Sonnax Transmission Parts

Since 1978, Sonnax Transmission Company has specialized in the cutting-edge design of top-quality performance and OEM replacement transmission parts. Summit Racing carries...

Since 1978, Sonnax Transmission Company has specialized in the cutting-edge design of top-quality performance and OEM replacement transmission parts. Summit Racing carries a large selection of Sonnax transmission and drivetrain parts, including slip yokes, throttle cable brackets, input drum reinforcement kits, hydraulic line pressure booster kits, and more. Order your Sonnax transmission parts from Summit Racing today!

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Results 1 - 25 of 64

Sonnax Extreme-Duty Clutch Hub and Intermediate Shaft Assemblies 104680-36

INTERMEDIATE SHAFT

Part Number: SOX-10468036

Not Yet Reviewed

Estimated Ship Date: Today

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Sonnax Extreme-Duty Clutch Hub and Intermediate Shaft Assemblies 104680-45

Automatic Transmission Intermediate Shaft, 300M, Extreme Duty Hub, 4-5-6 CL, GM 6L80, 45T, Each

Part Number: SOX-104680-45

Not Yet Reviewed

Estimated Ship Date: Today

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Sonnax Premium Planetary Assemblies 28180G-01S

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

Part Number: SOX-28180G-01S

Not Yet Reviewed

Estimated Ship Date: Today

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Sonnax Extreme-Duty Clutch Hub and Intermediate Shaft Assemblies 104690-45

Automatic Transmission Intermediate Shaft, 300M, Extreme Duty Hub, 4-5-6 CL, GM 6L90, 45T, Each

Part Number: SOX-104690-45

Not Yet Reviewed

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Sonnax Premium Planetary Assemblies 180S-K

Automatic Transmission Gears, Premium Planetary Assembly, 1.80:1 Ratio, with 9310 Suns and Pinions, 12-Tooth, Steel, Powerglide, Kit

Part Number: SOX-180S-K

Not Yet Reviewed

Estimated Ship Date: Mar 19, 2026 if ordered today

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Estimated Ship Date: Mar 19, 2026 if ordered today

Sonnax Extreme Planetary Assemblies 28169G-06SP

PLANET ASY, 169, SHORT SHFT, 24T POWERGLIDE, ULTRA HI STR SHFT

Part Number: SOX-28169G-06SP

Not Yet Reviewed

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Sonnax Extreme Planetary Assemblies 28169G-06

PLANET ASY, 169, STD SFT.EXT, 24T GM POWERGLIDE

Part Number: SOX-28169G-06

Not Yet Reviewed

Estimated Ship Date: Mar 19, 2026 if ordered today

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Estimated Ship Date: Mar 19, 2026 if ordered today

Sonnax Extreme Planetary Assemblies 28158G-NS

1.58 RATIO EXTRME PLANETARY KT

Part Number: SOX-28158G-NS

Not Yet Reviewed

Estimated Ship Date: Mar 19, 2026 if ordered today

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Estimated Ship Date: Mar 19, 2026 if ordered today

Sonnax Extreme Planetary Assemblies 28165G-06

PLANET ASY, 165, LONG SHFT, 24T POWERGLIDE

Part Number: SOX-28165G-06

Not Yet Reviewed

Estimated Ship Date: Mar 19, 2026 if ordered today

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Estimated Ship Date: Mar 19, 2026 if ordered today

Sonnax Extreme Planetary Assemblies 28180G-06

PLANET ASY, 180, STD SFT.EXT, 24T POWERGLIDE

Part Number: SOX-28180G-06

Not Yet Reviewed

Estimated Ship Date: Mar 19, 2026 if ordered today

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Estimated Ship Date: Mar 19, 2026 if ordered today

Sonnax Extreme Planetary Assemblies 28180G-06SP

PLANET ASY, 180, SHORT SHFT, 24T POWERGLIDE, ULTRA HI STR SHFT

Part Number: SOX-28180G-06SP

Not Yet Reviewed

Estimated Ship Date: Mar 19, 2026 if ordered today

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Estimated Ship Date: Mar 19, 2026 if ordered today

Sonnax Extreme Planetary Assemblies 28180G-NS

EXTREME PLANETARY ASSY KIT

Part Number: SOX-28180G-NS

Not Yet Reviewed

Estimated Ship Date: Mar 19, 2026 if ordered today

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Estimated Ship Date: Mar 19, 2026 if ordered today

Sonnax Extreme Planetary Assemblies 180S3-24K

GEARSET-EXTREME (1.80 RATIO)

Part Number: SOX-180S3-24K

Not Yet Reviewed

Estimated Ship Date: Mar 19, 2026 if ordered today

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Estimated Ship Date: Mar 19, 2026 if ordered today

Sonnax Extreme Planetary Assemblies 158S3-24K

GEAR SET

Part Number: SOX-158S3-24K

Not Yet Reviewed

Estimated Ship Date: Mar 19, 2026 if ordered today

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Estimated Ship Date: Mar 19, 2026 if ordered today

Sonnax Extreme Planetary Assemblies 169S3-24K

GEARSET-EXTREME (1.69 RATIO)

Part Number: SOX-169S3-24K

Not Yet Reviewed

Estimated Ship Date: Mar 19, 2026 if ordered today

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Estimated Ship Date: Mar 19, 2026 if ordered today

Sonnax Transmission Company Automatic Transmission Rebuild Components 77918S-1K

SUPPORT ASSEMBLY 4L60E

Part Number: SOX-77918S-1K

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 19, 2026 if ordered today

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Estimated Ship Date: Mar 19, 2026 if ordered today

Sonnax Transmission Company Automatic Transmission Gears 28165G-NS

PLANET ASSEMBLY

Part Number: SOX-28165GNS

Not Yet Reviewed

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Sonnax Smart-Tech Drum Modules 34555-01K

Automatic Transmission Drum, Smart-Tech Drum Module, Aluminum, Chevy, TH400, Kit

Part Number: SOX-34555-01K

Not Yet Reviewed

Estimated Ship Date: Today

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Sonnax SmartShell Heavy-Duty Reaction Shell Kits 77749-02K

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: Today

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Sonnax Automatic Transmission Case Bushings 34006-SPB

Automatic Transmission Case Bushing, Thrust Bearing, Two 0.010 in. Shims, Two 0.015 in. Shims, GM, 4L80E, 4L85E, TH400, Kit

Part Number: SOX-34006-SPB

5.0 out of 5 stars ( 13 )

Estimated Ship Date: Today

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Sonnax Clutch Backing Plates 74140-01K

Clutch Backing Plate, 4L60, 700R4, 4L60E, 4L65E, 4L70E, Kit

Part Number: SOX-74140-01K

5.0 out of 5 stars ( 8 )

Estimated Ship Date: Today

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Sonnax Smart-Tech Direct Clutch Drum and Shaft Kits 76656-01K

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: Today

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Sonnax Input Housing Sleeve Kits 77733-52K

Automatic Transmission Rebuild Components, Forward, Input Housing Sleeve, 4L60, 4L60E, 4L65E, 4L70E, Kit

Part Number: SOX-77733-52K

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Sonnax Clutch Apply Piston Kits 104960-01K

Automatic Transmission Rebuild Component, Servo Piston, Clutch Apply Piston, 4-5-6 Gear Clutches, 6L80, 6L90, Kit

Part Number: SOX-104960-01K

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Sonnax Clutch Backing Plates 34144HD-02

Clutch Backing Plate, 4L80-E, 4L85-E, Kit

Part Number: SOX-34144HD-02

Not Yet Reviewed

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