Race-Calibrated Servo Return Spring Kit For Powerglide Units

Name: Race-Calibrated Servo Return Spring Kit For Powerglide Units
Brand: SONNAX
SKU: 852-28133-HD
Price: 16.08 USD
Availability: InStock

^$16⁰⁸

3 left in stock

Ships on Sep 08, 2026

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GM Powerglide

For Powerglide Units
Includes Shims And Spring

Features:
Designed To Work With Line Pressures From 200-275 PSI.
Includes Two .050" Shims To Aid In Tuning At Higher Line Pressures.
Ensure optimum servo function in high gear for longer band life, cooler transmission and tunability of shift.
Higher seat pressure to help ensure full servo release but with a lower rate for greater net apply force.

Part TypeAutomatic Transmission Servo Piston Spring

BrandSONNAX

Package Height2.4

Package Width5.7

Package Length7.2

Weight0.34 PG

Part CategoryReplacement Parts

Part FitmentSemi Universal

Vendor Part Number28133-HD

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

Race-Calibrated Servo Return Spring Kit For Powerglide Units

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