Oversized Solenoid Modulator Valve Kit, for 55-50SN, 55-51SN, Sonnax
Oversized Solenoid Modulator Valve Kit, for 55-50SN, 55-51SN, Sonnax
Oversized Solenoid Modulator Valve Kit, for 55-50SN, 55-51SN, Sonnax

Oversized Solenoid Modulator Valve Kit, for 55-50SN, 55-51SN, Sonnax

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  • $33.62

REQUIRES TOOL: F-59947-TL34

REQUIRES VB-FIX: VB-FIX, T-VB-FIX

Superseded Part Number: 59947-34K, S89741LKA

Interchange Part Number: 59947-34K, S89741LKA

Surface Finish: new

Manufacturer Part Number: 59947-34K, S89741LKA

Other Part Number: 59947-34K, S89741LKA

Brand: Sonnax

UPC: Does not apply

Hello, If you need assistance finding a part please supply the VIN number of your NORTH AMERICAN vehicle AND the part number you are looking for. 

Symptoms:

  • Low line pressure
  • 2-3 Flare
  • No 3rd
  • No 4th
  • No 5th
  • Delayed Forward
  • 5th Gear only
  • No lockup

Cause:

The OE steel valve results in excessive clearance during hot operation and frequently sticks when cold. Bore wear can reduce available solenoid modulator pressure, resulting in delayed forward, flare on 2-3, TCC slippage or soft shifts overall. Bore wear at the inboard end results in excess solenoid pressure, improper gear or harsh shifts.

Correction:

The Sonnax oversized solenoid modulator valve made of wear resistant hardcoat anodized aluminum re-establishes proper pressures. Additional support is given to the valve by adding length to the outboard spool.

55-50SN, 55-51SN

Oversized Solenoid Modulator Valve Kit
Part No. 59947-34K

    REQUIRES TOOLING: F-59947-TL34
      REQUIRES VB-FIX: VB-FIX

Aisin AW 55-50SN transmissions may exhibit multiple shift problems due to excessive wear in the solenoid modulator circuit. Loss of 3rd, 4th or 5th gear and no TCC apply are common along with low line pressure and flare shifts. Bore wear at the inboard end results in high solenoid pressure, improper gear or harsh shifts. The Sonnax oversized solenoid modulator valve kit 59947-34K allows the bore to be refurbished, and the hydraulic integrity restored for proper modulated solenoid pressure.

  • Hard-coat anodized to increase wear resistance
  • Added length at the outboard spool for additional valve support
  • Salvages severely worn valve castings
  • F-59947-TL34 tool kit can be used for both 59947-34K and 59947-35K oversized valve kits
  • Valve
  • End Plug
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