Sonnax Transmission Company Transmissions

Automatic Transmission Rebuild Kits, Sure Cure Kit, with O-Ring Plug Ends, Boost Valve, Bushings, Springs, Cadillac, Chevy, GMC, 4L80-E, 4L85-E, Kit

Part Number: SOX-SC4L80E

4.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

• $10.00 Summit Bucks

Automatic Transmission Bushings, Rear Stator Support, PTFE Lined, GM TH700-R4, 4L60, 4L60E, 4L65E, 4L70E, MD8, Each

Part Number: SOX-77002BT-01

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

• $10.00 Summit Bucks

D Clutch Hub

Part Number: SOX-35570-70K

Not Yet Reviewed

Estimated Ship Date: Dec 11, 2025 if ordered today

• Free Shipping
• $10.00 Summit Bucks
• Special Order

Automatic Transmission Bushings, Wide Reaction Sun Gear, GM 4L60, 4L60E, 4L65E, 4L70E, Each

Part Number: SOX-77010-01

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Today

• $10.00 Summit Bucks

Automatic Transmission Rebuild Component, Accumulator Sleeve, TH350, TH350C, Kit

Part Number: SOX-3571901K

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

• $10.00 Summit Bucks

Backing Pressure Plate; ZF8HP-45

Part Number: SOX-35577-45

Not Yet Reviewed

Estimated Ship Date: Dec 11, 2025 if ordered today

• $10.00 Summit Bucks
• Special Order

Line Pressure Booster Kit, Hydraulic, Valve, Sleeve, O-rings, GM, TH400/425, Kit

Part Number: SOX-34910-01K

Not Yet Reviewed

Estimated Ship Date: Today

• $10.00 Summit Bucks

Heavy Duty "A" Clutch Backing Plate

Part Number: SOX-35570-50

Not Yet Reviewed

Estimated Ship Date: Dec 11, 2025 if ordered today

• $10.00 Summit Bucks
• Special Order

Piston, Accumulator, Billet Aluminum, Chrysler, Chrysler, 42RE, 46RE, 46RH, 47RH, 47RE, 47RH, 48RE, Each

Part Number: SOX-22841-04K

4.29 out of 5 stars ( 7 )

Estimated Ship Date: Today

• $10.00 Summit Bucks

Automatic Transmission Accumulator Pistons, Replacement Servos, Billet Aluminum, Replacement Piston for Sonnax Servo Piston Kits, Chevy, Powerglide

Part Number: SOX-28821-02

Not Yet Reviewed

Estimated Ship Date: Today

• $10.00 Summit Bucks

Clutch Hub Shims, 4L80E, 4L85E, TH400, TH425, Set of 10

Part Number: SOX-34006-05

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

• $10.00 Summit Bucks

SHAFT

Part Number: SOX-74678S-HD

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

• Free Shipping
• $10.00 Summit Bucks

BIG INPUT SHAFT KIT

Part Number: SOX-353532-01K

Not Yet Reviewed

Estimated Ship Date: Today

• Free Shipping
• $10.00 Summit Bucks

INPUT SHAFT

Part Number: SOX-30280-01

Not Yet Reviewed

Estimated Ship Date: Today

• Free Shipping
• $10.00 Summit Bucks

Valve Kit

Part Number: SOX-105740-58K

Not Yet Reviewed

Estimated Ship Date: Dec 8, 2025 if ordered today

• $10.00 Summit Bucks
• Special Order

Automatic Transmission Rebuild Components, Low/Reverse Sprag Rebuild Kit, Steel, 6L80, Kit

Part Number: SOX-104642-80SK

Not Yet Reviewed

Estimated Ship Date: Today

• $10.00 Summit Bucks

Pump Slide Spring, 6L80, 6L90, Each

Part Number: SOX-104534-HD

Not Yet Reviewed

Estimated Ship Date: Today

• $10.00 Summit Bucks

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: Today

• $10.00 Summit Bucks

SOLENOID BLOCK

Part Number: SOX-56954L-C

Not Yet Reviewed

Estimated Ship Date: Dec 2, 2025 if ordered today

• Free Shipping
• $10.00 Summit Bucks
• Special Order

TCC Regulator and Isolator Valve Kits, 4L80E, 4L85E, Kit

Part Number: SOX-34994-01K

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

• $10.00 Summit Bucks

PLANET ASY, 158, LONG SHFT, 24T Planetary Set, 1.58 Ratio W/9310 Gears, Long, Powerglide

Part Number: SOX-28158G-06

Not Yet Reviewed

Estimated Ship Date: Dec 2, 2025 if ordered today

• Free Shipping
• $10.00 Summit Bucks
• Special Order

Servo Piston, Low Gear Type, Billet Aluminum, Servo Cover, Pipe Plug, Two Seal Rings, GM, Powerglide, Kit

Part Number: SOX-28821-05K

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

• $10.00 Summit Bucks

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: Today

• $10.00 Summit Bucks

Automatic Transmission Rebuild Components, "C" Ratio Servo Seals, C4, C5, Kit

Part Number: SOX-K13259C-SK

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

• $10.00 Summit Bucks

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

Part Number: SOX-77704S

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

• $10.00 Summit Bucks