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Symptoms:

  • Burnt Reverse clutch
  • Delayed Reverse
  • Low line rise in Reverse
  • Low Reverse boost
  • No Reverse
  • Reverse slip

Cause:

Persistent oscillation of OE steel boost valve within aluminum sleeve results in sleeve bore wear and loss of proper Reverse pressure.

Correction:

Recover hydraulic control and renew Reverse performance by installing Sonnax reverse boost valve kit.

60-40LE, 60-41SN

Reverse Boost Valve Kit
Part No. 19741-07K

You need this if... View Instructions

Vehicles with Aisin AW 60-40LE and 60-41SN transmissions may exhibit insufficient line rise in Reverse, delayed or slipping Reverse, and/or a burnt Reverse clutch. Continuous oscillation of the OE steel boost valve within the aluminum boost sleeve causes premature wear, creating a path for boost pressure to exhaust. Installing Sonnax Reverse boost valve kit 19741-07K returns hydraulic integrity to the boost circuit, reviving normal Reverse operation.

  • Restores proper line rise
  • Hardcoat anodized aluminum valve combats premature wear
  • Sleeve manufactured from highly wear-resistant aluminum to prevent wear and leakage
  • Valve
  • Sleeve
  • Shims (3) 1 Extra
  • 19741 07k combo
  • 19741 07k

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.

  • 19741 07k test