Performance & Replacement Transmission & Drivetrain Parts

Building awesome horsepower is only part of the story. You need to deliver all that power to your car or truck’s wheels! We’ve got torque-hungry high performance automatic...

Building awesome horsepower is only part of the story. You need to deliver all that power to your car or truck’s wheels! We’ve got torque-hungry high performance automatic and manual transmissions for street and strip applications, torque converters and clutch sets, flexplates and flywheels, plus limited-slip differentials, spools, lockers, ring and pinion sets, driveshafts, U-joints, axles, bearings, C-clip eliminator kits, transfer cases, shift kits, and rebuild kits. We also have a wide selection of trans-brakes, shifters, cables, and accessories—everything you need to put the power to the ground, Summit style.

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Results 1 - 25 of 204

Summit Racing™ Adjustable Vacuum Modulators SUM-G110

Vacuum Modulator, GM TH350, TH400, Push-In, Adjustable, Each

Part Number: SUM-G110

4.67 out of 5 stars ( 33 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

Summit Racing™ Torque Converter Lockup kits SUM-705418

Torque Converter Lockup Kit, Vacuum Switch Activated, 700R4, Kit

Part Number: SUM-705418

4.25 out of 5 stars ( 4 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

B&M Vacuum Modulators 20234

Vacuum Modulator, TH350, TH400 Transmission, Each

Part Number: BMM-20234

4.9 out of 5 stars ( 29 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

Scott Drake Vacuum Modulators C4AZ-7A377-B

Transmission Vacuum Modulator, Ford, C-4, C-6, Each

Part Number: SDK-C4AZ-7A377-B

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

Dorman 4WD Vacuum Delete Wheel End Couplers 600-405

Hub Conversion Kit, 4WD Vacuum Delete, Automatic, Ford, Lincoln, Pair

Part Number: RNB-600-405

4.33 out of 5 stars ( 3 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

TCI Transmission Vacuum Modulators 280001

TCI Transmission Vacuum Modulators 280001

Vacuum Modulator, Adjustable, GM, Powerglide, Each

Part Number: TCI-280001

4.38 out of 5 stars ( 8 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

TransGo Vacuum Bypass Kits VBP-VAC

Vacuum Bypass, Automatic Transmission Modulator Bypass Components, Kit

Part Number: TRG-VBP-VAC

4.0 out of 5 stars ( 7 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

TCI Transmission Vacuum Modulators 360003

Vacuum Modulator, Adjustable, Ford, C-6, Each

Part Number: TCI-360003

3.75 out of 5 stars ( 4 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

TCI Adjustable Vacuum Modulators 260101

Vacuum Modulator, Adjustable, Ford, Push-In, Green Stripe, Each

Part Number: TCI-260101

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

TCI Transmission Vacuum Modulators 360001

Transmission Vacuum Modulator, Steel, Screw-in Style, White Strip, Ford, C-4, C-6, Each

Part Number: TCI-360001

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

TCI Adjustable Vacuum Modulators 350001TCI

Modulator, Adjustable, Automatic Transmission, TH400, Each

Part Number: TCI-350001TCI

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

TCI Adjustable Vacuum Modulators 360002

Automatic Transmission Modulators, Adjustable, Push-In, Purple Stripe, Steel, Ford, Mercury, Lincoln, C6, Each

Part Number: TCI-360002

4.8 out of 5 stars ( 5 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

Sonnax Vacuum Modulator Plugs 28738-01K

Modulator Plug, GM, Powerglide, Kit

Part Number: SOX-28738-01K

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

Sonnax Vacuum Modulator Plug Gaskets 3543L-5

SERVICE KIT POWERGLIDE 5/SET

Part Number: SOX-3543L-5

Not Yet Reviewed

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

Standard Motor 4WD Hub Actuator Vacuum Hoses TCA-62

EM- 4WD SELECTOR SWITCH

Part Number: SMP-TCA-62

Not Yet Reviewed

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

Painless Performance 700R4 Converter Lock-Up Kits 60109

Torque Converter Lockup Kit, Vacuum Switch, GM 700R4, Kit

Part Number: PRF-60109

4.67 out of 5 stars ( 21 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

Van Steel Wheel Hub Assemblies for 1969-1982 CORVETTE - FB-15C

Wheel Hub, Front, Chevy, Each

Part Number: VAC-FB-15C

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

Van Steel X-Tracker Wheel Hub Assemblies for 1997-2008 CORVETTE - FBRB-5049

Wheel Bearing and Hub Assembly, X-Tracker Wheel Hub Assembly, Steel, Natural, RWD, Chevrolet, Each

Part Number: VAC-FBRB-5049

Not Yet Reviewed

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

Van Steel Loaded Bearing Supports for 1963-1982 CORVETTE - BA-21IK

Loaded Bearing Support, Rear Left, Steel, Natural, Each

Part Number: VAC-BA-21IK

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

Van Steel Loaded Bearing Supports for 1963-1982 CORVETTE - BA-22IK

Loaded Bearing Support, Rear Right, Steel, Natural, Each

Part Number: VAC-BA-22IK

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

Van Steel Wheel Hub Assemblies for 1963-1968 CORVETTE - FB-15CE

Wheel Hubs, Front, Chevy, Each

Part Number: VAC-FB-15CE

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

Van Steel Wheel Bearing and Spindle Rebuild Kits for 1969-1982 CORVETTE - FS-64K

Front Wheel Bearing Rebuild Kit, 1969-82 Chevy Corvette

Part Number: VAC-FS-64K

Not Yet Reviewed

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

TCI 2004R/700R4 Lockup Wiring Kits 376600

Torque Converter Lockup Kit, Wiring Kit, Vacuum Switch, GM, 200-4R, 700R4, Kit

Part Number: TCI-376600

4.26 out of 5 stars ( 61 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

ATI Torsional Input Shafts ATI406000

Automatic Transmission Input Shaft, Torsional, Vacuum Melted 300 Steel, GM, TH400, Each

Part Number: ATI-406000

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

FTI Performance Powerglide Input Shafts F2516

Automatic Transmission Input Shafts, Vacuum Melted 300 Steel, High-flow Design, GM, Each

Part Number: FTI-F2516

Not Yet Reviewed

Estimated Ship Date: Monday 2/16/2026 if shipped by air

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Estimated Ship Date: Monday 2/16/2026 if shipped by air

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