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TCI Automotive Transmissions, Torque Converters & Parts

TCI Auto believes that performance is defined by results—both on the track and on the street. That’s why every TCI transmission and drivetrain component is designed,...

TCI Auto believes that performance is defined by results—both on the track and on the street. That’s why every TCI transmission and drivetrain component is designed, built, and tested by hardcore racers and street performance enthusiasts. We carry the complete line of TCI street performance, drag race, circle track, RV, and truck automatic transmissions, so you’re sure to find one that’s right for you. Plus, we have TCI torque converters, valve bodies, flywheels, flexplates, trans-brakes, harmonic dampers, transmission fluid, accessories, and a lot more. You can rely on TCI Auto products to deliver the most horsepower...

TCI Auto believes that performance is defined by results—both on the track and on the street. That’s why every TCI transmission and drivetrain component is designed, built, and tested by hardcore racers and street performance enthusiasts. We carry the complete line of TCI street performance, drag race, circle track, RV, and truck automatic transmissions, so you’re sure to find one that’s right for you. Plus, we have TCI torque converters, valve bodies, flywheels, flexplates, trans-brakes, harmonic dampers, transmission fluid, accessories, and a lot more. You can rely on TCI Auto products to deliver the most horsepower to your wheels.

Showing In Stock Items. Show All 45 Items.

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Results 1 - 25 of 32

TCI Speedometer Gear Housings 880042

Made in the USA

TCI Speedometer Gear Housings 880042

TCI Speedometer Gear Housings 880042

Speedometer Gear Housing, 34-39 Tooth Type, Aluminum, GM, TH400, Each

Part Number: TCI-880042

4.0 out of 5 stars ( 10 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

TCI Full Manual Valve Bodies 221201

Made in the USA

TCI Full Manual Valve Bodies 221201

TCI Full Manual Valve Bodies 221201

Transmission Valve Body, Full Manual, Reverse Shift Pattern, Engine Braking, Chevy, TH400, Each

Part Number: TCI-221201

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

TCI Full Manual Valve Bodies 221200

Made in the USA

TCI Full Manual Valve Bodies 221200

TCI Full Manual Valve Bodies 221200

Valve Body, Cast Iron, Full Manual, Forward Pattern, Engine Braking, Chevy, TH400, Each

Part Number: TCI-221200

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

TCI Trans-Brake Valve Body Kits 221500

Made in the USA

TCI Trans-Brake Valve Body Kits 221500

TCI Trans-Brake Valve Body Kits 221500

Valve Body, Full Manual, Reverse Pattern, Chevy, TH400, Each

Part Number: TCI-221500

4.57 out of 5 stars ( 7 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

TCI Speedometer Gear Housings 880043A

Made in the USA

TCI Speedometer Gear Housings 880043A

TCI Speedometer Gear Housings 880043A

Speedometer Gear Housing, 40-45 Tooth Type, Aluminum, GM, TH400, Each

Part Number: TCI-880043A

4.88 out of 5 stars ( 8 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

TCI Replacement Steel Transmission Pans 228011

Made in the USA

TCI Replacement Steel Transmission Pans 228011

TCI Replacement Steel Transmission Pans 228011

Automatic Transmission Pan, Stock, Steel, Chrome, GM TH400, Each

Part Number: TCI-228011

4.62 out of 5 stars ( 13 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

TCI Full Manual Valve Bodies 221100

Made in the USA

TCI Full Manual Valve Bodies 221100

TCI Full Manual Valve Bodies 221100

Valve Body, Full Manual, Reverse Pattern, Chevy, TH400, Each

Part Number: TCI-221100

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

TCI High Performance Intermediate Sprags 227900

Made in the USA

TCI High Performance Intermediate Sprags 227900

TCI High Performance Intermediate Sprags 227900

Sprag, Intermediate, Steel, 34-Element, GM, TH400, Each

Part Number: TCI-227900

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

TCI Transmission Pans 228000

Made in the USA

TCI Transmission Pans 228000

TCI Transmission Pans 228000

Automatic Transmission Pan, Deep, Aluminum, Natural, GM, TH400, Each

Part Number: TCI-228000

4.23 out of 5 stars ( 13 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

TCI Transmission Shields 980005

Made in the USA

TCI Transmission Shields 980005

TCI Transmission Shields 980005

Automatic Transmission Shield, Case, Aluminum, Blue Powdercoated, Chevy, TH400, Kit

