LPC Accumulator Piston Kit, for 55-50SN, 55-51SN, Sonnax Transmission
LPC Accumulator Piston Kit, for 55-50SN, 55-51SN, Sonnax Transmission
LPC Accumulator Piston Kit, for 55-50SN, 55-51SN, Sonnax Transmission

LPC Accumulator Piston Kit, for 55-50SN, 55-51SN, Sonnax Transmission

  • Sale
  • $70.34

Superseded Part Number: 59947-LPC, S89950K

Interchange Part Number: 59947-LPC, S89950K

Surface Finish: new

Manufacturer Part Number: 59947-LPC, S89950K

Other Part Number: 59947-LPC, S89950K

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
  • Delayed Forward
  • Harsh shifts
  • 2-3 Flare
  • Erratic SLT pressure

Cause:

Line pressure control accumulator pistons are leaky, jammed or bound.

Correction:

This LPC accumulator piston is made of aluminum to match the expansion rate of the aluminum valve body (OE was steel). The piston restores SLT pressure and dampening. SLT is the boost pressure in this unit.

55-50SN, 55-51SN

LPC Accumulator Piston Kit
Part No. 59947-LPC

Also fits AW55-51SN, AF 23/33and RE5F22A units.

  • O-rings eliminate fluid leakage between LPC piston and bore.
  • O-rings eliminate metal-to-metal contact between piston and bore that causes wear.

You need this if...

Vacuum test at the cover exhaust hole or accumulator entry port is below 18" of vacuum.

  • Piston
  • Springs (2)
  • O-Rings (2)
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