Genuine GM Knock Sensor 2131576

Ensure optimal engine performance and prevent detonation damage with the GM Knock Sensor 2131576 (SKU 41-046). This premium OEM-quality knock sensor is engineered by General Motors to detect engine knock and detonation, allowing your ECU to adjust ignition timing for maximum power, fuel efficiency, and engine protection for GM vehicles.

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Key Features & Benefits

• Genuine GM Quality - OEM-grade component built to exacting standards
• Precise Knock Detection - Accurately detects engine knock and detonation
• Engine Protection - Prevents damage from pre-ignition and detonation
• Optimized Performance - Allows ECU to maximize ignition timing for best power
• Enhanced Fuel Efficiency - Proper timing adjustment improves fuel economy
• Durable Construction - Built to withstand extreme temperatures and vibration
• Direct Replacement - Perfect fit for compatible GM vehicles
• Easy Installation - Plug-and-play replacement for original sensor

Technical Specifications

• GM Part Number: 2131576
• Component Type: Knock Sensor (Detonation Sensor)
• Primary Application: GM vehicles
• Weight: 0.25 kg

Vehicle Compatibility

This GM knock sensor is compatible with various GM vehicles. Always verify fitment for your specific vehicle.

CLICK HERE TO CHECK IF THIS FITS YOUR VEHICLE.

OEM Part Number Cross-Reference

This GM knock sensor replaces the following OEM part numbers:

• 2131576 (GM)
• 12623730 (GM)
• 12570125 (GM)
• KNS046 / KNS-046

Common Symptoms of Faulty Knock Sensors

• Check engine light illuminated (P0325-P0334 codes)
• Engine knocking or pinging noise
• Poor acceleration or loss of power
• Reduced fuel economy
• Engine hesitation or stumbling
• Rough idle or engine vibration
• Pre-ignition or detonation under load
• Reduced engine performance

What Does a Knock Sensor Do?

The Knock Sensor detects abnormal combustion (engine knock or detonation) by monitoring vibrations in the engine block. When knock is detected, it sends a signal to the engine control unit (ECU), which retards ignition timing to prevent engine damage. This allows the ECU to run the engine at optimal timing for maximum performance while protecting against destructive detonation. A properly functioning knock sensor is essential for engine longevity, performance, and fuel efficiency.

Why Choose Genuine GM Knock Sensors?

Genuine GM knock sensors are designed to meet or exceed original equipment specifications, ensuring accurate knock detection, long-lasting reliability, and optimal engine protection. Using genuine parts ensures proper fitment and maintains your vehicle's performance standards.

Why Choose LM15 Motorsport?

We supply genuine GM knock sensors with fast shipping across Australia. Every part is carefully inspected to ensure you receive the exact component your vehicle needs for reliable performance and engine protection.

Need help with fitment or installation? Contact our expert team for advice specific to your GM vehicle.