Part Number: TCI-980005

3.69 out of 5 stars ( 13 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

TCI Transmission Pans 228010

Made in the USA

TCI Transmission Pans 228010

TCI Transmission Pans 228010

Automatic Transmission Pan, Stock, Aluminum, Polished, GM, TH400, Each

Part Number: TCI-228010

3.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

TCI TH400 Direct Piston Release Springs 221600

Made in the USA

TCI TH400 Direct Piston Release Springs 221600

TCI TH400 Direct Piston Release Springs 221600

Direct Springs for TH400 High Gear(16)

Part Number: TCI-221600

3.5 out of 5 stars ( 2 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

TCI Transmission Shields 980000

Made in the USA

TCI Transmission Shields 980000

TCI Transmission Shields 980000

Automatic Transmission Shield, Case, Aluminum, Red Powdercoated, Chevy, TH400, Kit

Part Number: TCI-980000

3.4 out of 5 stars ( 5 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

TCI Transmission Slip Yokes 965300

Made in the USA

TCI Transmission Slip Yokes 965300

TCI Transmission Slip Yokes 965300

Transmission Yoke, Cast Steel, N3R, 32 Spline, GM, TH400, Each

Part Number: TCI-965300

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

TCI Transmission Technical Overhaul Manuals 892700

Made in the USA

TCI Transmission Technical Overhaul Manuals 892700

TCI Transmission Technical Overhaul Manuals 892700

Book, "General Motors THM 400 Tech Tran Manual", 96 Pages, Paperback, Each

Part Number: TCI-892700

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

TCI Valve Body Gaskets GSK221500

Made in the USA

TCI Valve Body Gaskets GSK221500

TCI Valve Body Gaskets GSK221500

Gasket, Valve Body, GM, TH400, Each

Part Number: TCI-GSK221500

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

TCI Valve Body Gaskets GSK221201

Made in the USA

TCI Valve Body Gaskets GSK221201

TCI Valve Body Gaskets GSK221201

Valve Body Gasket, Full Manual, Reverse Pattern, Fiber, TH400, Kit

Part Number: TCI-GSK221201

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

TCI Automatic Transmission Servo Sealing Rings 243800

Made in the USA

TCI Automatic Transmission Servo Sealing Rings 243800

TCI Automatic Transmission Servo Sealing Rings 243800

Servo Sealing Ring, GM, TH400, Kit

Part Number: TCI-243800

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

TCI Thrust Washer Kits 243600

Made in the USA

TCI Thrust Washer Kits 243600

TCI Thrust Washer Kits 243600

Kit Thrust Washers GM TH400

Part Number: TCI-243600

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

TCI Sprag and Drum Assemblies 223600

Made in the USA

TCI Sprag and Drum Assemblies 223600

TCI Sprag and Drum Assemblies 223600

Automatic Transmission Direct Drum, Steel, Vaccu Melt 300 Input Shaft, Chevy, TH400, Kit

Part Number: TCI-223600

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

TCI PRO-X Transmission Overflow Canisters 228005

Made in the USA

TCI PRO-X Transmission Overflow Canisters 228005

TCI PRO-X Transmission Overflow Canisters 228005

Transmission Overflow Tank, Pro-X, Aluminum, Black, 1 qt. Capacity, GM TH400, Each

Part Number: TCI-228005

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

TCI PRO-X TH400 Center Support Rings 223603

Made in the USA

TCI PRO-X TH400 Center Support Rings 223603

TCI PRO-X TH400 Center Support Rings 223603

PRO-X TH400 CENTER SUPPORT RING

Part Number: TCI-223603

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 if ordered today

TCI Auto Automatic Transmission Cases 210002

Made in the USA

TCI Auto Automatic Transmission Cases 210002

TCI Auto Automatic Transmission Cases 210002

CASE, TH-400 REID SFI

Part Number: TCI-210002

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 if ordered today

TCI Automatic Transmission Clutch Steels 224712

Made in the USA

TCI Automatic Transmission Clutch Steels 224712

TCI Automatic Transmission Clutch Steels 224712

TH400 FWD KOL .063" (7)

Part Number: TCI-224712

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

...Loading

Estimated Ship Date: May 18, 2026 if ordered today

TCI Automatic Transmission Clutch Steels 224512

Made in the USA

TCI Automatic Transmission Clutch Steels 224512

TCI Automatic Transmission Clutch Steels 224512

TH400 INT STEEL .063" (5)

Part Number: TCI-224512

Not Yet Reviewed

Estimated Ship Date: May 18, 2026 if ordered today

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Estimated Ship Date: May 18, 2026 if ordered today

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