616-104-321-51 1st Oversize Intake Valve Guide

For valves with 10 mm stem --  All 356 and 912 three-piece case engines – This guide is 14,12 OD  x  73,00 length. Guide is US-produced, made from superior phosphorus-bronze with provision for valve seal.   You need 8 per engine. 

For installation lengths and tolerances, follow the Porsche Specifications Book, pages 42 – 47.

616-104-321-51