Sonnax Transmission Company Transmissions

Clutch Hub, Full, Forged, Extreme Duty, GM, 4L80E, 4L85E, TH400, TH425, Kit

Part Number: SOX-34322-02K

4.86 out of 5 stars ( 7 )

Estimated Ship Date: Monday 11/3/2025

• Free Shipping
• $10.00 Summit Bucks

Automatic Transmission Accumulator Pistons, Pinless, Aluminum, Buick, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: SOX-77998-03K

5.0 out of 5 stars ( 14 )

Estimated Ship Date: Monday 11/3/2025

• $10.00 Summit Bucks

INPUT SHAFT

Part Number: SOX-77733-11SB

Not Yet Reviewed

Estimated Ship Date: Monday 11/3/2025

• Free Shipping
• $10.00 Summit Bucks

Automatic Transmission Rebuild Components, Bearing/Race Kit, Sun/Internal, Center Support/Sun, GM, TH400/4L80-E/4L85-E, Kit

Part Number: SOX-SBK-G10

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 11/3/2025

• $10.00 Summit Bucks

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 11/3/2025

• $10.00 Summit Bucks

Automatic Transmission Valve Body, Remanufactured, Cast Iron, Standard Shift Pattern, 5R44E, 5R55E, Each

Part Number: SOX-F056

Not Yet Reviewed

Estimated Ship Date: Monday 11/3/2025

• Core Charge $50.00
• Free Shipping
• $10.00 Summit Bucks

Line Pressure Booster Kit, Hydraulic, Valve, Sleeve, Pressure Regulator Spring, O-rings, GM, TH400, Kit

Part Number: SOX-400-LB1

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 11/3/2025

• $10.00 Summit Bucks

SEPARATOR PLATE

Part Number: SOX-35740-048

Not Yet Reviewed

Estimated Ship Date: Monday 11/3/2025

• $10.00 Summit Bucks

Pressure Regulator Valve, PTFE O-Ring, TH400, TH425, Each

Part Number: SOX-34910-03K

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 11/3/2025

• $10.00 Summit Bucks

Spring, 1-2 Accumulator, Purple, 5/Set

Part Number: SOX-74926

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 11/3/2025

• $10.00 Summit Bucks

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

Part Number: SOX-28510-S2

Not Yet Reviewed

Estimated Ship Date: Monday 11/3/2025

• Free Shipping
• $10.00 Summit Bucks

Pressure Booster, Hydraulic Line, TV Boost Valve, Ford, 4R70W, 4R75W, Kit

Part Number: SOX-4R70W-LB1

Not Yet Reviewed

Estimated Ship Date: Monday 11/3/2025

• $10.00 Summit Bucks

Seal Kit, 4L60, 700R4, 4L60E, 4L65E, 4L70E, Kit

Part Number: SOX-77911-03SK

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 11/3/2025

• $10.00 Summit Bucks

High Clutch Return Springs, Automatic Transmission Rebuild Components, Chevy, Powerglide, Set of 24

Part Number: SOX-28320

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 11/3/2025

• $10.00 Summit Bucks