.420″ Top Guide
Cast Iron Guides. KPMI® has produced a proprietary cast iron blend that thrives in the tough operating conditions of today’s engines. This certified cast iron provides excellent wear resistance and a superior guide bore finish that is easy on valve stems.
Manganese Bronze Guides. Easily reamed, these guides can be delicately finished with high quality flex-hones.
Use with 71010 Viton® Valve Seals or 71032 OE-Style Valve Seals