Motorad 1KS1056 Ignition Knock (Detonation) Sensor

Motorad Knock Sensor 1KS1056

The Motorad 1KS1056 ignition knock sensor monitors engine knock frequencies and sends accurate signal data to the ECM for ignition timing control. It is a direct-fit emission control sensor for select Buick, Chevrolet, Oldsmobile, and Pontiac applications, including Chevrolet Impala, Pontiac Grand Am, and Buick Century models.

Key Features

• Measures a wide range of engine knock frequencies for precise ECM input
• Uses a high-quality piezoceramic element built to tight tolerances
• Manufactured to meet or exceed OEM specifications
• Built in ISO TS16949 manufacturing facilities
• Threaded end diameter: 0.25 in.
• Part number: 1KS1056

Detailed Description

Motorad 1KS1056 is an ignition knock (detonation) sensor designed for vehicles that rely on accurate knock detection to manage spark timing and engine performance. By translating engine vibration into a signal the ECM can use, this sensor supports stable ignition control in applications such as 1996-2005 Buick Century, 2000-2005 Chevrolet Impala, and 1996-2005 Pontiac Grand Am. This part cross-references AC Delco 213307 and 2134457 for the same application.

What This Part Helps Address

• Knock sensor fault codes
• Audible spark knock or detonation
• Erratic ignition timing control
• Reduced engine performance from inaccurate knock input
• Check engine light related to knock sensor circuit issues

Installation Notes and Tips

Verify the threaded end diameter and connector style against the original sensor before installation. Confirm the vehicle application by year, make, and model, especially on Chevrolet Impala, Pontiac Grand Prix, and Oldsmobile Alero fitments. Inspect the mounting surface and wiring harness for corrosion or damage before installing the new sensor.

Quality Assurance

Motorad manufactures this knock sensor to meet or exceed OEM specifications using controlled production standards at ISO TS16949 facilities. The piezoceramic sensing element is produced to tight tolerances for consistent signal response and durability.