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Sonnax 28320

High Clutch Return Spring

Sonnax 28320


Sonnax 28320 High Clutch Return Spring $10.81
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Estimated to ship directly from the manufacturer on 05/02/18
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Sonnax Clutch Drum Kit
Sonnax 852-28756-01K
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High Clutch Return Spring

Sonnax 28320 Details

Replacement Components

Package Quantity: 24

The Sonnax Powerglide high clutch return springs 28320 offer a reliable replacement of the OE or aftermarket high clutch return springs, which is a standard procedure for off-season Powerglide® overhauls. Sonnax has engineered 28320 to provide positive disengagement of the direct clutch in low gear and to yield minimal resistance during upshift.

The Sonnax springs are made from high tensile spring wire to slow fatigue. In addition, each spring is cadmium-plated and baked to resist embrittlement. All spring ends are close-wound to prevent arch deflection and then match ground to a uniform length to ensure equal load distribution among all springs in the clutch assembly.

  • Reliable replacement of OE springs
  • Engineered for improved spring life
  • Manufactured for better spring engagement


Manufacturer's Part Number:

Sonnax invented the original, high-capacity Powerglide 10-clutch drum more than a decade ago. The proven dependability of this patented drum makes it a popular choice among racing enthusiasts.

  • The 10-Clutch System
  • Improves clutch capacity for maximum durability
  • Increased piston travel
  • Excess material removed from high-strength, cast steel drum to reduce rotating mass 6061 Forged aluminum piston will not crack at high operating pressure like cast pistons
  • Forged chromoly steel clutch hub

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