features high-precision CNC machining to ensure consistent injection volume and stable fuel flow across all engine load ranges. It is constructed with heat-treated alloy steel, corrosion-resistant materials, and wear-resistant nozzle components to extend service life and resist fuel contamination. Compatible with modern common rail systems operating at 300 bar to over 2,500 bar, it works in tandem with the engine ECU to adjust injection timing, duration, and quantity for accurate, demand-aligned fuel delivery.

It is suitable for a wide range of heavy-duty applications across construction, earthmoving, agriculture, power generation, mining, material handling, and other off-highway sectors. Delivering stable performance under harsh operating conditions, it supports reduced unplanned downtime for continuous industrial operations. Compatibility must always be verified via engine serial number and original equipment identification records prior to purchase and installation.