Description
When you hear the telltale gurgling of coolant or notice that familiar sweet smell of antifreeze in your shop, it’s often a frost plug that’s given up the fight. These little expansion plugs might seem like an afterthought, but they’re actually your engine’s last line of defense against freeze damage—and when they start weeping coolant, it’s time to replace them before you end up with a cracked block.
What You’re Getting
- 1 3/8 inch (35.36mm) diameter steel plug that fits perfectly in your Perkins engine block
- Sold in packs of 10 at individual pricing—handy when you’re doing a complete engine refresh
- Cup-style design that expands properly when installed for a tight, leak-free seal
- Quality steel construction that handles the pressure cycles and temperature swings of diesel engine operation
Built for Perkins Power
These plugs are sized specifically for the legendary Perkins 4.236, 4.248, and 6.354 series engines that power so many Massey Ferguson tractors. Whether you’re working on a classic MF 135 for hay season or maintaining a bigger 690 for heavy tillage work, these engines are known for their reliability—and proper frost plug maintenance keeps them that way.
Made to Last
Quality frost plugs don’t just seal—they’re engineered to expand uniformly under pressure without distorting or cracking. These steel plugs handle the constant heating and cooling cycles that come with diesel engine operation, plus they resist corrosion from coolant additives that can eat away at cheaper alternatives.
Installation Notes
Drive these plugs in with a socket or piece of pipe that matches the diameter—don’t use a hammer directly on the plug face or you’ll dimple it. Clean the bore thoroughly and apply a thin coat of sealant around the edge before installation. The plug should sit flush with the block surface when properly seated.
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