- FED Custom High-Temp Silicone O-Rings For FED M311 and F-Series Cylinder Head Exhaust Ports
- Valve Seals – U.S. Seal Viton High Heat Seal – 8mm, .470 guide
- High-Temp Silicone Cord – F-Series Valve Cover Seal
- Kit is PER HEAD and Includes: 4 O-Rings, Seal For One Valve Cover, 8 Valve Seals
- FED Custom High-Temp Silicone O-Rings For FED M311 and F-Series Cylinder Head Exhaust Ports
- Valve Seals – U.S. Seal Viton High Heat Seal – 8mm, .470 guide
- High-Temp Silicone Cord – F-Series Valve Cover Seal
- Kit is PER HEAD and Includes: 4 O-Rings, Seal For One Valve Cover, 8 Valve Seals
