4 PCS Rubber Expansion Plug, Expandable Freeze Plugs Fit Hole Size 3/4 Inch to 7/8 Inch (19mm -22mm), Automotive Engine Neoprene Expansion Plug Replacement, Car Accessories

Specification:Material: Neoprene, MetalQuantity: 4 PCSColor: BlackWeight: 0.3 lbSize: 3/4×4/5; 7/8×4/5; 1×4/5; 1-1/4×4/5; 1-3/8×4/5 inchesFeature: Practical, Durable, SecureFurther product benefits:-Each set contains four expansion plugs, providing a sufficient quantity for maintenance.-The hex nut design ensures that the plug remains firmly in place without loosening over time.-The plug remains functional across a wide range of temperatures, suitable for year-round use.

• Effective Sealing: These plugs are designed to tightly seal engine block holes and maintain pressure within the cooling system. They help minimize the risk of coolant freezing and expanding in low temperatures, which can otherwise cause damage to engine ports or internal components
• Durable Construction: This expansion plug consists of high-quality neoprene rubber and metal parts, combining flexibility and structural stability. The rubber part has good flexibility and is not easy to crack or deform, while the metal part provides stable structural support
• Multiple Sizes: This product is available in five different sizes, each suitable for different hole diameters. These include 3/4 to 7/8 inch (19–22mm), 7/8 to 1 inch (22–25mm), 1 to 1-1/8 inch (25–28mm), 1-1/4 to 1-3/8 inch (31–34mm), and 1-3/8 to 1-1/2 inch (34–38mm), ensuring a secure fit
• Easy Installation: Replacing the rubber expandable plugs is simple and does not require specialized equipment. First, remove the worn or damaged plug from the engine block using a wrench or socket. Then, insert the new neoprene plug into the hole and tighten the hex
• Wide Application: This plug is designed for compatibility with a wide range of engine types and mechanical systems. It is commonly used in vehicles such as sedans, trucks, tractors, and more. Whether for personal maintenance or professional repair work, it offers a flexible sealing option