Motorad 1KS1103 Ignition Knock (Detonation) Sensor

Motorad 1KS1103 Knock Sensor Overview

The Motorad 1KS1103 ignition knock sensor is built to monitor engine knock frequencies and send accurate condition data to the ECM for ignition timing control. It is a direct-fit emission control sensor for select Chevrolet, GMC, Pontiac, Buick, Oldsmobile, and Isuzu applications, including Chevrolet S10 and GMC Sonoma models.

Designed with a high-quality piezoceramic sensing element and tight manufacturing tolerances, this knock sensor is made to deliver consistent signal response and durability in demanding engine environments. The Motorad 1KS1103 is an OE-style replacement for vehicles that require a round, female connector and a 12.0 mm threaded end diameter.

Key Features

• Ignition knock (detonation) sensor for engine timing feedback
• High-quality piezoceramic sensing element for accurate signal output
• Round, female connector with 1 terminal
• 12.0 mm threaded end diameter
• No wiring harness included
• No mounting hardware included
• OE-spec replacement for select GM and Isuzu applications

Detailed Product Description

The Motorad 1KS1103 is engineered to detect a wide range of knock frequencies and relay that information to the ECM so ignition timing can be adjusted based on actual engine conditions. That signal accuracy matters on vehicles such as the Chevrolet S10, GMC Sonoma, and Pontiac Grand Am, where proper knock sensor performance helps maintain smooth operation and correct engine management. This part cross-references Standard Ignition KS46 for the same application.

With a round connector shape, female terminal design, and single-terminal configuration, the 1KS1103 is built for straightforward electrical connection in the original sensor location. Its compact 2.41 in. length and 12.0 mm threaded end diameter support OE-style fitment on the listed applications. Motorad part number 1KS1103 is designed to meet and exceed OEM specifications for fit and function.

What It Helps Address

• Knock sensor fault codes related to detonation signal loss
• Erratic ignition timing caused by inaccurate knock feedback
• Rough engine operation tied to poor sensor response
• Check engine light concerns from a failing ignition knock sensor
• Driveability issues on Chevrolet S10, GMC Sonoma, and similar listed vehicles

Installation Notes and Tips

Verify connector style, threaded end diameter, and terminal configuration before installation. This sensor does not include a wiring harness or mounting hardware, so reuse or source the correct related components as needed. Confirm the vehicle application carefully, especially for the 1999 Pontiac Grand Am note that specifies without wire lead. For best results, inspect the connector and mounting surface before installing the Motorad 1KS1103.

Quality Assurance

Motorad manufactures this knock sensor with tight tolerances and durable piezoceramic elements to support accurate engine-condition reporting to the ECM. The 1KS1103 is built to meet and exceed OEM specifications for the listed applications.