Exhaust Valve Seats

We have wide range of Exhaust Valve Seats those are made by high grade of material and these are according to the client requirement.
1. Cast Iron Cylinder Heads
For ease in selecting and stocking inserts our part numbering system incorporates the cutter size as the basic part number on universal size seats. For example: SB1625-1, "1625" indicates this seat requires the use of a 1-5/8" cutter. Actual O.D. is 1.630 allowing for press fit. For factory-installed replacement inserts, the basic part number is the exact O.D. followed by suffix "E". For example: SB1678E-1, "1678E" indicates a factory-installed seat with an actual O.D. of 1.678.

2. Aluminum Cylinder Heads
The same part numbering logic is used for these inserts and they are identified with suffix 50 & greater. NOTE: These inserts are oversized from the OEM Metric size to the next largest standard U.S. cutter size. For example: SB1500-57, "1500" indicates this seat requires the use of a 1-1/2" cutter. Actual O.D. is 1.507 allowing for .007 recommended press fit for aluminum heads. These inserts also have a blended radius on the leading edge to prevent damage to the counter-bore during installation.