John Deere Doser DEF Pump 2015-2020: OEM MIA885631

Reliable DEF Delivery: John Deere Doser DEF Pump (2015–2020), OEM MIA885631 

What is it?
The John Deere Doser DEF Pump OEM MIA885631 is responsible for delivering the correct amount of Diesel Exhaust Fluid (DEF) to the aftertreatment system in John Deere models from 2015 to 2020. It ensures consistent DEF pressure and solution flow for cleaner combustion cycles.

Why go with this OEM DEF Pump?
Specifically matched to John's system requirements and factory calibration, this pump plugs in with no modifications needed. By choosing the OEM component, you're avoiding hesitation, under-dosing, or fault codes that often come with mismatched or aftermarket units.

Key Benefits
✅ OEM match for John Deere machinery (2015–2020 models)
✅ Regulates consistent DEF pressure and flow
✅ Supports continuous performance—even during extended operation
✅ Withstands system stress from heat, vibration, and fluid exposure
✅ Helps prevent DEF-related warnings, limp-mode scenarios, and downtime

Applications
Ideal for John Deere tractors, harvesters, and stationary equipment manufactured between 2015 and 2020, using DEF delivery for SCR systems. Keeps your equipment operating smoothly under frequent load variations and long-duty cycles.

Installation Notes
Shut down the engine and relieve pressure in the DEF system before beginning. Locate and remove the old doser pump, ensuring all lines are clear of debris. Install the new OEM pump using factory fittings, tighten to spec, and prime the system. Once installed, run diagnostics and check for steady DEF pressure and absence of fault codes.

Final Thoughts
If your John Deere machine is showing DEF delivery problems, dosing faults, or SCR faults, replacing the pump with this OEM DEF Doser value is your way to restore balance and uptime. It's a guaranteed fit for compatibility and durability—ready to ship from Tamerx.