BC345J229AG | Genuine Ford® DEF Tank Urea Pump 6.7L 2011-2019

1. Move DEF from the tank

• The pump draws DEF (urea solution) out of the storage tank and sends it toward the injector.

2. Provide proper pressure

• It pressurizes the fluid so it can be sprayed correctly into the exhaust stream.

3. Ensure accurate dosing

• Works with the engine control system to deliver the exact amount of DEF needed based on engine load and emissions.

4. Enable emissions reduction

• DEF helps convert harmful nitrogen oxides (NOx) into harmless gases (nitrogen and water vapor).

5. Keep the SCR system functioning

• Without the pump, DEF cannot reach the exhaust, and the emissions system won’t work properly.

1. Warning lights or messages

• “Check DEF system” or “Service SCR system” on the dashboard
• Check engine light related to emissions codes

2. Reduced engine power (limp mode)

• Many modern diesel vehicles limit engine power if the SCR system isn’t working to protect emissions compliance

3. DEF fluid not dispensing

• Low or no DEF reaching the injector
• DEF level remains full in the tank, but the system reports empty or malfunction

4. Poor emissions performance

• Increased NOx emissions
• Failed emissions or smog tests

5. Unusual noises

• Whining or buzzing from the DEF pump if it’s struggling or failing

6. DEF crystallization or leaks

• DEF crystallizing around the pump or connections
• Visible leaks from the pump area

7. Trouble starting in some vehicles

• Some systems prevent normal operation if DEF flow is severely restricted