Sonnax 59947-09K Valve Kit for Aisin AW 55-50SN 55-51SN Transmission

The Sonnax 59947-09K is a precision-engineered valve kit designed for the Aisin AW 55-50SN and 55-51SN automatic transmissions. As part of Sonnax's comprehensive 59947-series valve body repair line, this kit targets hydraulic circuit integrity within the valve body — restoring proper pressure control and eliminating wear-related transmission complaints.

Sonnax engineers their 59947-series components to address the chronic wear issues common to AW 55-50SN and 55-51SN valve bodies, where bore wear leads to pressure loss, sticking valves, and a range of shift quality problems. Each kit is manufactured to tight tolerances for a drop-in fit that restores OE hydraulic clearances.

Key Features:

• Designed for Aisin AW 55-50SN and 55-51SN automatic transmissions
• Restores proper hydraulic clearances lost to bore wear
• Manufactured from high-quality, wear-resistant materials
• Drop-in Zip Valve™ design for straightforward installation
• Helps resolve shift quality complaints and pressure-related fault codes
• Part of Sonnax's comprehensive 59947-series valve body repair lineup

Sonnax is the industry-leading source for transmission valve body repair components, trusted by professional rebuild shops worldwide. The 59947-09K kit delivers a reliable, long-lasting solution for restoring hydraulic performance in affected AW 55-50SN and 55-51SN units.