original 20R-1318 Diesel Common Rail Injector Excavator Part for Cat C9.3 336E 972K 456-3588 460-8213 new injector original new injector

The 20R-1318 Original Reman fuel injector is engineered specifically for the C9.3 diesel engine, a 9.3L class inline 6-cylinder power unit equipped with a high-pressure common rail fuel system. As a direct-fit component for the 336E, 336E L, and 336E LN excavator series, this injector delivers precise diesel fuel metering, controlled injection timing, and stable spray atomization to support efficient combustion, strong torque output, reliable starting performance, and controlled emissions in heavy-duty construction and earthmoving applications.

Designed to provide same-as-new performance and reliability at a lower cost while reducing environmental impact, the 20R-1318 reman injector is built to meet OE specifications and is available through the reman and rebuild market. Precision-machined internal components ensure accurate fuel delivery, fine atomization, and consistent cylinder balancing, helping restore lost power, rough idle, excessive fuel consumption, and poor acceleration commonly caused by worn or contaminated injectors. Each unit is quality tested and supplied in clean sealed packaging to protect against contamination during storage and installation.

Proper maintenance is critical to injector service life. Operators should use clean diesel fuel, replace fuel filters on schedule, drain the water separator regularly, inspect for external injector leakage, monitor engine oil for fuel dilution, and scan for diagnostic trouble codes. During major overhauls, spray pattern and flow bench testing is recommended. Replacement seals and contaminated fuel lines should be changed at the same time. Cross reference numbers include 304-3637, 382-0709, 392-9046, 456-3509, 456-3589, 324-5467, 367-4293, 363-0493, 456-3493, 456-3544, 20R-5036, 20R-5079, 460-8213, 342-5487, and 417-3013, supporting global parts searchability across North America, Europe, the Middle East, Africa, Southeast Asia, South America, and Australia.