Below are the available bulk discount rates for each individual item when you purchase a certain amount
High Chrome Alloy Steel, 1.812" x 1.562" x .219"
Hard Valve Seats, set of eight
Application: Universal Unleaded Retro fit, Tapered ID
Use for unleaded fuel conversion or to repair damaged or sunk seats in OEM cast iron heads.
Our current iron head valve seat inventory comes from either Manley or Qualcast.
This size seat is from Qual Cast. Part Number: 20-1812-4
If you're looking for a seat we don't have listed, send us a message and we'll check if they are available.
High Chrome Alloyed Seats are intended for unleaded fuel.
Chrome alloy seats easily machined on modern seat and guide machines or ground using stones. (Sioux, Kwik way, etc)
Tapered ID seats areusually intended for shops using stones but can be cut also.
Most retro fit seats are available in increments of 1/16".
The listed outside diameter of the seat is the cutter size to use on the head.
The seat itself will have the proper press for an iron head added to it's outside diameter.
Example: A seat with a listed OD of 1.500" will measure around 1.5045"-1.506" so it will have around .0045"- .006" press fit if installed into a 1.500" counter bore.
If you can't find what your looking for, send us a message.
Alex's Parts- The smart choice in valve train parts~