Caterpillar original Fuel Injector 304-3637 456-3493 Replacement for OEM 460-8213 20R-5075 Common Rail for Caterpillar C9.3 Engine Loader Excavator Bulldozer Construction original new injector

For B2B buyers sourcing dependable fuel system components for Caterpillar heavy-duty assets, the 304-3637 (3043637) CAT injector is a purpose-built common rail diesel assembly for C9 and C9.3 engine platforms. Operating within high-pressure fuel circuits, it delivers precisely metered diesel and atomizes it into a fine mist to support efficient combustion, stable torque output, reduced exhaust smoke and optimized fuel economy, even under harsh construction, mining and industrial operating conditions.

This injector is associated with a broad set of cross-reference and family search numbers to support catalog matching and inquiry capture, and is commonly specified for fitment on 336E/336F excavators, D6T/D7E dozers, 966K/972K series wheel loaders, plus C9.3-powered generator sets and pump units. As Caterpillar injector configurations vary by emission level, serial number and software calibration, final compatibility must be confirmed via the original injector part number, engine and equipment serial numbers, fuel system setup and injector coding rules before shipment.

Every 304-3637 injector completes rigorous pre-release inspections covering leakage, resistance, spray pattern, flow testing and final visual checks to meet heavy-duty use requirements. Multiple supply options, including new, replacement, aftermarket and remanufactured units, are available based on stock, making the assembly suitable for fleet maintenance, engine rebuilding and global aftermarket distribution channels.