Valve seat inserts and seat bar
The webstore lists more than 30,000 valve seat inserts from 20mm to 70mm diameter, in cast and sintered materials, with specifications for unleaded fuel and for heavy duty CNG and LPG applications.
- 30,000+inserts listed on the webstore
- 20 to 70 mminsert diameters
- 2materials: cast and sintered
- 7sizes of valve seat bar
Materials
| Material | Suited to |
|---|---|
| Traditional cast | General use. All inserts we supply are suitable for unleaded fuel. |
| Hi Chrome | Unleaded fuel |
| Hi Nickel | LPG |
| DURABOND sintered | Available in materials for unleaded fuel and for LPG |
Two ranges
Imperial range. Sized for pre-set cutters, which machine a nominal-size counterbore with the interference fit already built into the insert.
Metric range. Sized as listed, so the counterbore is the insert size less the interference fit.
Not sure which suits your cutters? Read the fitting notes or call us.
Valve seat bar
For unusual sizes, valve seat bar in an unleaded material is available in seven sections, all 200mm long.
| Width x height x length (mm) |
|---|
| 36 x 15 x 200 |
| 41 x 19 x 200 |
| 46 x 24 x 200 |
| 51 x 30 x 200 |
| 56 x 35 x 200 |
| 61 x 40 x 200 |
| 66 x 45 x 200 |
Common questions
Are your inserts suitable for unleaded fuel?
Yes. All valve seat inserts we supply are suitable for unleaded fuel. LPG and heavy duty versions are also available.
How do I size the counterbore?
Imperial inserts come with pre-set cutters that machine a nominal-size counterbore, with the interference built into the insert. Metric inserts are sized as listed, so the counterbore must be the insert size minus the interference fit.
Can you make a special run?
Yes. Small batches and production runs of valve seat inserts or valve guides can be made to a customer specification.
Need an insert that is not listed?
Send us the engine, the valve size and the fuel. We will help you find a match or discuss a special run.