Cummins QSB 6.7L Fuel Injector 2011-2016: OEM 5303101RX

Restore Fuel Accuracy on Cummins QSB 6.7L (2011–2016)

What is it?
The Cummins QSB 6.7L Fuel Injector OEM 5303101RX is a critical engine component responsible for delivering the correct amount of diesel fuel into the combustion chamber. Operating at high pressure, this injector finely atomizes fuel to support clean combustion, helping your engine run smoothly and consistently across operating conditions.

Why choose OEM 5303101RX?
Built to Cummins’ original specifications for QSB 6.7L engines manufactured between 2011 and 2016, this OEM fuel injector is designed for proper fit and dependable fuel delivery. Choosing an OEM-matched injector helps reduce issues such as rough idle, hard starts, excessive smoke, or inconsistent power delivery, giving you reliability you can trust.

Key Benefits
✅ Designed for Cummins QSB 6.7L engines (2011–2016)
✅ Helps maintain accurate fuel metering
✅ Supports smoother starting and stable engine operation
✅ Built to resist heat, vibration, and fuel contaminants
✅ Direct-fit design for straightforward installation

Applications
This fuel injector is ideal for commercial trucks, service vehicles, and vocational equipment powered by Cummins QSB 6.7L engines from 2011–2016. Common applications include delivery trucks, utility vehicles, construction support equipment, and other diesel-powered machinery that depend on consistent fuel system performance.

Installation Notes
Before installation, allow the engine to cool and clean the injector bore thoroughly. Replace all required seals or O-rings and torque the injector according to manufacturer specifications. After installation, bleed the fuel system to remove air and inspect for leaks prior to full operation.

Final Thoughts
When fuel delivery issues begin affecting your Cummins QSB 6.7L engine, the OEM 5303101RX fuel injector provides a factory-matched replacement solution you can rely on. With dependable fitment and consistent operation, it helps keep your equipment running smoothly. Tamerx has this injector in stock and ready to ship.