Cummins injector cups are small but critical components in diesel engines, acting as a seal between the fuel injector and the cylinder head. They prevent coolant and oil from mixing with fuel while maintaining proper injector alignment.
Over time, injector cups can crack or wear out due to heat and pressure, leading to leaks, poor engine performance, or even injector failure. Regular inspection and timely replacement are essential to avoid costly engine damage.
If you notice coolant loss, fuel contamination, or misfires, your injector cups might need attention. Always use high-quality replacements to ensure longevity and performance.