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Sunbelt Valve Body Builders

55-51SN | 55-50SN Zip Kit®

55-51SN | 55-50SN Zip Kit®

$280.00 USD
$280.00 USD
Sale Sold out

Check out this sonnax zip kit for your 55-51SN/50SN transmission for easy DIY repair and upgrades!

Part No. AW55-50SN-ZIP

Sonnax Zip Kit AW55-50SN-ZIP targets the root cause of multiple complaints by sealing the critical circuit pressure losses in Aisin AW 55-50/51SN valve bodies. The kit contains uniquely designed parts to prevent the loss of pressures within the main line, lockup, solenoid and throttle signal circuits. The kit also seals multiple circuits known to suffer from end plug leakage. No special tools are required for installing these parts.

  • Drop-in Zip Valve® parts install quickly and easily, no reaming or special tools required
  • Uniquely designed parts address root causes of valve body complaints by sealing critical pressure circuits
  • Detailed technical booklet included with in-depth rebuild and inspection tips for comprehensive valve body repair

  • Pressure Regulator Valve, Balance Pin, Retaining Clip & O-Rings 2 O-Rings, 1 Extra
  • O-Ringed End Plug Kit
  • Solenoid Relay Valve Kit
  • Solenoid Modulator Valve, Sleeve, Spacer Sleeve & Spring
  • Boost Valve & Sleeve
  • Lockup Relay Control Valve Kit
  • B5 Control Spring
  • LPC Accumulator Piston Kit
  • Lockup Control Valve Kit
  • Line Relief Spring Red
  • Secondary Regulator Valve, Spring & Seals 2 Seals, 1 Extra
  • B4 Release & Reverse Inhibit Springs (2) No Color
  • Cooler Bypass Spring Large, No Color
  • TCC Check Valve Springs (2) 1 Yellow, 1 White
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