DriveWire RM96090003 Downstream Oxygen Sensor Mazda Protege 1.6L 4-Cylinder

The DriveWire RM96090003 is a direct-fit downstream (post-catalytic converter) oxygen sensor engineered as an OEM-quality replacement, cross-referencing original equipment part number ZM0218861A. Designed specifically for the 1.6L 4-cylinder engine, this sensor monitors exhaust gases exiting the catalytic converter, providing critical feedback to the engine control module (ECM) to ensure proper emissions control and fuel efficiency.

Key Features:

• Direct OEM replacement — cross-references Mazda OEM part number ZM0218861A
• Downstream (post-cat) position for accurate catalytic converter efficiency monitoring
• Designed for 1.6L 4-cylinder engine applications
• Helps maintain proper air/fuel mixture feedback and emissions compliance
• Precision-manufactured to meet or exceed original equipment specifications
• Plug-and-play fitment for straightforward installation

Replacing a faulty downstream oxygen sensor restores accurate exhaust monitoring, prevents unnecessary check engine lights (DTCs such as P0136, P0138, P0141), and helps protect your catalytic converter. The DriveWire RM96090003 delivers reliable OEM-level performance at an aftermarket value.