BOOST VALVE KIT (T400) - NON O-RINGED
# 36792K

Boost Valve Kit, Non O-Ringed

BOOST VALVE KIT (T400) - NON O-RINGED

Factory Style, No O-Rings

Symptoms:

  • Low line rise
  • 1-2 Soft
  • 2-3 Soft
  • Delayed Reverse
  • Reverse shudder

Cause:
Wear of the sleeve I.D. due to continuous oscillation of the boost valve.

Correction:
"Factory" style Sonnax boost valve kit restores hydraulic integrity with closely toleranced parts.


Vehicles with a THM 400 transmission frequently have poor line rise, soft 1-2 and/or 2-3 shifts,and/or Reverse engagement difficulties. These problems can be caused by the reciprocating boost valve wearing the inside diameter of the boost sleeve. When this occurs, oil that enters the modulated throttle valve orifice leaks past the boost valve and exhausts through the Reverse orifice or to the sump, resulting in poor line rise. Also, Reverse oil can exhaust both to the sump and back through the modulated TV orifice. The Sonnax boost vlave kit eliminates the above problems.

  • Boost valve and sleeve are manufactured from high-quality steel
  • Uses the same valve spool diameters as OE to regain factory shifts

Contents:

  • Valve
  • Sleeve

SONNAX Installation Instructions

Type of Product: Sundry Parts
Qty Needed:
Years:
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