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 134

Sonnax Premium Planetary Assemblies 28180G-01

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 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Sonnax Servo Piston Kits 28821-20K

Billet Servo, Low Gear, Billet Aluminum, Powerglide, Kit

Part Number: SOX-28821-20K

5.0 out of 5 stars ( 6 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Sonnax Slip Yokes T3-3-6081HP

Yoke, Powerglide Transmission, Chromoly, 27-Spline, Spicer 1350 Joint Style, 5.47 in. Length, Each

Part Number: SOX-T3-3-6081HP

4.7 out of 5 stars ( 10 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Sonnax Servo Piston Kits 28821-10K

Billet Servo, Low Gear, Billet Aluminum, Powerglide, Kit

Part Number: SOX-28821-10K

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Sonnax Automatic Transmission Oil Pump Gears 28201

Gear, Oil Pump, GM, Powerglide, Set

Part Number: SOX-28201

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

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: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Sonnax Output Shaft Supports 28080K

Support, Output Shaft, Aluminum, Powerglide, Each

Part Number: SOX-28080K

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Sonnax Clutch Hubs 28304

Clutch Hub, Carbon Steel, Powerglide, Each

Part Number: SOX-28304

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Sonnax 10-Clutch Drum, Hub, and Piston Kits 28756-08K

10 Clutch Drum, Steel, GM, Powerglide, Kit

Part Number: SOX-28756-08K

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Sonnax Shift Levers 28431-05K

Automatic Transmission Shift Lever, Bolt-Together, 4 Hole, Steel, Zinc Plated, Chevy, Powerglide, Each

Part Number: SOX-28431-05K

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Sonnax 10-Clutch Drums 28756-25K

Drum Kit, 10-Clutch, Powerglide, Kit

Part Number: SOX-28756-25K

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Sonnax Automatic Transmission Oil Pump Bushings 34034T-01

Oil Pump Bushing, Automatic Transmission Rebuild Component, AT540, Powerglide, TH350, TH400, Each

Part Number: SOX-34034T-01

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Sonnax Automatic Transmission Oil Pump Bushings 77005T

Automatic Transmission Oil Pump Bushing, 200-4R, 4L60, 4L60E, 4L65E, 4L70E, 5L40E, 5L50E, Powerglide, Each

Part Number: SOX-77005T

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Sonnax Stator Support Shafts 28154S

Stator Support Shaft, GM, Powerglide, Each

Part Number: SOX-28154S

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Sonnax Front Stator Support Bushings 35007A

Front Stator Support Bushing, 0.500 in. Width, 1.004 in. I.D., 4L60, 4L60E, 4l65E, 4L70, Powerglide, Each

Part Number: SOX-35007A

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Sonnax Servo Return Springs 28133-HD

Automatic Transmission Servo Springs, Servo Return Springs, GM, Powerglide, Each

Part Number: SOX-28133-HD

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Sonnax 10-Clutch Drum, Hub, and Piston Kits 28756-15K

10 Clutch Drum, Steel, GM, Powerglide, Kit

Part Number: SOX-28756-15K

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Sonnax Slip Yokes T2-3-6081HP

Yoke, Powerglide Transmission, Forged Steel, 27-Spline, Spicer 1310 Joint Style, 5.47 in. Length, Each

Part Number: SOX-T2-3-6081HP

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Sonnax Thrust Bearings 28321

Thrust Bearing, Replacement, Chevy, Powerglide, Each

Part Number: SOX-28321

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

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: May 26, 2026 if ordered today

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Estimated Ship Date: May 26, 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

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Sonnax Servo Piston Seals 18608T

Automatic Transmission Servo Sealing Rings, Replacement PTFE Seal for OEM and Sonnax Powerglide Servos, GM, Powerglide, Each

Part Number: SOX-18608T

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Sonnax Band Adjustment Screw Kits 28612-01K

Band Adjustment Screw Kit, Automatic Transmission Rebuild Component, Chevy, Powerglide, Kit

Part Number: SOX-28612-01K

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Sonnax Reverse Piston Seal Kits 28761-01SK

Automatic Transmission Rebuild Components, Reverse Piston Seal Kits, Powerglide, Pair

Part Number: SOX-28761-01SK

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

Sonnax Retaining Rings 28124

Reverse Clutch Pack Retaining Ring, Automatic Transmission Rebuild Component, Powerglide, Each

Part Number: SOX-28124

Not Yet Reviewed

Estimated Ship Date: Monday 4/27/2026 if shipped by air

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Estimated Ship Date: Monday 4/27/2026 if shipped by air

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