Fitment: for Toyota 4Runner 3.0L 1988-1992 OE Number: 8221989103/5S2371/8961520010 Features:Replace the new knock sensor ensures accurate detection of engine knock, allowing the ECU to optimize ignition timing and fuel supply.New sensor leads to smoother acceleration and better overall engine responsiveness.When the knock sensor works properly, the engine can run at ideal timing without knocking, improving fuel combustion and reducing fuel consumption.The knock sensor is made with heat-resistant and vibration-resistant materials to withstand harsh engine environments.Longer lifespan and greater resistance to corrosion or degradation.Specifications:Type: Ignition Knock (Detonation) SensorMaterial: Plastic, Metal Installation:1. Disconnect the battery.2.
