Sonnax 88894 CPC Valve Spring for Honda Acura A4RA B4RA M4RA Transmissions

The Sonnax 88894 is a heavy-duty replacement CPC (clutch pressure control) valve spring designed for Honda and Acura 4-speed automatic transmissions. This spring is located in the secondary valve body and features a wire diameter larger than the original equipment design, significantly reducing stress on the spring and preventing future breakage.

Key Features:

• Designed for early-style units with .260" deep spring pocket and .480" long spring
• Heavy-duty wire diameter larger than OE design
• Not available from Honda as a separate replacement part
• Prevents harsh upshifts, downshifts, and forward engagements

Application:

• Fits 1996-1999 Honda/Acura A4RA, B4RA, and M4RA transmissions
• Compatible with B46A transmission models

This spring addresses common complaints in A4RA, B4RA, and M4RA transmissions including harsh upshifts, downshifts and forward engagements, while reverse engagement remains fine. The upgraded design ensures reliable clutch pressure control and extends transmission life.