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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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: Tomorrow

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Sonnax 10-Clutch Drum Kits 28756-01K

10 Clutch Drum, Steel, GM, Powerglide, Kit

Part Number: SOX-28756-01K

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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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 )

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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: Tomorrow

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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: Tomorrow

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Sonnax Output Shaft Supports 28080K

Support, Output Shaft, Aluminum, Powerglide, Each

Part Number: SOX-28080K

5.0 out of 5 stars ( 2 )

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Sonnax 10-Clutch Drums 28756-25K

Drum Kit, 10-Clutch, Powerglide, Kit

Part Number: SOX-28756-25K

Not Yet Reviewed

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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: Tomorrow

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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: Tomorrow

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Sonnax Ring Gear Stabilizer Kits 28510-S2

Automatic Transmission Rebuild Components, Planetary Gear Stabilizer, GM, Powerglide, Kit

Part Number: SOX-28510-S2

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Sonnax Clutch Hubs 28304

Clutch Hub, Carbon Steel, Powerglide, Each

Part Number: SOX-28304

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Tomorrow

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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: Tomorrow

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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: Tomorrow

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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: Tomorrow

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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: Tomorrow

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Sonnax Anti-Wear Washer Kits 28510-AW

Ring Gear Washer, Powerglide, Kit

Part Number: SOX-28510-AW

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Sonnax Automatic Transmission Pump Bolts 28136

Automatic Transmission Rebuild Components, Front Pump Bolts, Powerglide, Set of 7

Part Number: SOX-28136

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Sonnax Wear Plates 28755-05

Automatic Transmission Rebuild Components, Wear Plate, Hardened Steel Replacement, Powerglide, Buick, Chevrolet, Oldsmobile, Pontiac, Each

Part Number: SOX-28755-05

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Sonnax Vacuum Modulator Plugs 28738-01K

Modulator Plug, GM, Powerglide, Kit

Part Number: SOX-28738-01K

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Sonnax 10-Clutch Drum Kit Replacement Components 28304-02

HUB, FWD CLTCH, TALL, HEAVY DUTY GM LUNINUM POWERGLIDE TRANS

Part Number: SOX-28304-02

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Sonnax Front Pump Stud Kits 28711-03K

Automatic Transmission Rebuild Components, Front Pump Stud Kits, Oil Pump Stud Type, Powerglide, Buick, Chevrolet, Oldsmobile, Pontiac, Kit

Part Number: SOX-28711-03K

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Sonnax Ring Gear Stabilizer Kits 28510-S3

Automatic Transmission Rebuild Components, Planetary Gear Stabilizer, GM, Powerglide, Kit

Part Number: SOX-28510-S3

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Sonnax Clutch Hubs 28304-SP

Clutch Hub, High Gear Position, Carbon Steel, without Lightening Holes, GM, Powerglide, Each

Part Number: SOX-28304-SP

Not Yet Reviewed

Estimated Ship Date: Feb 24, 2026 if ordered today

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Estimated Ship Date: Feb 24, 2026 if ordered today

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: Tomorrow

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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: Tomorrow

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