KIBBLEWHITE Cast Iron Valve Seat 10-SC250

Valve seat recession and microwelding are silent killers in high-performance engines—they compromise compression, reduce power output, and can lead to catastrophic valve failure. The KIBBLEWHITE Cast Iron Valve Seat 10-SC250 uses advanced powdered metal technology to deliver a dense, iron-based seat with uniform hardness and exceptional thermal properties that resist wear across leaded, unleaded, methanol, ethanol, nitrous, and forced induction applications. Whether you're running track days or street racing, these U.S.-made seats have proven themselves where it matters most: in competition.

• Powdered metal construction
• High-density iron alloy
• Uniform hardness throughout
• Superior thermal conductivity
• Microweld resistance
• Recession-resistant material
• Leaded fuel compatible
• Unleaded fuel compatible
• Methanol/ethanol rated
• Nitrous oxide rated
• Forced induction rated
• Track and street tested
• High-RPM rated
• Steel valve compatible
• Made in U.S.A.
• Verify fitment before ordering