Speedmaster PCE273.1063 stainless steel intake valves are precision-engineered as a direct standard (STD) replacement for Oldsmobile 400, 425, and 455 engines. Featuring a 2.072-inch head diameter and 11/32-inch stem diameter, these valves deliver improved durability and heat resistance compared to stock valves, making them well-suited for engine rebuilds and performance applications.
Constructed from stainless steel for long-lasting corrosion resistance and reliable sealing under demanding conditions, these intake valves help restore or maintain proper engine performance. Whether refreshing a tired Oldsmobile big-block or building a stronger engine, the PCE273.1063 set provides a quality foundation for your build.
![Speedmaster 1-147-099 Oldsmobile 400 425 455 Low-Rise Aluminum Intake Manifold [Black]](https://cdn11.bigcommerce.com/s-o2urolu8d5/images/stencil/500x659/products/359320/388927/61bG7lC21ML__05879.1787166981.jpg?c=1 "Speedmaster 1-147-099 Oldsmobile 400 425 455 Low-Rise Aluminum Intake Manifold [Black]")