OE Quality
60-Day Returns

Standard Ignition KS138 Ignition Knock (Detonation) Sensor
Overview of Standard Ignition KS138 Knock Sensor for Honda S2000
The Standard Ignition KS138 Ignition Knock (Detonation) Sensor is designed specifically for the Honda S2000, providing reliable detection of engine knock to optimize performance and protect engine components. This sensor features a screw-in mounting type and a direct attachment method for secure installation.
- Compatible with Honda S2000 models
- Part number KS138 for precise identification
- Screw-in mounting type with M12 x 1.25 thread size
- Single female connector with square plug-in design
- One male blade terminal for secure electrical connection
- Direct attachment method ensures accurate sensor readings
- Mounting hardware not included
Detailed Product Description
The Standard Ignition KS138 knock sensor is engineered to detect engine detonation or knocking in Honda S2000 vehicles. It features a single terminal with a male blade type and a female square-shaped plug-in connector, ensuring compatibility with the vehicle's wiring harness. The sensor mounts directly to the engine block using a screw-in method with an M12 x 1.25 thread size, providing a stable and precise fit. This direct attachment method allows the sensor to accurately monitor vibrations caused by engine knock, enabling the engine control unit to adjust ignition timing accordingly.
Common Applications and Issues Addressed
- Detects engine knock or detonation to prevent engine damage
- Helps maintain optimal ignition timing for performance and efficiency
- Prevents engine misfires related to knock sensor failure
- Reduces risk of increased emissions due to improper combustion
- Supports smooth engine operation and fuel economy
Installation Notes and Tips
- Ensure the engine is cool before installation to avoid injury
- Use the correct M12 x 1.25 thread size for proper mounting
- Do not reuse old mounting hardware; new hardware is recommended (not included)
- Verify connector orientation: female square plug-in connector mates with male blade terminal
- Torque sensor to manufacturer specifications to avoid damage
Quality Assurance and Warranty
Standard Ignition parts are manufactured to meet or exceed OEM specifications for fit, form, and function. The KS138 knock sensor undergoes rigorous testing to ensure durability and reliable performance in Honda S2000 vehicles. While mounting hardware is not included, the sensor itself is backed by Standard Ignition's quality standards. Please refer to Standard Ignition's warranty policy for specific coverage details.
| Brand | Standard Ignition |
|---|---|
| Part Number | KS138 |
| Attachment Method | Direct |
| Connector Gender | Female |
| Connector Shape | Square |
| Connector Type | Plug In |
| Mounting Type | Screw-in |
| Terminal Gender | Male |
| Terminal Type | Blade |
| Thread Size | M12 x 1.25 |
This part fits 6 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2005 | Honda | S2000 | 2.2L | L4 | N/A | |
| 2004 | Honda | S2000 | 2.2L | L4 | N/A | |
| 2003 | Honda | S2000 | 2.0L | L4 | N/A | |
| 2002 | Honda | S2000 | 2.0L | L4 | N/A | |
| 2001 | Honda | S2000 | 2.0L | L4 | N/A | |
| 2000 | Honda | S2000 | 2.0L | 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.