• Flare shifts
  • Bump shifts
  • Harsh shifts
  • Slipping gears


Wear at the 1-2/4-5, 2-3 and/or 3-4 overlap control valve sleeves allows modulating oil pressure to exhaust.


These modulating sleeves position the valve for proper clutch feed. Sonnax drop-in sleeve kits correct the wear condition and restore control of clutch pressure apply or exhaust.


Master Overlap Control Valve Sleeve Kit
Part No. 68942-05K

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

Continuous plunger valve oscillation causes wear at the overlap control valve sleeves, allowing modulated oil pressure to exhaust or oppose the shift and create numerous shift complaints in Mercedes 722.6 units. The highly wear-resistant Sonnax master overlap control valve sleeve kit 68942-05K restores necessary hydraulic control tolerances in the 1-2, 4-5 bore as well as the 2-3 and 3-4 bores.

  • External O-ring provides additional positive sealing in the bore
  • The OE spring and anodized valve can be reused
  • Drop-in Zip Valve parts install quickly and easily
Learn More About Zip Valve™ Drop-In Repairs

End-face notches on Sonnax valves allow for easy sleeve identification:

  • One Notch = 1-2, 4-5 Sleeve
  • Two Notches = 2-3 Sleeve
  • Three Notches = 3-4 Sleeve
  • 2-3 Overlap Control Sleeve & O-Ring
  • 1-2, 4-5 Overlap Control Sleeve & O-Ring
  • 3-4 Overlap Control Sleeve & O-Ring

Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.

Mercedes 722.6 Valve Body Layout

Mercedes 722.6 Valve Body Layout
  • 722.6 Master Overlap Control Valve Sleeve Kit 68942-05K
  • 722.6 Master Overlap Control Valve Sleeve Kit 68942-05K

You need this if...

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