Sonnax 76890-21K 2-3 Accumulator Piston and Sleeve Kit

The Sonnax 76890-21K 2-3 accumulator piston and sleeve kit is a comprehensive transmission case repair solution designed to restore forward line pressure and salvage damaged transmission cases. This kit repairs damaged 2-3 accumulator bores that are common sources of forward or direct clutch oil pressure loss in AOD, AODE, 4R70E, 4R70W, 4R75E, and 4R75W automatic transmissions.

Key Features:

• Includes press-in sleeves and matched piston for complete bore repair
• Restores proper forward line pressure and clutch operation
• Installs easily without machining or special tools required
• Eliminates concerns about bonded piston seal delamination
• Cost-effective alternative to complete transmission case replacement
• Precision-engineered aluminum and steel construction

This kit provides a permanent repair for worn or scored 2-3 accumulator bores, conditions that previously required expensive case replacement. The press-fit sleeve design ensures a secure installation and long-lasting performance, making it an essential component for professional transmission rebuilders and technicians working on Ford automatic transmissions.