Supported Servo Pin And Cover Kit Compatible With OE/Aftermarket Powerglide Servo Pistons Includes:

Name: Supported Servo Pin And Cover Kit Compatible With OE/Aftermarket Powerglide Servo Pistons Includes:
Brand: SONNAX
SKU: 852-28821-19K
Price: 123.42 USD
Availability: InStock

^$123⁴²

Ships on 09/15/2026

Lowest Price Guarantee

GM Powerglide

Compatible With OE/Aftermarket Powerglide Servo Pistons
Includes:
Supported Servo Pin
Supported Servo Cover
Cover O-Ring
Pin O-Ring
2 Shims
Retaining Clip
Gasket
Bolts
Plug

Features:
Unique design eliminates piston binding that causes unexplained band failure.
Low-drag O-ring prevents high gear & release oil pressure bore leaks.
Eliminates friction caused by side-loading and ensures the servo piston will apply and release without binding.

High-Performance Servos, Servo Kits, and Components to Meet the Toughest Transmission Challenges

Sonnax servos progressively increase band force as line pressure increases and are the perfect upgrade for more holding power without excessively harsh shifts.

Part TypeAutomatic Transmission Servo Cover

Product LineSonnax Servo Kit and Components

BrandSONNAX

Package Height3.1

Package Width4.6

Package Length5.2

Weight1.21 PG

Part CategoryReplacement Parts

Part FitmentSemi Universal

Vendor Part Number28821-19K

Package Qty1

Package TypeEA

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Please click here to download the instructions PDF file

Some parts are not legal for use in California or other states with similar laws / regulations

Supported Servo Pin And Cover Kit Compatible With OE/Aftermarket Powerglide Servo Pistons Includes:

High-Performance Servos, Servo Kits, and Components to Meet the Toughest Transmission Challenges

⚠️ Warning

Motor Vehicles

Tools

Electrical Cords