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8L90 Signal Accumulator Piston Kit

Accumulator Piston Sets | FREE UPS Ground to the contiguous United States (lower 48) if purchased with a Kit. USPS Priority Mail if purchased separately.
Availability: In stock
In stock items ship within 1-2 business days.
Picture for representation purposes only. Actual contents may vary as we continue to develop our products.

The Sonnax drop-in signal accumulator piston kit allows bores to be reconditioned quickly and easily with no reaming required. The hydraulic integrity of the VFS signal pressure circuits are re-established, and future wear prevented with positive sealing and wear resistant components.

  • Hardcoat anodized aluminum piston combats premature wear
  • Annular grooves to reduce wear rate
  • Highly wear-resistant sleeve to prevent future wear
  • Positive sealing O-ringed plug prevents leakage in already worn bores
  • Mating spring to re-establish OE dampening action
  • Drop-in Zip Valveā„¢ parts install quickly and easily


  • Sleeves (7)
  • Pistons (7)
  • Springs (7)
  • O-Rings (7)
  • End Plugs (7)