Cummins QSF4.5, ISF4.5 Fuel Injector 2021-2024: OEM 5364543

Restore Clean, Consistent Fuel Delivery in Your Cummins 4.5L Engine

What Is It?

The OEM 5364543 Fuel Injector is a factory-calibrated injector designed specifically for Cummins QSF4.5 and ISF4.5 diesel engines from 2021 through 2024. This injector is responsible for precisely metering fuel into the combustion chamber, ensuring smooth engine function, efficient fuel use, and emissions system support.

Why Choose OEM 5364543?

The 5364543 injector is engineered to meet Cummins' exact specifications for the QSF4.5 and ISF4.5 platforms. Choosing this OEM part helps maintain consistent engine behavior and avoids the misfires, poor fuel atomization, and compatibility issues often associated with generic replacements.

Key Benefits

✅ Cummins-Certified Fit: Designed for 2021–2024 QSF4.5 and ISF4.5 engine platforms
✅ Accurate Fuel Metering: Delivers consistent injection timing and spray pattern
✅ High-Pressure Durability: Built to withstand extreme operating conditions
✅ Factory-Calibrated: No tuning required—compatible with OEM ECU parameters
✅ Direct Replacement: Installs easily into existing fuel systems with no modifications

Applications

This injector is ideal for use in Cummins-powered industrial, off-highway, and commercial equipment running QSF4.5 or ISF4.5 engines. It is commonly used in construction, agriculture, and material handling machinery where reliable engine operation is mission-critical.

Installation Notes

Professional installation is recommended to ensure optimal fit and function. Inspect fuel lines, injector seals, and the cylinder head for wear or contamination. Always use new sealing washers and follow proper torque specs. A system scan may be required post-installation to clear codes and confirm performance.

Final Thoughts

The OEM 5364543 Fuel Injector is a dependable solution for restoring accurate fuel delivery in Cummins QSF4.5 and ISF4.5 engines. With its precise fitment and factory-grade quality, this injector supports clean combustion and long-lasting engine reliability in demanding environments.