Standard Ignition S-1804 Oxygen Sensor Connector

Oxygen Sensor Connector for Toyota and Lexus

Standard Ignition S-1804 is an oxygen sensor connector built for downstream sensor repairs on a wide range of Toyota, Lexus, Subaru, Scion, and related applications. It uses a 4-wire layout with a male connector, female pin-socket terminals, and a 16-inch harness for clean replacement of damaged or heat-affected wiring.

This part cross-references Premium Guard PT1303 for the same application.

Key Features

• Standard Ignition S-1804 oxygen sensor connector
• Male connector with female pin-socket terminals
• 4-wire configuration for downstream sensor circuits
• 16-inch harness length for repair routing
• Includes butt splices for wire repair connections
• Built with high-grade materials for strong conductivity and secure terminal contact

Detailed Description

Standard Ignition S-1804 is a direct-fit oxygen sensor connector for repairing damaged sensor wiring on many Toyota Camry, Toyota Corolla, Toyota RAV4, Lexus IS350, and Lexus GX460 applications. It is also listed for numerous downstream sensor positions across Toyota 4Runner, Tacoma, Tundra, Avalon, Sequoia, and Lexus models, making it a practical OE-style connector repair for common exhaust and emissions wiring failures. The S-1804 part number is commonly searched for downstream oxygen sensor connector replacement on Toyota and Lexus vehicles.

Standard Ignition builds its pigtails and sockets with materials selected to maintain conductivity and stable electrical connection. The brand’s connector line is developed around technician-focused repair needs, with coverage for many electrical jobs where the original connector has failed from heat, corrosion, or broken terminals. Standard Ignition S-1804 is also cross-referenced to Premium Guard PT1303 for the same application.

Common Repair Uses

• Broken or brittle oxygen sensor connector housing
• Corroded or loose terminal contact at the downstream sensor
• Heat-damaged wiring near the exhaust system
• Intermittent check engine light caused by sensor circuit connection loss
• Failed connector repair on Toyota Camry, Toyota Corolla, Lexus IS350, and similar applications

Installation Notes and Tips

• Match the connector gender, terminal style, and wire count before installation.
• Use the included butt splices to make secure wire-to-wire repairs.
• Route the harness away from exhaust heat and moving components.
• Verify the downstream sensor location and side notes listed for the vehicle before ordering.
• Confirm pin orientation and terminal seating before reconnecting the sensor circuit.

Quality Assurance

Standard Ignition uses high-grade materials and application-focused engineering to support reliable electrical contact in repair environments. The S-1804 is built as a replacement connector for vehicles where the original oxygen sensor plug has failed, with fitment coverage spanning 1991-2024 across listed Toyota, Lexus, Subaru, Scion, Mazda, Pontiac, Saab, Geo, Chevrolet, and Jaguar applications.