GM Engine Sealant 88864346
The 6.6L Duramax engine uses a spacer between the head and the valve cover. There is a gasket between the spacer and the head. Between the spacer and the valve cover is liquid gasket material. This is the genuine GM Engine Sealant and it works the best.
This number superseds part number 88861417
See the wide variety of 2001-2004 GM Duramax LB7 diesel performance, repair, and maintenance parts offered by Huckstorf Diesel both online here, and in person at Wisconsin’s premier diesel repair, performance, and installation center located just outside of Milwaukee Wisconsin in Franklin WI.
