Description

When you’re dealing with coolant seepage around the cylinder head or notice crusty residue where this plug should be keeping things sealed tight, it’s time for a replacement. Engine plugs take a beating from constant heating and cooling cycles, plus the pressure changes that come with hard work. This replacement plug is built with materials that expand and contract properly with your engine, creating a reliable seal that won’t pop out when the pressure builds or crack when the temperature drops.

What You’re Getting

Materials that expand and contract properly with your cylinder head for a reliable seal
Direct replacement that fits without modifications—no guesswork or grinding to make it work
Corrosion-resistant construction that stands up to years of coolant exposure
Built to maintain its seal through freeze-thaw cycles, vibration, and thermal stress with solid construction that prevents cracking

Built for Real Farm Work

This expansion plug fits New Holland T5, T6, T7, T6000, and T7000 series tractors—the workhorses you count on for everything from field cultivation and hay operations to loader work around the farm. Whether you’re running a T5 utility tractor for daily chores or operating a bigger T7 for heavy row-crop work, this plug keeps your cooling system sealed so your engine runs at proper temperature when there’s work waiting.

Made to Last

These plugs seal the casting holes left from engine manufacturing, but years of freeze-thaw cycles, vibration, and coolant chemicals eventually take their toll. This replacement features heavy-duty construction that handles the constant pressure and temperature swings farm engines dish out.

Installation Notes

Installing an expansion plug requires draining your cooling system—it’s not the kind of job you want to tackle in the field. Make sure you clean the head opening thoroughly before pressing in the new plug, and use the right size driver to avoid distorting the plug. A light coating of sealant around the edge helps ensure a watertight fit.