Allison 1000 / 2000 / 2400 Series

The piston is what converts line pressure into clamping force, so a leaking one makes every other repair pointless.1000 C4 c3 piston. Each piston is produced to the bore and...

A piston that leaks past its seal applies the pack slowly, and slow apply is what burns friction material.1000 C4 c3 piston. The sealing surface is produced to the bore...

A pack with a leaking piston never reaches full clamp, whatever the pressure gauge says.1000 C4 c3 piston. This piston set restores a positive seal so the pack applies with...

Hairline cracks in a piston do not show until the circuit is under pressure on the road.1000 C4 c3 4th gen piston. The set covers the apply positions a rebuild...