7660148AD | Genuine Mopar® Urea Pump For Ram 2500, 3500

1. Reduce harmful emissions

The urea pump supplies Diesel Exhaust Fluid (DEF) to the exhaust system, where it is used in Selective Catalytic Reduction (SCR).

This process converts harmful gases like nitrogen oxides (NOx) into:

• Nitrogen (harmless)
• Water vapor

• The pump pressurizes and controls the flow of urea fluid
• Ensures the system injects the correct dose into the exhaust

3. Keep the emissions system working properly

• Allows the SCR system to function efficiently
• Prevents system faults and warnings
• Helps maintain engine performance

4. Meet emissions regulations

Modern diesel vehicles must follow strict emissions laws.

The urea pump helps:

• Reduce pollution
• Keep the vehicle legal to operate

5. Prevent engine derate or shutdown

If the urea pump fails:

• The system may limit engine power (derate)
• In some cases, the vehicle may not run properly

1. Warning lights on the dashboard

• DEF system warning
• SCR system malfunction
• Check engine light

2. Reduced engine power (derate)

• Vehicle automatically limits power to reduce emissions output
• Engine feels sluggish or won’t accelerate normally

3. DEF system errors

• Messages like “DEF System Fault” or “Pump Failure”
• Errors persist even after refilling DEF

4. Engine won’t start or runs poorly

• In some modern trucks, severe DEF issues can prevent the engine from starting
• Poor idle, misfires, or stalling may occur

5. Excessive DEF consumption

• Pump may leak or over-inject fluid
• You notice frequent DEF refills or puddles under the vehicle

6. No DEF flow

• A failed pump may not deliver any fluid to the SCR injector
• SCR system can’t reduce NOx emissions, causing faults

7. Unusual noises

• Clicking, buzzing, or whining coming from the DEF pump
• Often indicates electrical or mechanical failure inside the pump