Transmission Parts Subaru TR580 Valve Body Valve / Sleeve
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Symptoms:

  • TCC slip codes
  • TCC apply & release concerns
  • Lockup concerns

Cause:

Excess wear of TCC boost valve and sleeve allows critical pressure loss, resulting in TCC apply and release concerns.

Correction:

Sonnax drop-in TCC boost valve kit restores hydraulic integrity to the circuit with tightly controlled tolerances.

TR580

TCC Boost Valve Kit
Part No. 823740-12K

You need this if... View Instructions Find a Distributor

In Subaru TR580 transmissions, the TCC boost valve wears the inside diameter of the sleeve due to constant valve oscillation. When wear is significant, oil leaks past the valve preventing it from properly stroking the converter clutch apply valve into the release position, leading to engine stalls and converter overheat. Sonnax TCC boost valve kit 823740-12K restores hydraulic integrity to the circuit with tight tolerances and proper material.

  • Steel valve combats premature wear
  • Highly wear-resistant sleeves increase service life
  • Drop-in Zip Valve™ parts install quickly and easily
Learn More About Zip Valve™ Drop-In Repairs
  • Spacer Selective
  • Valve
  • Sleeve
  • TR580 TCC Boost Valve Kit 823740-12K
  • TR580 TCC Boost Valve Kit 823740-12K

You need this if...

Vacuum testing at the port(s) indicated fails to hold the recommended minimum in-Hg, or if wear is visually detected.

TR580 TCC Boost Valve Kit Vacuum Test Locations
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