Made of high-temp Viton material, these Valve Seals feature a full or semi-umbrella shape for best dual-purpose use. Helps prevent oil seepage down Valve Guides. Not recommended for use with dual Valve Springs. Sold in sets of 16.

8mm Stem Size, 0.530" Guide (426 Hemi, 5.2L/5.9L Truck Magnum/Jeep Engines)