Carleef Rubber Freeze Plug Iron Expansion Black

Description

Product Overview

The Carleef Rubber Freeze Plug is engineered as a precision six‑layer expansion plug designed for automotive cooling systems. Each plug combines a hexagonal iron nut, a central iron sheet, a high‑elasticity rubber gasket, an iron chassis, an O‑sealing ring, and a protective outer iron layer. This construction delivers superior sealing, temperature resistance, and structural strength. Available in black, the plugs measure 1.56″W x 1.42″H and weigh 0.4 lb, making them compact yet robust for engine applications.

Usage

These plugs are ideal for replacing worn or damaged expansion plugs in passenger cars, light trucks, and small engines. They protect coolant passages from freezing, pressure loss, and corrosion, ensuring reliable engine operation in cold climates. Install them during routine maintenance, coolant system repairs, or when upgrading to a more resilient seal. Suitable for DIY enthusiasts and professional mechanics alike.

Why Choose Us

Carleef leverages premium materials and a patented six‑layer design that outperforms standard rubber plugs. The galvanized iron core resists rust, while the rubber gasket maintains elasticity across temperature extremes. Each pack includes six different sizes (3/4″, 7/8″, 1″, 1‑1/8″, 1‑1/4″) to cover holes from 19 mm to 34 mm, eliminating the need for multiple purchases. Our products are backed by a 4.3‑star rating from 25 verified customers, reflecting consistent performance and satisfaction.

Key Features

• Six‑layer construction for maximum seal integrity
• Premium rubber gasket offers high elasticity and temperature resistance
• Galvanized iron core prevents corrosion and enhances durability
• Includes five sizes to fit 19‑34 mm engine holes
• Easy installation – replace old plug without special tools

FAQ

What sizes are included in the package?

The package contains five plugs: 3/4″ (fits 19‑22 mm), 7/8″ (22‑25 mm), 1″ (25‑28 mm), 1‑1/8″ (28‑31 mm), and 1‑1/4″ (31‑34 mm).

Can these plugs be used on diesel engines?

Yes, the plugs are compatible with both gasoline and diesel engine cooling systems, provided the hole size matches the plug dimensions.

How do I install the plug correctly?

Remove the old plug, clean the area of metal filings and debris, then press the new plug firmly into the hole until the iron nut seats securely.

Are the plugs resistant to high coolant temperatures?

The premium rubber and iron construction withstand typical coolant temperatures up to 250 °F (121 °C) and resist degradation from pressure cycles.

Do I need any special tools for removal?

Usually a simple pry bar or screwdriver is sufficient to tap out the old plug; no specialized equipment is required.