Sonnax 154740-06K Signal Accumulator Piston Kit for GM 8L45/8L90

The Sonnax 154740-06K signal accumulator piston kit allows signal accumulator piston bores in GM 8L45/8L90 transmissions to be reconditioned quickly and easily. This drop-in kit requires no reaming, making installation straightforward for transmission builders and technicians.

Key Features:

• Includes 4 piston sets which fit any of 7 locations
• Restores hydraulic integrity of the VFS signal pressure circuits with positive sealing and wear-resistant components
• Hardcoat anodized aluminum pistons combat premature wear
• Drop-in design for quick and easy installation
• Prevents future wear and pressure loss

Chronic shift quality issues in these transmissions can often be traced to wear in the signal accumulators of the control solenoid valve body. This kit addresses that wear by re-establishing proper sealing and restoring VFS signal pressure control, eliminating shift complaints and preventing future damage.