FiTech 70050-15 LS1 Knock Sensor Harness

FiTech's 70050-15 is a dedicated knock sensor sub-harness (extension harness) specifically for Gen III LS engines with front-mounted knock sensors, such as LS1, LS2, LS6, and compatible variants. This plug-and-play wiring harness connects the engine's knock sensors directly to your FiTech Ultimate LS EFI system or compatible FiTech ECU, enabling accurate detection of engine knock/detonation for automatic timing retard, enhanced safety, and optimized performance-essential in high-compression, boosted, or performance-tuned LS applications. A perfect replacement or upgrade for reliable, factory-style knock control integration.

Key Features

• LS1/LS2-Specific Design - Tailored for Gen III LS engines (LS1, LS2, LS6, etc.) with front/block-mounted knock sensor locations
• Plug-and-Play Connection - Directly links knock sensors to the FiTech ECU harness for seamless, accurate detonation monitoring
• Knock Protection and Tuning - Allows real-time knock sensing so the system can retard timing automatically, safeguarding your engine under heavy load or boost
• High-Quality Build - Durable wiring and connectors engineered for automotive heat, vibration, and long-term reliability in performance setups
• Simple Replacement/Addition - Easy bolt-on install as a direct swap or upgrade for FiTech Ultimate LS kits, restoring or adding full knock detection without custom wiring