MAHLE Original Positive Stop Valve Stem Seal - 0.192 in Valve Stem - 0.413 in Guide OD - Viton® Rubber (Set of 32) AFC81-1-6-4 Recommended for API SM/SL/SJ/SH/SG/CF and

Recommended for API SM/SL/SJ/SH/SG/CF and ACEA A5/B5

Crower also offers the "CoolFace" option on competitor's solid lifters as well

1986-1996 Ford E-350 Econoline

They are required for Edelbrock Ford Victor

50” bolt pattern rotors

MAHLE Original Positive Stop Valve Stem Seal - 0.192 in Valve Stem - 0.413 in Guide OD - Viton® Rubber (Set of 32) AFC81-1-6-4 Recommended for API SM/SL/SJ/SH/SG/CF andProduct Description: Valve Stem Seal Positive Stop 0. 192 in Valve Stem 0. 413 in Guide OD Viton Rubber Set of 32 MAHLE ORIGINAL produces a broad range of products, including camshaft, connecting rod, and main bearings for a variety of engines. MAHLE ORIGINAL CLEVITE also offers a complete line of diesel engine components, from piston rings and gaskets to complete turbocharger assemblies.