Standard Ignition AS143 Fuel Tank Pressure Sensor

Fuel Tank Pressure Sensor for Mazda Protege

Standard Ignition AS143 is an OE replacement fuel tank pressure sensor for select Mazda Protege applications. It is built with a black external housing, a rectangular plug-in female connector, and a 3-blade male terminal layout for direct service replacement on the evaporative emissions system.

Compatible with 1999-2003 Mazda Protege, this fuel tank pressure sensor supports accurate tank pressure monitoring for diagnosis and emissions system operation. Standard Ignition AS143 is a direct-fit service part for vehicles that need a replacement sensor with the correct connector style and mounting bracket configuration.

Key Features

• OE replacement fuel tank pressure sensor
• Fits 1999-2003 Mazda Protege
• External mounting location with included mounting bracket(s)
• Rectangular plug-in female connector
• 3-blade male terminal design
• Black finish
• 2-port sensor configuration

Detailed Description

Standard Ignition AS143 is engineered as an OE-style fuel tank pressure sensor for the evaporative emissions system. It uses a single rectangular connector, male blade terminals, and an external mounting design to match the original service layout on the Mazda Protege. This part number, AS143, is also referenced in aftermarket catalogs for the same application, making it a practical replacement choice when restoring proper tank pressure signal output.

This part cross-references Monroe Shocks & Struts 72731 for the same application.

Common Repair Uses

• Replacing a failed fuel tank pressure sensor on a Mazda Protege
• Addressing evaporative emissions diagnostic trouble codes
• Restoring accurate fuel tank pressure readings
• Correcting connector or terminal mismatch during sensor replacement
• Repairing an external sensor mounted on the fuel system

Installation Notes and Tips

Verify connector shape, terminal style, and mounting location before installation. AS143 is an external sensor with a bracket included, so confirm the original mounting point and port layout match the vehicle before service. Inspect the electrical connector and surrounding evaporative emissions components for corrosion, damaged terminals, or vacuum-related issues that could affect sensor performance.

Quality Assurance

Standard Ignition AS143 is an OE replacement part built to match the original sensor form and connection style for listed Mazda Protege applications. Confirm fitment by year and vehicle configuration before installation.