Sonnax Transmission Company Parts and Accessories

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

Part Number: SOX-77998-03K

5.0 out of 5 stars ( 15 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Automatic Transmission Clutch Friction Plates, 4,5,6, .090 in. Thick, 6L80, 6L90, Powerglide, Each

Part Number: SOX-104120-02

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Automatic Transmission Clutch Friction Plates, 4,5,6, .078 in. Thick, 6L80, 6L90, Powerglide, Each

Part Number: SOX-104120-01

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

FORWARD/REVERSE ABUSE VALVE

Part Number: SOX-7775435K

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Automatic Transmission Clutch Friction Plates, 4,5,6, .060 in. Thick, 6L80, 6L90, Powerglide, Each

Part Number: SOX-104120-03

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

TCC APPLY VALVE KIT

Part Number: SOX-77805E-K

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Automatic Transmission Rebuild Components, Accumulator Check Valve, GM, 4L60, 4L60E, 4L65E, 4L70E, Each

Part Number: SOX-74480D

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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 2/23/2026 if shipped by air

Automatic Transmission Rebuild Components, Servo Release Check Valve, GM, 4L60, 4L60E, 4L65E, 4L70E, Kit

Part Number: SOX-77701-076

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Automatic Transmission Bushings, Front Sun Gear, GM Powerglide, Each

Part Number: SOX-8436

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Case Bushing, TH400, 4L80E, 4L85E, Each

Part Number: SOX-34006-SP

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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

Part Number: SOX-28709

4.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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

Part Number: SOX-28124

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Automatic Transmission Carrier Thrust Washers, 2.749 in. O.D., 0.106 in. Thickness, 2.082 in. I.D., Ford, GM, Each

Part Number: SOX-56241

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Automatic Transmission Accumulator Pistons, Pinless, Aluminum, Buick, Cadillac, Chevy, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, Saab, Each

Part Number: SOX-77987-01K

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Pressure Booster, Hydraulic Line, TV Boost Valve, GM, 200-4R, 4L60, Kit

Part Number: SOX-700R4-LB1

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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

Part Number: SOX-74926

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

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

Part Number: SOX-124740-TL70

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Torx Plus Bit, 4L60-E, 4L65-E, 4L70-E, Bellhousing Bolt Socket, Steel, Each

Part Number: SOX-77000-HBK

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

3-4 Clutch Boost Springs, GM, 4L60, 4L60E, 4L65E, 4L70E, Set of 10

Part Number: SOX-77763-01

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Accumulator Spring, Enhanced Performance, 1-2 Accumulator, Each

Part Number: SOX-77704S

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Rear Reaction Carrier Support Shims, TH350, TH350C, 4L60, 4L60E, 4L65E, 4L70E, Set of 10

Part Number: SOX-77406-10

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Accumulator Piston, Aluminum, Forward, GM, 4L60E, 4L65E, 4L70E, Each

Part Number: SOX-74927-AP

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Pressure Booster, Hydraulic Line, TV Boost Valve, GM, 200-4R, 4L60, O-Ring Style, Kit

Part Number: SOX-77917-500

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air

Automatic Transmission Servo Kits, Reverse Servo Spacer, Steel, Natural Finish, with Spring, Washers, E-Clip, GM, 4L80-E, 4L85-E, Kit

Part Number: SOX-34528-01K

Not Yet Reviewed

Estimated Ship Date: Monday 2/23/2026 if shipped by air