UK made Plasma hardened Inlet valve , fits T120 TR6 T140 etc from 1967 to 1984
Valve is hardened using the "Pulsed Plasma Nitriding." process, this gives the valve resistance to wear and anti friction properties , when this type of valve is matched with our Colsibro material valve guides , you have the best combination for valve and guide, for performance and longevity
