Sonnax Transmission Company Parts and Accessories

Shift Improver Performance Pack, 4L60E, 4L65E, 4L70E, Buick, Chevy, GMC, Oldsmobile, Pontiac, Kit

Part Number: SOX-HP-4L60E-01

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 12/15/2025

• Free Shipping
• $10 Summit Bucks

Automatic Transmission Shift Kits, TCC Zip Kit, with O-Ring End Plugs, Converter Limit Valve, Regulator/Shuttle, Cadillac, Chevy, GMC, 8L45, 8L90, Kit

Part Number: SOX-8L458L90TCCZ

Not Yet Reviewed

Estimated Ship Date: Monday 12/15/2025

• Free Shipping
• $10 Summit Bucks

Automatic Transmission Rebuild Components, Governor, Blue Gear, GM, 4L60, Gasoline Engines, Each

Part Number: SOX-730

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Monday 12/15/2025

• Free Shipping
• $10 Summit Bucks

Automatic Transmission Shift Kits, Shift Zip Kit, with Clutch Valves, Accumulator Pistons, Spring, Sleeves, Cadillac, Chevy, GMC, 8L45, 8L90, Kit

Part Number: SOX-8L458L90SHIF

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/15/2025

• Free Shipping
• $10 Summit Bucks

*REMAN TEHCM

Part Number: SOX-GM6LTEHCMC6

4.0 out of 5 stars ( 2 )

Estimated Ship Date: Dec 29, 2025 if ordered today

• Core Charge $150.00
• Free Shipping
• $10 Summit Bucks

GOVERNOR

Part Number: SOX-731

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 12/15/2025

• Free Shipping
• $10 Summit Bucks

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: Monday 12/15/2025

• $10 Summit Bucks