OE Quality
60-Day Returns

Standard Ignition KS378 Ignition Knock (Detonation) Sensor
Reliable Ignition Knock Sensor for Honda Vehicles
The Standard Ignition KS378 Ignition Knock (Detonation) Sensor is designed to accurately detect engine knock and help optimize ignition timing. Compatible with Honda City, CR-Z, Fit, and Insight models, this sensor ensures your vehicle maintains efficient performance and emission control.
- Compatible with Honda City, CR-Z, Fit, and Insight models
- Screw-in mounting type with M12 x 1.25 thread size for secure installation
- Oval-shaped female connector with one male blade terminal
- Attachment method: screw-on for reliable sensor placement
- Terminal quantity: 1, designed for precise signal transmission
- Mounting hardware not included
Technical Details and Sensor Attributes
The KS378 ignition knock sensor from Standard Ignition features a screw-in mounting type with a thread size of M12 x 1.25, ensuring a secure and stable fit on compatible Honda engines. The sensor uses a single blade terminal with a female oval-shaped connector, facilitating straightforward electrical connections. Its screw-on attachment method provides a firm hold, minimizing the risk of sensor movement or disconnection during engine operation. Note that mounting hardware is not included, so ensure you have the necessary screws for installation.
Purpose and Common Applications
This ignition knock sensor is essential for detecting engine detonation or knocking, allowing the engine control unit (ECU) to adjust ignition timing accordingly. Proper function of this sensor helps maintain engine efficiency and reduces harmful emissions.
- Detects engine knock to prevent damage
- Helps optimize ignition timing for fuel efficiency
- Reduces harmful emissions by improving combustion control
- Prevents engine performance issues related to detonation
- Supports emission control compliance in Honda vehicles
Installation Notes and Tips
When installing the Standard Ignition KS378 sensor, ensure the mounting surface is clean and free of debris. Use the correct M12 x 1.25 screw to secure the sensor firmly in place. Connect the female oval-shaped connector to the corresponding male blade terminal carefully to avoid damage. Since mounting hardware is not included, prepare the appropriate screws before installation. Follow your vehicle’s service manual for torque specifications and sensor location.
Quality Assurance and Warranty
Standard Ignition parts are manufactured to meet or exceed OEM specifications, providing reliable performance and durability. The KS378 ignition knock sensor undergoes rigorous quality control to ensure consistent operation. Please refer to Standard Ignition’s warranty policy for coverage details.
| Brand | Standard Ignition |
| Part Number | KS378 |
| Attachment Method | Screw-On |
| Connector Gender | Female |
| Connector Shape | Oval |
| Mounting Type | Screw-in |
| Terminal Gender | Male |
| Terminal Type | Blade |
| Thread Size | M12 x 1.25 |
This part fits 24 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2017 | Honda | City | 1.5L | L4 | N/A | |
| 2017 | Honda | Fit | N/A | |||
| 2016 | Honda | City | 1.5L | L4 | N/A | |
| 2016 | Honda | Fit | N/A | |||
| 2015 | Honda | City | 1.5L | L4 | N/A | |
| 2015 | Honda | Fit | N/A | |||
| 2014 | Honda | City | 1.5L | L4 | N/A | |
| 2014 | Honda | Fit | N/A | |||
| 2013 | Honda | City | 1.5L | L4 | N/A | |
| 2013 | Honda | CR-Z | N/A | |||
| 2013 | Honda | Fit | N/A | |||
| 2013 | Honda | Insight | N/A | |||
| 2012 | Honda | City | 1.5L | L4 | N/A | |
| 2012 | Honda | CR-Z | 1.5L | L4 | N/A | |
| 2012 | Honda | Fit | N/A | |||
| 2012 | Honda | Insight | 1.3L | L4 | N/A | |
| 2011 | Honda | City | 1.5L | L4 | N/A | |
| 2011 | Honda | CR-Z | 1.5L | L4 | N/A | |
| 2011 | Honda | Fit | 1.5L | L4 | N/A | |
| 2011 | Honda | Insight | 1.3L | L4 | N/A | |
| 2010 | Honda | City | 1.5L | L4 | N/A | |
| 2010 | Honda | Fit | 1.5L | L4 | N/A | |
| 2010 | Honda | Insight | 1.3L | L4 | N/A | |
| 2009 | Honda | Fit | 1.5L | L4 | N/A |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.