Standard Ignition S2481 Ignition Knock (Detonation) Sensor Harness

Ignition Knock Sensor Harness for Nissan and Mercury

Standard Ignition S2481 is an ignition knock sensor harness built for direct-fit service on select Nissan and Mercury applications. It uses a 2-wire layout with female and male connectors, an oval connector shape, and weatherproof sealed construction to support a secure electrical connection in the engine bay.

Key Features

• Fits 1999-2004 Nissan Frontier, N/A
• Fits 2000-2004 Nissan Xterra, N/A
• Fits 1999-2002 Mercury Villager, N/A
• Fits 1999-2002 Nissan Quest, N/A
• EPDM material for durable harness construction
• 2-wire, 18-gauge design with blade terminals
• Female + male connectors with 2 connector points
• Weatherproof sealed construction for protected connections

Detailed Description

Standard Ignition S2481 is an ignition knock (detonation) sensor harness used to restore the electrical link between the knock sensor and the engine management system. The harness is built with EPDM insulation, 18-gauge wire, and blade-style terminals to support a clean connection in the ignition circuit. This part cross-references 241677B200 and EC2393 for the same application. Standard Ignition S2481 is a practical replacement for vehicles that need a sealed harness connection in the knock sensor circuit, including Nissan Frontier, Nissan Xterra, Nissan Quest, and Mercury Villager applications.

What It Helps Address

• Intermittent knock sensor signal loss
• Damaged, brittle, or heat-aged harness insulation
• Corroded or loose connector terminals
• Engine warning lights related to detonation sensor circuit faults
• Rough engine operation caused by poor sensor communication

Installation Notes and Tips

Verify connector shape, terminal style, and wire count before installation. Route the harness away from hot exhaust components and moving parts, and inspect the mating connectors for corrosion or bent terminals before reconnecting. Confirm the vehicle application by year and model, especially on 1999-2004 Nissan Frontier, 2000-2004 Nissan Xterra, 1999-2002 Nissan Quest, and 1999-2002 Mercury Villager.

Quality Assurance

Standard Ignition S2481 is built as a weatherproof sealed replacement harness for ignition knock sensor service. Its EPDM construction and sealed connector design support dependable electrical continuity in demanding underhood conditions.