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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...

Showing In Stock Items. Show All 33 Items.

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Results 1 - 25 of 28

TCI GM Universal Transmission Dust Covers 743866

TCI GM Universal Transmission Dust Covers 743866

Transmission Dust Cover, Plastic, Black, GM TH200, TH200C, TH250, TH250C, TH350, TH350C, TH400, No Starter Cut-Out, Each

Part Number: TCI-743866

3.56 out of 5 stars ( 36 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

TCI GM Universal Transmission Dust Covers 743867

Transmission Dust Cover, Steel, Chrome, GM TH350, TH350C, TH400, With Starter Cut-Out, Each

Part Number: TCI-743867

Not Yet Reviewed

Estimated Ship Date: Today

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Estimated Ship Date: Today

TCI GM Speedometer Gears 880016

Speedometer Gear, Drive, 18-Tooth, Cascade Blue, GM, TH250C, TH350C, TH375B, Each

Part Number: TCI-880016

4.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

TCI Super StreetFighter 3,500-3,800 Stall Torque Converter 242422

Torque Converter, Super StreetFighter, 10 in., Chevy, TH250C/TH350C, Each

Part Number: TCI-242422

Not Yet Reviewed

Estimated Ship Date: Jun 1, 2026 if ordered today

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Estimated Ship Date: Jun 1, 2026 if ordered today

TCI Saturday Night Special 1,600-2,000 Stall Torque Converter 242400

Torque Converter, Saturday Night Special, Chevy, TH250C/TH350C, Each

Part Number: TCI-242400

Not Yet Reviewed

Estimated Ship Date: Jun 1, 2026 if ordered today

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Estimated Ship Date: Jun 1, 2026 if ordered today

TCI Valve Body Performance Improver Transmission Upgrade Kits 326300

Transmission Upgrade Kit, Trans-Scat, Chevy, Buick, Oldsmobile, Pontiac, GMC, TH250C, TH350C, Each

Part Number: TCI-326300

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Jun 1, 2026 if ordered today

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Estimated Ship Date: Jun 1, 2026 if ordered today

TCI GM Speedometer Gears 880011

Speedometer Gear, Driven, 38-Tooth, Blue, GM, 200C, 350C, 375B, TH425, TH400, TH475, 700R4, Each

Part Number: TCI-880011

4.82 out of 5 stars ( 11 )

Estimated Ship Date: Today

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TCI GM Speedometer Gears 880032

Speedometer Gear, Driven, 45-Tooth, Light Blue, GM Turbo-Hydromatics, Each

Part Number: TCI-880032

4.37 out of 5 stars ( 19 )

Estimated Ship Date: Today

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TCI GM Speedometer Gears 880031

Speedometer Gear, Driven, 43-Tooth, Dark Blue, Style H, GM, 125, 200-4R, TH200, 350, 375, 400, 425, 700R4, Each

Part Number: TCI-880031

4.73 out of 5 stars ( 11 )

Estimated Ship Date: Today

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TCI GM Speedometer Gears 880028

Speedometer Gear, Driven, 40-Tooth, Black, GM Turbo-Hydromatics, Each

Part Number: TCI-880028

4.55 out of 5 stars ( 20 )

Estimated Ship Date: Today

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TCI GM Speedometer Gears 880007

Speedometer Gear, Driven, 34-Tooth, LIght Green, GM, Powerglide, Each

Part Number: TCI-880007

5.0 out of 5 stars ( 12 )

Estimated Ship Date: Today

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TCI GM Speedometer Gears 880013

Speedometer Gear, Driven, 44-Tooth, Gray, GM Turbo-Hydromatics, Each

Part Number: TCI-880013

4.5 out of 5 stars ( 14 )

Estimated Ship Date: Today

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TCI GM Speedometer Gears 880012

Speedometer Gear, Driven, 39-Tooth, Brown, GM, 200C, 350C, 375B, TH425, TH400, TH475, 700R4, Each

Part Number: TCI-880012

5.0 out of 5 stars ( 9 )

Estimated Ship Date: Today

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TCI GM Speedometer Gears 880030

Speedometer Gear, Driven, 42-Tooth, Green, GM Turbo-Hydromatics, Each

Part Number: TCI-880030

4.59 out of 5 stars ( 17 )

Estimated Ship Date: Today

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TCI GM Speedometer Gears 880029

Speedometer Gear, Driven, 41-Tooth, Mustard, GM Turbo-Hydromatics, Each

Part Number: TCI-880029

4.5 out of 5 stars ( 10 )

Estimated Ship Date: Today

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TCI GM Speedometer Gears 880008

Speedometer Gear, Driven, 35-Tooth, Light Brown, GM Turbo-Hydromatics, Each

Part Number: TCI-880008

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Today

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TCI GM Speedometer Gears 880014

Speedometer Gear, Drive, 8-Tooth, Caramel, GM. 250/350/375, Each

Part Number: TCI-880014

4.62 out of 5 stars ( 13 )

Estimated Ship Date: Today

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TCI GM Speedometer Gears 880015

Speedometer Gear, Drive, 10-Tooth, Royal Blue, GM Turbo-Hydromatics, Each

Part Number: TCI-880015

4.67 out of 5 stars ( 6 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

TCI GM Speedometer Gears 880002

Speedometer Gear, Driven, 20-Tooth, Aqua Blue, GM Turbo-Hydromatics/PowerGlide, Each

Part Number: TCI-880002

5.0 out of 5 stars ( 10 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

TCI GM Speedometer Gears 880010

Speedometer Gear, Driven, 37-Tooth, Burgundy, GM Turbo-Hydromatics, Each

Part Number: TCI-880010

4.83 out of 5 stars ( 6 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

TCI GM Speedometer Gears 880000

Speedometer Gear, Driven, 18-Tooth, Chocolate Brown, GM Turbo-Hydromatics/PowerGlide, Each

Part Number: TCI-880000

4.75 out of 5 stars ( 4 )

Estimated Ship Date: Today

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TCI GM Speedometer Gears 880004

Speedometer Gear, Driven, 22-Tooth, Dark Gray, GM Turbo-Hydromatics, PowerGlide, Each

Part Number: TCI-880004

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Today

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Estimated Ship Date: Today

TCI GM Speedometer Gears 880001

Speedometer Gear, Driven, 19-Tooth, Natural, GM Turbo-Hydromatics, PowerGlide, Each

Part Number: TCI-880001

4.78 out of 5 stars ( 9 )

Estimated Ship Date: Today

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TCI GM Speedometer Gears 880003

Speedometer Gear, Driven, 21-Tooth, Red, GM Turbo-Hydromatics/PowerGlide, Each

Part Number: TCI-880003

4.71 out of 5 stars ( 7 )

Estimated Ship Date: Today

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TCI Flexplate Safety Shields 940004

Automatic Transmission Shield, Flexplate, Steel, Blue Powdercoated, Chevy, 3-Speed, 4-Speed, Automatic, Kit

Part Number: TCI-940004

2.5 out of 5 stars ( 6 )

Estimated Ship Date: Today

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