Sonnax Transmission Company Parts and Accessories

Automatic Transmission Gears, Premium, Planetary Type, Steel, 1.80:1 First Gear Ratio, Long Output Shaft, GM, Powerglide, Kit

Part Number: SOX-28180G-01

Not Yet Reviewed

Estimated Ship Date: Monday 12/8/2025

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• $10 Summit Bucks

Flange Yoke, Aluminum, 1350, 3-Bolt Flange, Each

Part Number: SOX-T35-GMFD-01K

5.0 out of 5 stars ( 8 )

Estimated Ship Date: Monday 12/8/2025

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• $10 Summit Bucks

Shift Kit, Zip Kit, Chevy, Kit

Part Number: SOX-6L45-6L90ZIP

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 12/8/2025

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• $10 Summit Bucks

Yoke, 4L80E, TH400, Chromoly, 32-Spline, 1350 U-Joint, 6.370 in. Long, Each

Part Number: SOX-T3-3-2431HP

4.89 out of 5 stars ( 9 )

Estimated Ship Date: Monday 12/8/2025

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• $10 Summit Bucks

Sun Shell, SmartShell, Heavy Duty Reaction, 4L60, 4L60E, 4L65E, 4L70E, Each

Part Number: SOX-77749-02K

4.71 out of 5 stars ( 21 )

Estimated Ship Date: Monday 12/8/2025

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• $10 Summit Bucks

Yoke, FMX, T-56, Chromoly, 31-Spline, Spicer 1350 Joint Style, 6.44 in. Length

Part Number: SOX-T3-3-2491HP

4.94 out of 5 stars ( 16 )

Estimated Ship Date: Monday 12/8/2025

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• $10 Summit Bucks

Servo, Externally Adjustable Low/Reverse, Aluminum, Blue Anodized, GM, TH400, Kit

Part Number: SOX-34914-20K

Not Yet Reviewed

Estimated Ship Date: Monday 12/8/2025

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• $10 Summit Bucks

Automatic Transmission Output Shaft, Heavy-Duty, 300M Steel, RWD Only, GM, 4L60E, 4L65E, 4L70E, Each

Part Number: SOX-74678L-HD

Not Yet Reviewed

Estimated Ship Date: Monday 12/8/2025

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• $10 Summit Bucks

Shift Improver Performance Pack, 4L60E, 4L65E, 4L70E, Buick, Chevy, GMC, Oldsmobile, Pontiac, Kit

Part Number: SOX-HP-4L60E-01

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 12/8/2025

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• $10 Summit Bucks

Servo, Externally Adjustable Low/Reverse, Aluminum, Blue Anodized, GM, 4L80-E, 4L85-E, Kit

Part Number: SOX-34914-28K

Not Yet Reviewed

Estimated Ship Date: Monday 12/8/2025

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• $10 Summit Bucks

Automatic Transmission Rebuild Components, Reaction Shaft, GM, 4L60, 4L60E, 4L65E, 4L70E, Kit

Part Number: SOX-74602-01K

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 12/8/2025

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• $10 Summit Bucks

Servo, Super-Hold, 4th Gear, Billet Aluminum, GM, 4L60, 4L60E, 4L65E, 4L70E, Kit

Part Number: SOX-77767K

4.78 out of 5 stars ( 9 )

Estimated Ship Date: Monday 12/8/2025

• $10 Summit Bucks

Yoke, Slip, 32 Spline, Chromoly, Spicer 1350, 6.37 in. Length, Borg Warner/GM/Muncie/Saginaw, Each

Part Number: SOX-T332431CBHP

4.8 out of 5 stars ( 10 )

Estimated Ship Date: Monday 12/8/2025

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• $10 Summit Bucks

Yoke, Forged Chromoly, 1350, TH400, 32-Spline, 5.380 in. Barrel Length, Each

Part Number: SOX-T3-3-5571HP

5.0 out of 5 stars ( 9 )

Estimated Ship Date: Monday 12/8/2025

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• $10 Summit Bucks

Servo, Super-Hold, 2nd Gear, Billet Aluminum, GM, 4L60, 4L60E, 4L65E, 4L70E, Kit

Part Number: SOX-77911-03K

5.0 out of 5 stars ( 9 )

Estimated Ship Date: Monday 12/8/2025

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• $10 Summit Bucks

10 Clutch Drum, Steel, GM, Powerglide, Kit

Part Number: SOX-28756-01K

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/8/2025

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• $10 Summit Bucks

Yoke, 4L60, 700R4, Chromoly, 27-Spline, Spicer 1350 Joint Style, 6.94 in. Length, Each

Part Number: SOX-T3-3-4281HP

5.0 out of 5 stars ( 8 )

Estimated Ship Date: Monday 12/8/2025

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• $10 Summit Bucks

Automatic Transmission Rebuild Components, Governor, Blue Gear, GM, 4L60, Gasoline Engines, Each

Part Number: SOX-730

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Monday 12/8/2025

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• $10 Summit Bucks

Automatic Transmission Rebuild Components, Forward Clutch Piston, Billet, GM, 6L80, 6L90, Each

Part Number: SOX-104984-01

2.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/8/2025

• $10 Summit Bucks

Governor, TH350, TH350C, Each

Part Number: SOX-350

4.14 out of 5 stars ( 7 )

Estimated Ship Date: Monday 12/8/2025

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• $10 Summit Bucks

Clutch Drum, Smart-Tech, Direct, Steel, Ford, 4R70E, 4R70W, 4R75E, 4R75W, Kit

Part Number: SOX-76656-01K

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/8/2025

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• $10 Summit Bucks

Case Saver, GM TH400, Early 4L80E, Each

Part Number: SOX-34762-10

4.25 out of 5 stars ( 4 )

Estimated Ship Date: Monday 12/8/2025

• $10 Summit Bucks

Flange Yoke, Aluminum, Each

Part Number: SOX-T3-2-949A

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Monday 12/8/2025

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• $10 Summit Bucks

Automatic Transmission Rebuild Components, Pressure Switch Rebuild Kit, GM, 6L45, 6L50, 6L80, 6L90, 6T70, 6T75, Kit

Part Number: SOX-124740-70K

Not Yet Reviewed

Estimated Ship Date: Monday 12/8/2025

• $10 Summit Bucks

Servo Kit, Billet Aluminum, Ford, C4, C5, Kit

Part Number: SOX-K13259C-1

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/8/2025

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• $10 Summit Bucks