Walker 242-91112 Ignition Knock (Detonation) Sensor

Walker Knock Sensor Full Service Kit

Walker 242-91112 is an OE replacement ignition knock sensor built to monitor engine vibration and detect detonation events in real time. It is engineered for direct fitment on select Hyundai and Kia applications, including Genesis Coupe, Forte, Forte Koup, Optima, Rondo, and Sonata models.

The Walker Full Service Kit line focuses on application-specific coverage and factory-style fitment for repair work that needs accurate knock detection and stable electrical connection. This part number, 242-91112, is tuned to match OE frequency range and output requirements for the listed vehicles.

Key Features

• OE replacement ignition knock (detonation) sensor
• Matches OE specifications for frequency range, sensitivity, and electrical output
• Factory-style female connector with 2 terminals
• Oblong connector shape for application-specific fitment
• Wiring harness included with the sensor assembly
• Heat- and oil-resistant construction for engine-block and cylinder-head environments
• Direct threaded installation into original sensor location

Detailed Description

Walker 242-91112 monitors engine vibration so the ECU can adjust ignition timing when knock is detected. That real-time timing correction helps prevent spark knock, which can lead to reduced fuel economy, drivability concerns, and internal engine damage. This sensor is built for precise signal response on gasoline engines that require accurate detonation control.

Compatible With 2013-2014 Hyundai Genesis Coupe, 2010 Kia Forte, 2010 Kia Forte Koup, 2006-2008 Kia Optima, 2007-2008 Kia Rondo, and 2006 Hyundai Sonata. If you are searching for a knock sensor for a 2010 Kia Forte or a replacement ignition knock sensor for a 2006 Hyundai Sonata, Walker 242-91112 is the OE-style service part to compare.

This part cross-references Standard Ignition KS338 and Beck/Arnley 158-0794 for the same application.

What It Is Used For

• Replacing a failed knock sensor that triggers detonation-related fault codes
• Restoring proper ignition timing control after knock detection faults
• Addressing drivability issues tied to inaccurate engine vibration sensing
• Correcting spark knock concerns on listed Hyundai and Kia engines
• Returning the ECU to normal knock-sensing operation

Installation Notes and Tips

Install Walker 242-91112 in the original threaded sensor location and connect it using the factory-style terminal interface. Verify connector shape, terminal count, and harness routing before installation, and inspect the mounting surface for corrosion, oil contamination, or debris that could affect sensor contact.

For fitment verification, match the vehicle year, make, and model exactly to the listed applications before ordering. This part number, 242-91112, is listed for the vehicles shown above and should be confirmed against the original sensor configuration.

Quality Assurance

Walker Products builds this knock sensor as an OE replacement component with materials selected for heat and oil exposure in engine-bay service. The sensor is engineered to match OE fit and signal characteristics for the listed applications, supporting accurate knock detection and stable engine control.