Standard Ignition AS637 Manifold Absolute Pressure Sensor

Manifold Absolute Pressure Sensor for Ford and Lincoln

Standard Ignition AS637 is a direct-fit manifold absolute pressure sensor for a wide range of Ford and Lincoln applications. It is built to deliver accurate intake manifold pressure readings and OE-style electrical connection for straightforward replacement service.

Key Features

• Direct-fit OE replacement for proper fit, form, and function
• Measures pressure inside the intake manifold for engine management input
• OE-matching connector and terminals for exact-fit harness connection
• Female connector with plug-in type and 4 male blade terminals
• Designed and manufactured with controlled quality processes for durability and consistent performance

Detailed Description

This Standard Ignition manifold absolute pressure sensor, part number AS637, is engineered for accurate pressure sensing in the intake system. It supports engine control on applications such as Ford F-150, Ford Edge, Ford Explorer, Ford Transit-150, and Lincoln Navigator by providing the pressure signal the powertrain control system uses for fuel and air calculations. The OE-style connector design helps maintain a secure electrical interface, while the direct-fit construction supports clean replacement on the original mounting location.

This part cross-references Spectra Premium MP172 for the same application.

Vehicle Fitment

• Fits 2015-2025 Ford F-150, N/A
• Fits 2024 Ford Bronco Sport, N/A
• Fits 2015-2024 Ford Edge, N/A
• Fits 2018-2024 Ford Expedition, N/A
• Fits 2024 Ford Explorer, N/A, On Intake Manifold
• Fits 2024 Ford Ranger, N/A
• Fits 2024 Ford Transit-150, N/A
• Fits 2015-2019 Ford Transit-150, N/A
• Fits 2020-2024 Ford Transit-250, N/A, Located on Intercooler Piping
• Fits 2020-2024 Ford Transit-350, N/A, Located on Intercooler Piping
• Fits 2020-2024 Ford Transit-350 HD, N/A, Located on Intercooler Piping
• Fits 2020-2024 Lincoln Aviator, N/A
• Fits 2019-2024 Lincoln Nautilus, N/A
• Fits 2018-2024 Lincoln Navigator, N/A
• Fits 2021-2023 Ford Bronco Sport, N/A, On Intake Manifold
• Fits 2020-2023 Ford Explorer, N/A
• Fits 2020-2023 Ford Transit-150, N/A, Located on Intercooler Piping
• Fits 2020-2022 Ford Escape, N/A, On Intake Manifold
• Fits 2017-2020 Lincoln Continental, N/A, Located on Intercooler Piping
• Fits 2017-2020 Lincoln MKZ, N/A
• Fits 2018-2019 Ford Fusion, N/A, Located on Intercooler Piping
• Fits 2015-2019 Ford Transit-250, N/A
• Fits 2015-2019 Ford Transit-350, N/A
• Fits 2015-2019 Ford Transit-350 HD, N/A
• Fits 2016-2018 Lincoln MKX, N/A
• Fits 2017 Ford F-150, N/A, Located on Intercooler Piping
• Fits 2017 Ford Fusion, N/A

Common Replacement Symptoms

• Incorrect manifold pressure readings in the engine control system
• Rough idle or unstable engine operation related to sensor input
• Check engine light triggered by MAP sensor circuit faults
• Driveability concerns tied to air-fuel calculation errors
• Hard starting or poor throttle response on affected Ford and Lincoln vehicles

Installation Notes

Verify the connector style, terminal layout, and sensor location before installation. This AS637 uses a female plug-in connector with four male blade terminals, so the harness connection should match the OE configuration. Confirm whether the sensor mounts on the intake manifold or on intercooler piping for the specific vehicle application before service.

Quality Assurance

Standard Ignition manufactures this sensor with controlled quality processes throughout production to help maintain consistent fit and performance. The OE-style design and matched electrical connection support reliable replacement service on Ford and Lincoln applications.