Airtex 5S12485 Knock (Detonation) Sensor - Ignition Knock Sensor

The Airtex 5S12485 Knock (Detonation) Sensor is a replacement ignition knock sensor. It monitors engine vibration and sends a signal to the engine control module (ECM). The ECM uses that signal to adjust ignition timing and help prevent damaging detonation (engine knock). Replace a failed knock sensor to restore proper timing control and engine performance. Symptoms of a bad sensor include a check engine light, reduced power, or poor fuel economy.

Key Features:

• Replacement knock (detonation) sensor, also called a knock sensor or detonation sensor
• Helps the engine management system detect pre-ignition and detonation
• Airtex knock sensors use sintered piezoceramic elements, overmolded plastic construction and silicone internal seals for moisture resistance, according to Airtex's description of its knock sensor line
• Chromate-plated metal body to resist corrosion, according to Airtex's description of its knock sensor line

Cross-References:

• Airtex / Wells 5S12485
• Standard Motor Products KS383
• NGK / NTK ID0033
• BWD S8983
• Echlin DKS823
• Duralast SU13900
• OE references: Hyundai 392502G000, 392502G100; Kia 392502G200

A direct-fit replacement like this helps keep the ignition system running accurately and protects the engine from knock-related damage.