2 required.

The kit contains a gasket, piston o-rings, piston, cover o-ring, bolts and cover.

This Purple Anodized Aluminum cover is designed to replace other covers
and requires no modifications to the case.
It utilizes a gasket and o-ring for better sealing and is stronger
to handle higher pressures, mounting bolts and plug are also included.

Servo piston with gasket and o-rings.
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This piston accept both teflon and metal sealing rings. Replacement teflon seals #18608T (2 reqiured).
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The kit contains a gasket, cover o-ring, 2 teflon piston seals, bolts, piston, cover and cover plug.
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