41109 Bosch Knock Sensor 0261231173

Genuine Bosch Knock Sensor 0261231173

Ensure optimal engine performance and protection with the Bosch Knock Sensor 0261231173 (SKU 41-109). This premium OEM-quality knock sensor is engineered by Bosch to detect engine knock (detonation) and provide critical feedback to the engine control unit, ensuring optimal ignition timing, maximum power output, and engine protection. Designed specifically for Porsche 911 and other applications, this sensor ensures dependable engine management system performance and long service life for your Porsche.

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Key Features & Benefits

• Genuine Bosch Quality - OEM-grade component built to exacting standards
• Porsche 911 Application - Designed for Porsche 911 models
• High-Performance Design - Engineered for sports car applications
• Precise Detection - Accurately detects engine knock and detonation
• Engine Protection - Prevents engine damage from detonation
• Optimal Performance - Enables maximum ignition advance for best power
• Improved Fuel Economy - Optimized ignition timing maximizes efficiency
• Reduced Emissions - Proper timing reduces harmful emissions
• Reliable Operation - Consistent performance in all conditions
• Long Service Life - Durable construction for extended reliability

Technical Specifications

• Bosch Part Number: 0261231173
• Component Type: Knock Sensor (Piezoelectric)
• Primary Application: Porsche 911
• Weight: 0.1 kg (approximate)

Vehicle Compatibility

This Bosch knock sensor is compatible with Porsche 911 and other applications. Always verify fitment for your specific vehicle and engine configuration using the part number cross-reference below.

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OEM Part Number Cross-Reference

This Bosch knock sensor replaces the following OEM part numbers:

• 0261231173 (Bosch)
• 99760612100 (Porsche)
• 55187820 (Opel/Vauxhall)
• 24420696 (GM)
• 68070745AA (Chrysler)
• 93177171 (GM)
• 570515209915 (Various)
• OPB905377, OPB905377A, OPB905377B (VW/Audi)
• KNS-109 / KNS109

Common Symptoms of Faulty Knock Sensors

• Check engine light with knock sensor codes (P0325, P0326, P0327, P0328)
• Engine pinging or knocking sounds
• Loss of power during acceleration
• Poor fuel economy
• Engine hesitation or stumbling
• Reduced engine performance
• Engine running in safe mode (retarded timing)
• Increased emissions

What Does a Knock Sensor Do?

The knock sensor is a critical component of your vehicle's engine management system that detects engine knock (detonation or pre-ignition). Mounted on the engine block or cylinder head, the piezoelectric sensor converts vibrations from engine knock into electrical signals. The engine control unit (ECU) monitors these signals and adjusts ignition timing to prevent damaging detonation. When knock is detected, the ECU retards ignition timing to protect the engine. When no knock is present, the ECU can advance timing for maximum power and efficiency. A properly functioning knock sensor allows the engine to operate at optimal ignition timing, maximizing power output while protecting against engine damage from detonation - especially critical in high-performance engines like the Porsche 911.

Why Choose Genuine Bosch Knock Sensors?

Genuine Bosch knock sensors are designed to meet or exceed original equipment specifications, ensuring accurate detection, reliable operation, and long service life. As a world-leading automotive supplier and original equipment manufacturer for Porsche and other major automakers, Bosch engine management components are built to exacting standards with precision engineering and quality materials. Using genuine Bosch sensors ensures proper fitment, maintains your vehicle's engine management system integrity, and provides the reliability you need for worry-free driving.

Installation Notes

Professional installation is recommended for best results. Knock sensor replacement requires disconnecting the battery, locating the sensor on the engine block or cylinder head, disconnecting the electrical connector, and carefully removing the old sensor. Clean the mounting surface before installation. Install the new sensor and torque to manufacturer specifications (typically 15-25 Nm). Reconnect the electrical connector. Clear any diagnostic trouble codes and test drive to verify proper operation. Ensure the sensor is properly torqued as incorrect torque can affect sensor operation.

Why Choose LM15 Motorsport?

We supply genuine Bosch engine management components with fast shipping across Australia. Every knock sensor is carefully inspected to ensure you receive an authentic Bosch component for reliable engine management system performance. Our team has extensive experience with Porsche and high-performance vehicles and can provide expert advice on engine management system maintenance and troubleshooting.

Need help with fitment or installation? Contact our expert team for advice specific to your Porsche 911 knock sensor requirements.