GPD 1811861 Ignition Knock Detonation Sensor

The GPD 1811861 is a direct-fit ignition knock sensor (also known as a detonation sensor) designed to restore proper engine management function. GPD (Global Parts Distributors) engineers this sensor to meet or exceed original equipment (OE) fit, form, and function standards, making it a reliable replacement for a failed or degraded factory unit.

The knock sensor is mounted on the engine block, cylinder head, or intake manifold, where it continuously monitors for the abnormal vibrations associated with engine pre-ignition and detonation (spark knock or pinging). When knock is detected, the sensor sends a voltage signal to the engine control module (ECM), which adjusts ignition timing and the air/fuel mixture to eliminate the condition and protect the engine from damage.

Key Features:

• Designed to meet or exceed OE fit, form, and function specifications
• 100% tested for durability and performance prior to packaging
• Direct-fit replacement — installs the same as the factory unit
• Helps protect the engine from damage caused by pre-ignition and detonation
• Supports proper ECM ignition timing correction for optimal performance and fuel efficiency
• Backed by GPD's 12-month limited warranty against defects in materials and workmanship

A faulty knock sensor can trigger a Check Engine light, cause retarded ignition timing, reduce fuel economy, and leave the engine vulnerable to detonation damage. The GPD 1811861 provides a professional-quality, cost-effective solution to restore full engine management capability.