OE Quality
60-Day Returns

Walker 242-1133 Ignition Knock (Detonation) Sensor
Overview of Walker Ignition Knock Sensor 242-1133
The Walker Products Ignition Knock (Detonation) Sensor 242-1133 is designed for precise detection of engine knock in select Audi and Volkswagen vehicles. This sensor helps maintain optimal engine performance by monitoring detonation and sending accurate signals to the engine control unit.
- Compatible with Audi Jetta, Volkswagen Jetta, Volkswagen TT, and Volkswagen TT Quattro models
- Part number 242-1133 ensures exact fit and function
- Designed to detect engine knock and prevent detonation damage
- Manufactured by Walker Products, a trusted name in emission control sensors
About Walker Products Brand Line
Walker Products specializes in emission control components, including sensors that meet OEM specifications for reliable engine management. The Walker Products line focuses on delivering sensors that provide accurate data to the vehicle’s engine control system, supporting emissions compliance and engine efficiency. The 242-1133 ignition knock sensor is part of this line, engineered to maintain proper engine timing and reduce harmful detonation in Audi and Volkswagen vehicles.
Detailed Product Description
The Walker 242-1133 ignition knock sensor is a critical component for monitoring engine detonation in Audi Jetta and Volkswagen Jetta, TT, and TT Quattro models. By detecting abnormal combustion vibrations, it sends signals to the engine control unit to adjust ignition timing accordingly. This helps prevent engine damage caused by knocking and ensures smoother engine operation. The sensor is designed to meet OEM fitment standards, making it a reliable replacement part for maintaining vehicle performance and emissions control.
Common Issues Addressed by This Sensor
- Engine knocking or pinging noises during acceleration
- Reduced engine performance or hesitation
- Check engine light triggered by knock sensor fault codes
- Increased fuel consumption due to improper ignition timing
- Potential engine damage from prolonged detonation
Installation Notes and Tips
- Ensure compatibility with Audi Jetta, Volkswagen Jetta, TT, and TT Quattro before installation
- Disconnect the battery before replacing the sensor to avoid electrical issues
- Use proper torque specifications to avoid sensor damage
- Inspect wiring and connectors for corrosion or damage during installation
- Clear any diagnostic trouble codes after installation to reset the engine control unit
Quality Assurance and Warranty
Walker Products ignition knock sensors are manufactured to meet strict quality standards and OEM specifications. While specific warranty details for part number 242-1133 may vary, Walker Products typically offers coverage against defects in materials and workmanship. Using this sensor helps maintain engine reliability and supports emissions compliance in compatible Audi and Volkswagen vehicles.
This part fits 7 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2002 | Audi | TT Quattro | 1.8L | L4 | N/A | Color-Black; Harness Length 165mm; Walker Products |
| 2001 | Audi | TT | 1.8L | L4 | N/A | Color-Black; Harness Length 165mm; Walker Products |
| 2001 | Audi | TT Quattro | 1.8L | L4 | N/A | Color-Black; Harness Length 165mm; Walker Products |
| 2001 | Volkswagen | Jetta | 1.8L | L4 | N/A | Chassis/VIN 9M-1-075 840, Black color, 165mm harness length; Walker Products |
| 2000 | Audi | TT | 1.8L | L4 | N/A | Fitment Note: From Chassis/VIN 8N-Y-050 001, Black color, 165mm harness length.; Walker Products |
| 2000 | Audi | TT Quattro | 1.8L | L4 | N/A | Fitment Note: From Chassis/VIN 8N-Y-050 001, Black color, 165mm harness length.; Walker Products |
| 2000 | Volkswagen | Jetta | 1.8L | L4 | N/A | Color-Black; Harness Length 165mm; Walker Products |
* 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.