Popular Performance Parts

Powerglide Boost Valve Kit | Sonnax | Largest OE Ratio .489''

Powerglide Boost Valve The OE boost sleeve in GM Powerglides wears from repeated oscillation of the boost valve. The wear allows leakage, reduces line pressure and contributes to line pressure...

Powerglide Super Hold Servo Kit | Sonnax

PowerGlide Super Hold Servo Kit by Sonnax Super Hold Servo KitPart No. 28821-09K Sonnax s

Powerglide Supported Servo Master Kit | Sonnax

PowerGlide Supported Servo Master Kit by Sonnax Part No. 28821-20K Conventional GM Powerglide servos are not well-supported and t

Powerglide Servo Piston & Cover Kit | Sonnax | Dual Seal PTFE Ring Style

PowerGlide Servo Piston & Cover Kit (Dual Seal, PTFE Ring Style) by Sonnax Part No. 28821-08K

Powerglide HD Reverse Clutch Return Spring | Sonnax | 17-Pack

Heavy Duty Reverse Clutch Return SpringPart No. 28320A Package Quantity: 17 Sonnax heavy duty reverse clutch return spring 28320A improves the release rate of the transbrake-equipped GM Powerglide...

Powerglide Transmission Shift Reprogramming Kit by TransGo

TRANSGO PART: PG-2S CLASSIFICATION: REPROGRAMMING KIT FITS:  A

TH350 TH400 MT540 Powerglide HD Pump Bushing | Sonnax | Steel .615''

TH350 TH400 MT540 Powerglide HD Pump Bushing Sonnax Part Number: 34034T-01 OE PART NUMBER: 29511860 Worn babbit pump bushings in GM Powerglide, TH350, TH400 and Allison®