Sonnax 68942-05K Master Overlap Control Valve Sleeve Kit for 722.6 Mercedes-Benz Transmission

The Sonnax 68942-05K Master Overlap Control Valve Sleeve Kit is designed to restore hydraulic control and eliminate shift problems in Mercedes-Benz 722.6 (NAG1) automatic transmissions. Continuous plunger valve oscillation causes wear at the overlap control valve sleeves, allowing modulated oil pressure to exhaust or oppose shifts, creating harsh shifts, bumpy shifts, flare shifts, and slipping between gears.

Key Features:

• Highly wear-resistant sleeves restore necessary hydraulic control tolerances in the 1-2/4-5, 2-3, and 3-4 bores
• External O-rings provide additional positive sealing in the bore
• End-face notches allow for easy sleeve identification (one notch = 1-2/4-5, two notches = 2-3, three notches = 3-4)
• OEM springs and anodized valves can be reused
• Direct replacement for worn factory sleeves

Kit Includes:

• 1-2/4-5 Overlap Control Sleeve with O-Ring
• 2-3 Overlap Control Sleeve with O-Ring
• 3-4 Overlap Control Sleeve with O-Ring

This kit addresses common transmission shift complaints in Mercedes-Benz 722.6 transmissions by restoring proper modulation of clutch apply and exhaust pressures. Installation requires valve body removal and disassembly; follow manufacturer instructions for proper installation procedures.