Engine freeze plug, also referred to as core plug, expansion water plug or welch plug, is an essential component for engine cooling systems. It installs on the water jacket of engine cylinder blocks and cylinder heads. Rusted, cracked or deformed freeze plugs are the common cause of coolant leakage and engine overheating.
Our freeze plugs are manufactured from premium steel with zinc-plated surface treatment. This construction delivers reliable anti-rust performance and stable pressure resistance to maintain tight sealing. We supply a broad selection of sizes compatible with most gasoline and diesel engines for engine rebuild, auto repair and aftermarket wholesale. Custom specifications and OEM orders are available.
Key Features
– Zinc plated anti-rust protective surface
– Heavy-duty solid steel construction
– Stable sealing for engine water jacket
– Wide range of standard sizes in stock
– Custom OEM & bulk wholesale orders accepted
FAQ
**Q: What is the function of an engine freeze plug?**
A: It seals the water jacket of cylinder block and cylinder head, preventing coolant leakage during engine operation.
**Q: Why do freeze plugs start leaking?**
A: Most leaks come from surface rust, corrosion and aging. Our zinc plated finish greatly improves corrosion resistance.
**Q: Can you provide OEM freeze plugs for bulk orders?**
A: Yes, OEM service is available. We can produce parts according to your samples or drawings.