GPD 1811791 Ignition Knock Detonation Sensor

The GPD 1811791 is a direct-fit replacement ignition knock sensor (also known as a detonation sensor) engineered to restore proper engine management function. GPD (Global Parts Distributors) has been a trusted name in automotive replacement parts since 1974, supplying quality components that meet or exceed original equipment standards.

The knock sensor is typically mounted on the engine block, cylinder head, or intake manifold. Its primary function is to detect abnormal engine vibrations caused by pre-ignition or detonation—commonly referred to as engine knock or ping. When the sensor detects these vibrations, it sends a signal to the engine control module (ECM), which adjusts ignition timing to protect the engine from damage.

Key Features:

• Designed to meet or exceed OE fit, form, and function
• Direct-fit replacement — no modifications required
• 100% tested for durability and performance
• Professional-grade quality construction
• Restores proper ignition timing control and engine protection
• Backed by GPD's one-year limited warranty against defects in material and workmanship

Replacing a faulty knock sensor promptly can prevent the ECM from retarding ignition timing unnecessarily, which can result in reduced power, poor fuel economy, and potential long-term engine damage. The GPD 1811791 provides a reliable, cost-effective solution to restore your vehicle's ignition system to factory performance.