Fel-Pro 423 Engine Valve Stem Oil Seal

Fel-Pro® also includes specialty lines for performance, sport and marine engines.

Fel-Pro® engineers are continually pushing ahead with new sealing science, developing problem-solving products like PermaDryPlus®. rigid carrier gaskets.

Fel-Pro® is a leader in multi-layer steel (MLS) head gasket design, the current leading-edge technology in sealing today's lightweight engine castings with a long-term, leakproof seal called PermaTorqueMLS®.

Being a global producer of engine and sealing products, Fel-Pro®. aftermarket customers benefit from proven expertise in engineering and manufacturing OE components and subsystems for the world's major automotive manufacturers. Our extensive field experience gives us insights into the expected changes in engine components over time. We design our aftermarket sealing parts to meet your specific needs in the replacement environment.