3 PCS 3 Prong Plug Protector, Engine Block Heater Wire Plug Stereo Insulated Weatherproof Cover, 120 Volt Extension Harness Silicone Cover, for Most Cars Trucks Repair Accessories (Black)

Precisely matches the size and shape of the 3-pin plug to ensure that your engine block heater always operates normally even in bad weatherInsulating silicone cover, three-dimensional design, completely wraps the plug to reduce the risk of fireOverall length is 5.9 inches, snap-on installation, not easy to loosen

• Silicone Material: The protective cover is made of high-strength, flame-retardant engineering plastics, which is insulated and heat-resistant, fearless of external conditions, and reduces the risk of fire. It is also resistant to aging and can be used stably for a long time.
• Safety Protection: The silicone cover has a three-dimensional design and is completely wrapped to effectively avoid dust, water stains, and foreign objects from entering the plug, avoiding safety hazards such as short circuits and leakage.
• Precise Adaptation: The plug cover accurately matches the size and shape of the 3-pin plug, and is compatible with the American standard three-pin plug. It can fit seamlessly to ensure the protection effect and good versatility.
• Product Parameters: The package includes 2 3-pin plug protective covers with an overall length of 5.9 inches, which tightly cover the extension harness to ensure that your engine block heater can always operate normally in bad weather.
• Convenient Installation: The protective cover adopts a snap-on design. When installing, you only need to align the protective cover with the plug and gently snap it in. No tools are required, and the operation is simple and quick.