Walker 225-1301 Manifold Absolute Pressure Sensor

Walker 225-1301 Manifold Absolute Pressure Sensor

Walker Products 225-1301 is a manifold absolute pressure sensor for select Mercedes-Benz applications with throttle body mounting. It is built to meet or exceed OEM standards and specifications, with engineering and technical support focused on accurate vehicle application coverage and dependable engine management performance.

Walker Products has supplied fuel system and engine management components since 1946. The Walker Products line includes sensors and related engine control parts backed by ISO 9001/IATF16949-certified manufacturing and product management processes.

• Manifold Absolute Pressure Sensor for engine load and intake pressure monitoring
• Location-specific fitment for throttle body applications
• OE-style replacement for select Mercedes-Benz turbo and performance models
• Walker Products part number 225-1301 for catalog and service reference
• Cross-reference: Bosch 0261230228

Detailed Application Coverage

This MAP sensor is used in select Mercedes-Benz vehicles including SL550, S550, CLS550, E550, GL550, ML550, G63 AMG, and related AMG variants. It supports applications across model years 2011 through 2020, with fitment listed for throttle body locations on the vehicles shown in the catalog data. If you are searching for a Mercedes-Benz SL550 MAP sensor, Mercedes-Benz S550 manifold absolute pressure sensor, or Walker 225-1301 replacement sensor, this part matches those documented applications.

What This Sensor Helps Address

• Incorrect manifold pressure readings
• Rough idle or unstable engine operation tied to load sensing
• Check engine lights related to MAP sensor performance
• Driveability issues caused by inaccurate intake pressure data
• Throttle response concerns on supported Mercedes-Benz applications

Installation Notes and Tips

Verify the original sensor part number, connector style, and throttle body location before ordering. Confirm the exact vehicle year, model, and engine application against the fitment list, especially on AMG and Mercedes-Benz variants with similar names. Inspect the intake tract and electrical connector for damage during replacement, and clear diagnostic trouble codes after installation if required by the repair procedure.

Quality Assurance

Walker Products manufactures engine sensors to meet or exceed OEM standards and specifications. The company supports its products with in-house manufacturing, engineering, product management, and technical documentation processes, and operates under ISO 9001/IATF16949 certification.