PVD valve stem coatings are tough. Used with inferior valve guide materials they will literally “take out” the guides. Our NBC ONE material is the answer. The same toughness and thermal conductivity that make it great for seats also make it great for guides.

To order valve guides, CLICK HERE and fill out the form and scan and email it to This e-mail address is being protected from spambots. You need JavaScript enabled to view it , or fax it to us at 248-588-9437