Product Name: Automatic Transmission Rebuild Gearbox Piston Kit Car make: For Ford Mazda Protege Transmission/Gearbox Number:4F27E FN4AEL Original NO.:133300A Condition:Brand New Brand: TRANSPEED Quantity:1 set
1. Have enough strength, stiffness, small mass and light weight to ensure the minimum inertial force.
2. Good thermal conductivity, high temperature resistance, high pressure, corrosion resistance, sufficient heat dissipation capacity, and small heating area.
3. There should be a small friction coefficient between the piston and the piston wall.
4. When the temperature changes, the size and shape change should be small, and the minimum gap should be maintained with the cylinder wall.
5. The thermal expansion coefficient is small, the specific gravity is small, and it has good wear reduction and thermal strength.