The Bosch F00N210223 is a genuine OEM fuel metering unit (quantity control valve) for Detroit Diesel DD13, DD15, and DD16 engines. Bosch is the original equipment supplier for this critical fuel system component, which precisely controls fuel quantity delivered to the high-pressure fuel pump. This valve regulates fuel flow to maintain optimal rail pressure, ensuring smooth engine operation, proper fuel economy, and correct emissions performance. A common repair item for trucks experiencing idle surge or rough running conditions.
Signs You Need a New Fuel Metering Unit
- Engine surging or hunting at idle (RPMs fluctuating up and down)
- Rough idle that smooths out when throttle is increased
- Fuel rail pressure fluctuating erratically (desired vs actual not matching in diagnostic software)
- Engine misfires during acceleration
- Loss of power or sluggish throttle response
- Increased fuel consumption without other explanation
- Check engine light with fuel pressure-related fault codes (P0087, P0090)
- Hard starting or extended cranking time
- Erratic control valve amperage readings in Detroit Diesel Diagnostic Link (DDDL)
Specifications
| Manufacturer | Bosch (OEM Supplier) |
|---|---|
| Part Number | F00N210223 |
| Part Type | Fuel Metering Unit / Quantity Control Valve |
| Engine Compatibility | Detroit Diesel DD13, DD15, DD16 |
| Function | Controls fuel quantity to high-pressure fuel pump |
| Weight | 0.81 kg (1.79 lbs) |
| Dimensions | 12.9cm x 13.1cm x 9.6cm (5.08" x 5.16" x 3.78") |
Cross References
This part replaces or is equivalent to the following part numbers:
- Bosch: F00N210223, F00N210196, F00N210381, F00R0P2394, F00R0P2724, F00R0P2727
- Detroit Diesel: A0000900069, EA0000900069, 0000900069, DDE-A0000900069
- PAI Industries: 680348
Engine Applications
This fuel metering unit fits the following Detroit Diesel engines:
- Detroit DD13: 12.8L, 350-505 HP (2008-2023+)
- Detroit DD15: 14.8L, 400-505 HP (2008-2023+)
- Detroit DD16: 15.6L, 475-600 HP (2008-2023+)
Vehicle Applications
The Detroit DD13, DD15, and DD16 engines are found in the following trucks:
- Freightliner Cascadia: 113" BBC and 125" BBC (2008-2023+)
- Freightliner Coronado: (2008-2023+)
- Freightliner 122SD: Severe duty applications (2012-2023+)
- Freightliner 114SD: Severe duty applications (2012-2023+)
- Western Star 5700XE: (2016-2022)
- Western Star 4900: Select configurations (2008-2023+)
How the Fuel Metering Unit Works
The fuel metering unit is mounted on the high-pressure fuel pump (Bosch CP4) and controls the volume of fuel entering the pump. The engine control module (ECM) sends an electrical signal to the metering unit's solenoid, which opens or closes a valve to regulate fuel flow. At idle, less fuel is needed, so the valve restricts flow. Under load, the valve opens wider to allow more fuel into the pump. This precise control maintains the correct fuel rail pressure for optimal combustion. When the metering unit fails or sticks, it cannot regulate fuel properly, causing pressure fluctuations that result in surging, rough idle, and other drivability issues.
Diagnosing a Faulty Metering Unit
Using Detroit Diesel Diagnostic Link (DDDL), technicians can monitor the fuel quantity control valve's amperage. At idle, the desired and actual amperage readings should be smooth and consistent. If the readings are erratic, spiking up and down, the metering unit is likely sticking or failing. Additionally, comparing desired fuel rail pressure to actual fuel rail pressure will show significant variance (for example, desired 400 bar but actual fluctuating between 200-750 bar) when the metering unit is malfunctioning.
Installation Notes
The fuel metering unit is located on the driver's side of the engine, behind the main fuel pump and fuel filter assembly. On some 113" BBC Cascadia models, access may require removal of the fuel/coolant module. Before installation, ensure the high-pressure fuel system is properly depressurized. After replacing the metering unit, prime the fuel system using a priming pump or pressure pot. Clear all fault codes and perform a test drive to verify rail pressure stability at idle and under load. If the engine still surges after metering unit replacement, inspect for air leaks in the fuel supply lines, faulty injectors, or EGR system issues that can cause similar symptoms.
Verify your engine serial number and ECM calibration before ordering. This part fits DD13, DD15, and DD16 engines across multiple model years.
Handling Time
At All Pro Truck Parts we do our best to ship all orders same day for orders placed before 12:00pm Central Standard Time. Same day shipment is never guaranteed. For standard UPS or USPS shipping, you will typically receive your package in 1 - 5 business days. Shipping times are never guaranteed and All Pro Truck Parts is not responsible for lost or delayed shipments by the carrier. Carrier times vary by distance from shipment origin and may change without prior notice. Shipping price is calculated from package dimensions and weight. Calculated rates for orders will be available at checkout. Orders placed after 12:00pm CST on Fridays will not be fulfilled until the following business day, Monday morning barring a holiday.
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