Ignition Knock (Detonation) Sensor Compatible with 19992004 Mercury, Nissan Frontier, Nissan Pathfinder, and Nissan Quest Ensure engine performance and protection with this precisionengineered knock sensor. Designed to accurately detect detonation (knocking) inside the engine, it allows the ignition timing to be advanced safely for maximum efficiency. Key Features and Benefits: Direct Thread Connection: Designed for secure, easy installation into the engine block or cylinder head. Enhanced Engine Performance: Helps maintain ignition timing, improving fuel efficiency and engine responsiveness. Durable Construction: Made with quality hose material that is lightweight, corrosionresistant, and built for longlasting use. Fit: Engineered to match your vehicle's original equipment specifications for reliable compatibility. Hassle Installation: Straightforward replacement process requiring minimal tools and no modifications. Specifications: Fitment: 19992004 Mercury, Nissan Frontier, Nissan Pathfinder, Nissan Quest Material: quality hose Connection Type: Threaded Practical Applications: 1. Daily Driving: Maintain smooth acceleration and reliable performance during everyday commutes. 2. Heavy Loads: Protect your engine while towing or carrying heavy cargo, preventing harmful detonation under stress. 3. Long Road Trips: Keep your engine running at peak efficiency for consistent, worry travel. This knock sensor is designed to deliver dependable detection, helping prevent engine damage while optimizing performance for the specific compatible models listed.