1 gasket sets and 9 individual gaskets for the Yamaha YZ490. Material, thickness and OEM cross-reference for each.
| Set | Gaskets in Set | Material | Years |
|---|---|---|---|
| SET A | 4 | A | 1984 - 1990 |
| Gasket | OEM Number | Material | Thickness | Years | |
|---|---|---|---|---|---|
|
|
Crankcase Cover 1 | 1LV-15451-00 | A | 20 mm | 1984 - 1990 |
|
|
Crankcase Cover 3 | 3R4-15462-00 | A | 20 mm | 1982 - 1990 |
|
|
Cylinder Base | 1LV-11351-00 | A | 20 mm | 1984 - 1990 |
|
|
Cylinder Base | 1LV-11351-00 | B | 30 mm | 1984 - 1990 |
|
|
Exhaust Pipe | 3R4-14613-00 | A | 20 mm | 1982 - 1983 |
|
|
Front Chamber | 363-14184-00 | B | 30 mm | 1982 - 1985 |
|
|
Valve Seat | 39X-13621-11 | A | 20 mm | 1984 - 1985 |
|
|
Valve Seat | 30X-13621-01 | A | 20 mm | 1984 - 1990 |
|
|
Valve Seat | 80L-13621-01 | A | 20 mm | 1982 |
Ready-to-cut files for every gasket listed here are available to subscribers. Specifications are free to view.
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