Sonnax 22841-04K Accumulator Piston Kit 

w/ Anodized Piston

48RE - 47RE - 47RH - 46RE - 46RH - 42RE - 42RH

OEM plastic accumulators are prone to breaking and poor sealing qualities.

The metal rings that are typically offered with other aftermarket accumulators have issues with sealing properly.

Sonnax has designed this billet servo to fix both the potential from breaking and the poor sealing qualities.

This billet aluminum piston comes with dual seals; Teflon and D-Rings.

The Teflon seal will prevent piston to bore contact while the D-ring seal vastly improves sealing compared to other aftermarket units.

The improved sealing can increase shift quality and feel.