Transmission GM 6L80 6L90 Internal Clutch Plate - Transmission
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6L80, 6L90

4-5-6 Clutch Steel
Part No. 104120-01

Wide, for use with Powerglide-style, 45-tooth frictions.

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Sonnax 4-5-6 clutch steel 104120-01 is a high-quality, Linder processed steel with a wider friction surface than OE clutches. Use with Powerglide-style 45-tooth frictions and aftermarket 45-tooth 4-5-6 clutch hub and intermediate shaft.

See instructions for 104680-45 or 104690-45 for clutch stack up recommendations.

  • Thickness: 0.078"
  • 6L80, 6L90 4-5-6 Clutch Steel 104120-01
  • 6L80, 6L90 4-5-6 Clutch Steel 104120-01 details

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6L80 & 6L90 Upgrade Options for the 4-5-6 Clutch

Related Sonnax Parts

Required

Recommended

6L80, 6L90 4-5-6 Clutch Steel 104120-02

6L80, 6L90

4-5-6 Clutch Steel 104120-02

Wide, for use with Powerglide-style, 45-tooth frictions.

  • Thickness: 0.090"

Required

Recommended

6L80, 6L90, Powerglide Clutch Friction 104120-03

6L80, 6L90, Powerglide

Clutch Friction 104120-03

  • Material: High Energy
  • Thickness: 0.060"

Required

Recommended

6L90 Extreme Duty 4-5-6 Clutch Hub & Intermediate Shaft 104690-45

6L90

Extreme Duty 4-5-6 Clutch Hub & Intermediate Shaft 104690-45

Use with Powerglide-style, 45-tooth frictions, Sonnax steels & high capacity piston kit 104960-20K.

  • Material: 300M
  • Tooth Count: 45-T Powerglide-style hub spline

Required

Recommended

6L80 Extreme Duty 4-5-6 Clutch Hub & Intermediate Shaft 104680-45

6L80

Extreme Duty 4-5-6 Clutch Hub & Intermediate Shaft 104680-45

Use with Powerglide-style, 45-tooth frictions, Sonnax steels & high capacity piston kit 104960-20K.

  • Material: 300M
  • Tooth Count: 45-T Powerglide-style hub spline

Required

Recommended

6L80, 6L90 High Capacity 4-5-6 Clutch Apply Piston Kit 104960-20K

6L80, 6L90

High Capacity 4-5-6 Clutch Apply Piston Kit 104960-20K

Use with Powerglide-style, 45-tooth frictions, Sonnax steels & 45-tooth 4-5-6 hub.

Required

Recommended

6L45, 6L50, 6L80, 6L90 Line Pressure Booster Kit 6L80-LB1

6L45, 6L50, 6L80, 6L90

Line Pressure Booster Kit 6L80-LB1

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