Gm ws 43

400 (3L80), AT-540, 68RFE, BorgWarner 310mm LU (A618, 47RH/RE, 48RE), BorgWarner 310mm NLU, Buick 350

Support Shim GM-WS-43

  • Material: Steel
  • Outer Dia.: 3.600"
  • Inner Dia.: 2.350"
  • Thickness: 0.010"
104960 10k combo

6L80, 6L90

High Capacity 4-5-6 Clutch Apply Piston Kit 104960-10K

Use with OE 36-tooth clutches and OE steels.

104960 20k combo

6L80, 6L90

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

Coming Soon

Use with aftermarket 45-tooth Powerglide clutches and special steels.

Bw htcm 20hs

A618, 47RH/RE, 48RE (310mm) Multi-Plate Performance Converter

Turbine Hub BW-HTCM-20HS

  • Material: Chromoly
  • Internal Spline Tooth Count: 35
  • External Spline Tooth Count: 68
76612a 01

4R70W, 4R75W

Forward Sun Gear 76612A-01

31-Tooth, for use with 2.84/1.55 ratio gear sets.

Gm md 6 2

6L80 (300mm), Single-Plate Performance Converter, 6L80, 6L90 (300mm), 6L80, 6L90 (JMBX), Multi-Plate Performance Converter, HP Miscellaneous

Mechanical Diode® GM-MD-6-2

Use of this mechanical diode requires a 3.25" bore stator such as the Opel or Sonnax GM-ST-073, GM-ST-073C, GM-ST-073S, GM-ST-073SC, GM-ST-082 or GM-ST-086.

  • Material: Steel
  • Spline Tooth Count: 36
  • Design Strut Count: 10
  • Engagement Strut Count: 2
Bw rk 4

A618, 47RH/RE, 48RE (310mm) Multi-Plate Performance Converter, BorgWarner 310mm LU (A618, 47RH/RE, 48RE)

Performance Converter Kit BW-RK-4

Coming Soon

This unit requires the use of Sonnax Smart-Tech® big input shaft kit 22121B-08K.

  • Unit Size: 13.5"
  • Core: Borg Warner 310mm
  • Dampered: No
  • Lockup: Multi-Plate
  • Transmission Unit: A618, 47RH, 47RE, 48RE
  • Clutch Material: HTE
  • Turbine Hub Input Spline Count: 35
Bw rk 5 web

A618, 47RH/RE, 48RE (310mm) Multi-Plate Performance Converter, BorgWarner 310mm LU (A618, 47RH/RE, 48RE)

Performance Converter Kit BW-RK-5

Coming Soon

This unit requires the use of Sonnax Smart-Tech® big input shaft kit 22121B-08K.

  • Core: Borg Warner 310mm
  • Dampered: Yes
  • Lockup: Yes
  • Transmission Unit: A618, 47RH, 47RE, 48RE
  • Clutch Material: HTE
  • Turbine Hub Input Spline Count: 35
76656 01k

4R70E, 4R70W, 4R75E, 4R75W, AODE

Smart-Tech® Direct Clutch Drum & Shaft Kit 76656-01K

Fits all 2.84/1.55 gear sets. Can be used with 2.40/1.46 gear sets when late AODE sun gear is substituted. Early AOD sun gears cannot be used due to smaller bore. Bore must be at least 1.120” to fit over shaft spline.

22121b 08k

47RE, 47RH, 48RE

Smart-Tech® Big Input Shaft Kit 22121B-08K

Coming Soon

Use of this kit requires installation of matching Sonnax performance converter kit BW-RK-4 or BW-RK-5.