Standard Ignition AS489 Manifold Absolute Pressure Sensor Kit

Manifold Absolute Pressure Sensor Kit for Mercedes-Benz

Standard Ignition AS489 is a manifold absolute pressure sensor kit for throttle body-mounted applications on select Mercedes-Benz models. It uses a 3-terminal, plug-in connector with a female connector housing, male blade terminals, and a black finish, with an O-ring included for sealing at the vacuum port.

Use AS489 when servicing Mercedes-Benz SL550, S550, E550, CLS550, G63 AMG, and related models that use a throttle body-mounted MAP sensor. Standard Ignition AS489 is built for direct replacement service where the sensor mounts on or near the throttle body.

Key Features

• Manifold Absolute Pressure Sensor Kit for emission control service
• 3-terminal electrical connection with plug-in connector type
• Female connector housing with male blade terminals
• 1 vacuum port with O-ring included
• Black sensor body finish
• No wiring harness, hardware, or mounting bracket included
• Standard Ignition AS489 cross-references 2-27208 and 0071533128 for the same application

Detailed Description

Standard Ignition AS489 is a throttle body-mounted manifold absolute pressure sensor kit used on a range of Mercedes-Benz vehicles, including SL550, S550, E550, CLS550, GL550, ML550, CL550, and AMG variants such as S63 AMG, E63 AMG, CLS63 AMG, GL63 AMG, ML63 AMG, and G63 AMG. Fitment includes 2011-2020 Mercedes-Benz applications, with notes indicating either throttle body mounted, on throttle body, or located on the throttle body/throttle housing depending on the vehicle.

This part number, AS489, is a direct-fit service option for vehicles that rely on accurate manifold pressure input for engine management and emissions control. The included O-ring supports sealing at the vacuum port, while the 3-terminal plug-in design supports straightforward electrical connection during replacement.

Common Issues This Part May Address

• Fault codes related to manifold pressure sensor signal performance
• Rough idle or unstable engine operation tied to pressure input errors
• Throttle response concerns caused by inaccurate manifold pressure readings
• Driveability issues on throttle body-mounted Mercedes-Benz MAP sensor setups
• Emissions-related warning lights associated with sensor failure

Installation Notes

Verify the sensor location before ordering, since fitment notes vary by model and year and may reference throttle body mounted, on throttle body, or located on the throttle housing. Confirm the connector style, terminal count, and vacuum port layout against the original part before installation. AS489 does not include a wiring harness, hardware, or mounting bracket.

For best results, inspect the sealing surface and replace any damaged vacuum-port seal during service. This part fits 2013-2019 Mercedes-Benz SL550, 2012-2018 Mercedes-Benz CLS550, and other listed Mercedes-Benz applications with the same throttle body-mounted configuration.

Quality Assurance

Standard Ignition is a recognized aftermarket brand for engine management and emission control service parts. AS489 is listed with OE-style interchange references for the same application, including 2-27208 and 0071533128.