Transmissions & Transmission Parts

ATI Compu-Flow Reverse Manual Valve Bodies ATI403200

Automatic Transmission Valve Body, Full Manual, Cast Iron, Buick, Chevy, GMC, Pontiac, TH400, Reverse, Each

Part Number: ATI-403200

5.0 out of 5 stars ( 1 )

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Moroso Automatic Transmission Pan Bolt Kits 38781

Automatic Transmission Pan Bolts, Hex-flange, Steel, Zinc Plated, Ford, C6, Set of 17

Part Number: MOR-38781

3.0 out of 5 stars ( 2 )

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Sonnax Extreme-Duty Clutch Hub and Intermediate Shaft Assemblies 104690-45

Automatic Transmission Intermediate Shaft, 300M, Extreme Duty Hub, 4-5-6 CL, GM 6L90, 45T, Each

Part Number: SOX-104690-45

Not Yet Reviewed

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Moroso Automatic Transmission Pan Bolt Kits 38782

Automatic Transmission Pan Bolts, Hex-flange, Steel, Zinc Plated, GM, 200-4R, 200-R4, 4L60E, 700R4, Set of 17

Part Number: MOR-38782

Not Yet Reviewed

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Sonnax Reverse Clutch Pack Pressure Plates 28131

PRESSURE PLATE-REVERSE GEAR

Part Number: SOX-28131

Not Yet Reviewed

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Moroso Automatic Transmission Pan Bolt Kits 38780

Automatic Transmission Pan Fasteners, Hex Head Bolts, 5/16 in.-18 x 5/8 in. Long, Grade 5, Steel Construction, Clear Zinc Finish, Set of 14

Part Number: MOR-38780

5.0 out of 5 stars ( 2 )

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J.W. Performance Flexplate Adapter Kits 80013

Flexplate Adapter, Steel, Chrysler, Dodge, Plymouth, 8-Bolt Crankshaft, Kit

Part Number: JPT-80013

Not Yet Reviewed

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FTI Performance Transmission Intermediate Clutch Friction Plates F4049C

Automatic Transmission Clutch Friction Plates, Intermediate Clutches, 0.070 in. Thickness, GM, TH400, Each

Part Number: FTI-F4049C

1.0 out of 5 stars ( 1 )

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FTI Performance SST Series 4,200-4,600 Stall Torque Converter SST89-8

Torque Converters, SST Series, 9 in. Diameter, Aluminum Stator, Diode, Turbo Spline, 4,200-4,600 Stall, THM400, THM350, Each

Part Number: FTI-SST89-8

Not Yet Reviewed

Estimated Ship Date: Mar 27, 2026 if ordered today

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Estimated Ship Date: Mar 27, 2026 if ordered today

Sonnax Automatic Transmission Oil Pump Bushings 36002-01

Automatic Transmission Rebuild Components, Pump Bushing, Steel-Backed Bronze, Each

Part Number: SOX-36002-01

Not Yet Reviewed

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ATI Torsional Input Shafts ATI406007

Automatic Transmission Input Shafts, Torsional Input Shafts, Vacuum Melted 300 Steel, GM, THM400, Each

Part Number: ATI-406007

Not Yet Reviewed

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FTI Performance Automatic Transmission Steels F4047B

Automatic Transmission Clutch Steel, 0.076 in. Thickness, GM, THM400, Each

Part Number: FTI-F4047B

Not Yet Reviewed

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ATI Tailshaft Housings ATI701935

Transmission Tailhousing, Includes Roller Bearing, 4L80E, 4L85E, Each

Part Number: ATI-701935

Not Yet Reviewed

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Engine Works Locking Dipstick Tubes 37432

Transmission Fluid Dipstick, Locking Dipstick Tube, Bellhousing Mount, Transmission Case Entry, Black Steel Tube, Red Handle, THM400, Chevrolet, Each

Part Number: EW1-37432

Not Yet Reviewed

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Summit Racing™ Transmission Pumps SUM-700408

Front Pump, TH400 Pump, Oversize Gears, Additional Flow and Pressure, Each

Part Number: SUM-700408

3.0 out of 5 stars ( 2 )

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Sonnax Wear Plates 28755-06

WEAR PLATE HIGH GEAR 5/SET

Part Number: SOX-28755-06

Not Yet Reviewed

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Sonnax 10-Clutch Drums 28756-01

HI CLUTCH DRUM 10 FRICTION

Part Number: SOX-28756-01

5.0 out of 5 stars ( 1 )

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ATI Tailshaft Housings ATI401931

Transmission Tailhousing, Includes Bushing, OEM Replacement, TH400, Each

Part Number: ATI-401931

Not Yet Reviewed

Estimated Ship Date: Mar 16, 2026 if ordered today

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Estimated Ship Date: Mar 16, 2026 if ordered today

ATI Torsional Input Shafts ATI207148

Input Shaft, Torsional, Vasco 300, Ringless, ATI, Superglide, Super Spline, 12.875 in. Length, Each

Part Number: ATI-207148

5.0 out of 5 stars ( 2 )

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ATI Trans-Brake Solenoids ATI203480

Solenoid Assembly, Trans-Brake, Solenoid - Adapter - Fasteners, Each

Part Number: ATI-203480

5.0 out of 5 stars ( 2 )

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ATI GM Transmission Swap 130-Tooth Flexplate ATI915664

Flexplates, ATI GM Transmission Swap Flexplates, 130-Tooth, Internal Balance, Steel, SFI 29.1, Chrysler, Dodge, Jeep, Ram, Each

Part Number: ATI-915664

Not Yet Reviewed

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FTI Performance Automatic Transmission Steels F4049S

Automatic Transmission Clutch Steels, Intermediate, 0.080 in. Thick, GM, TH400, Each

Part Number: FTI-F4049S

5.0 out of 5 stars ( 1 )

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FTI Performance Automatic Transmission Steels F4049T

Automatic Transmission Clutch Steel, 0.090 in. Thickness, GM, TH400, Each

Part Number: FTI-F4049T

Not Yet Reviewed

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FTI Performance Tail Housing Bearings F2528

POWER GLIDE REPLACEMENT BEARING FOR TAILHOUSING

Part Number: FTI-F2528

Not Yet Reviewed

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ATI Torsional Input Shafts ATI646030

Input Shaft, Torsional, Vasco 300, Ford, C-4, 24-Spline, Each

Part Number: ATI-646030

Not Yet Reviewed

Estimated Ship Date: Mar 12, 2026 if ordered today

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Estimated Ship Date: Mar 12, 2026 if ordered today