Spectra MP121 Manifold Absolute Pressure Sensor

Manifold Pressure Sensor for Ford Super Duty Applications

The Spectra MP121 manifold absolute pressure sensor is built for direct replacement on select Ford trucks and vans from 1998-2003. It is engineered to meet or exceed OE specifications for fit, form, and function, making it a practical choice for restoring accurate intake manifold pressure readings.

Key Features

• Direct replacement manifold absolute pressure sensor
• OE-style fit, form, and function
• Designed for select Ford E-Series, Excursion, and Super Duty applications
• Supports accurate engine load and air-fuel management inputs
• Part number: MP121

Detailed Description

Compatible with 1998-2003 Ford E-350 Econoline, 1998-2003 Ford E-350 Econoline Club Wagon, 1999-2003 Ford E-350 Super Duty, 2000-2003 Ford Excursion, 1999-2003 Ford F-250 Super Duty, and 1999-2003 Ford F-350 Super Duty, this Spectra MAP sensor is intended for vehicles that rely on precise manifold pressure data for engine control. The MP121 cross-references Standard Ignition AS119 for the same application. If you are replacing a failing MAP sensor on a Ford F-250 Super Duty or Ford E-350 Super Duty, this part number provides a direct-fit service option.

Common Issues It May Address

• Rough idle caused by inaccurate manifold pressure readings
• Hard starting related to incorrect engine load input
• Reduced fuel control from a faulty MAP sensor signal
• Check engine light triggered by manifold pressure sensor faults
• Driveability concerns on Ford E-Series, Excursion, or Super Duty models

Installation Notes and Tips

Verify the connector style and engine application against the vehicle before installation. Inspect the intake manifold vacuum source and wiring harness for damage, corrosion, or contamination before replacing the sensor. After installation, clear diagnostic trouble codes and confirm that live data readings are stable during idle and throttle changes.

Quality Assurance

Spectra manufactures this sensor to meet or exceed OE specifications for fit, form, and function, supporting consistent replacement quality for service work on Ford E-350 Super Duty, Ford Excursion, and Ford F-Series applications.