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Frequently Asked Questions

Transmission Lookup



The 4T40-E and 4T45-E are a series of automatic transaxles from General Motors. Designed for transverse engine configurations, the series includes 4 forward gears. The 4Txx family replaced the Turbo-Hydramatic 125 transverse three speed automatic introduced in 1980.

The "-E" series is electronically controlled and features an automatic overdrive transaxle with an electronically controlled torque converter clutch. Since the non-electronic versions of these transmissions does not exist, it is conventional to refer to these models as simply 4T40 and 4T45, leaving out the "-E".
4T40E,4T45E Transmission Bands, High Performance and Stock
4T40E,4T45E,GM,Transmission Bands, High Performance and Stock
Filters/Filter Kit
4T40E,4T45E,GM,Filters and Filter Kits
Master Overhaul Kits (steels included)
4T40E,4T45E,GM,Master Overhaul Kits (steels included)
Banner/Master Rebuild Kits (no steels)
Gaskets,O-Rings,Sealing Rings
4T40E,4T45E,GM,Paper Gaskets,O-Rings,Sealing Rings and Kits
Drums,Clutch Hubs
4T40E,4T45E,GM,Drums and Clutch Hubs
Friction & Steel Kits
4T40E,4T45E,GM,Friction and Steel Kits
Shift, Tow Correction Kits
4T40E,4T45E,GM,Shift, Tow Correction Kits
4T40E,4T45E,GM,Planets and Geartrain Kits
Sun Gears,Shells,Supports
4T40E,4T45E,GM,Sun Gears,Shells,Supports and Kits
Solenoids,Electrical Components
4T40E,4T45E,GM,Electrical Components
4T40E,4T45E,GM,Pump Body Assemblies
Sprags/One Way Clutches
4T40E,4T45E,GM,Sprags,Sprag Assemblies and One Way Clutches
4T40E,4T45E,GM,Bushing Kits
Valve Body
4T40E,4T45E,GM,Valve Body Assemblies
4T40E,4T45E,Thrust Washers,Shims/Kits
Misc. Components/Kits
4T40E,4T45E,GM, Miscellaneous Components
Technical Manuals
4T40E,4T45E,GM,Transmission Rebuild Manuals,DVDs,and Mini CDs
Transmission Pans
4T40E,4T45E,GM,Transmission Pans Stock and Deep
Stall Converters
4T40E,4T45E,GM,Torque Converters,High Performance Stall Converters
Cases, Housings/Components
4T40E,4T45E,GM,Cases,Housings and Components
Transmission Tools
4T40E,4T45E,GM,Transmission Tools,Problem Solvers
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