Performance & Replacement Transmission & Drivetrain Parts

Transmission Bellhousing, New, Aluminum, SFI 30.1, GM, TH350/TH400, Modified OEM Case, Each

Part Number: ATI-200044A

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Sprag, Roller Type, Steel, for GM TH400 Automatic Transmission (1966 and Later), Each

Part Number: ATI-405350

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

Flexplate, 153-Tooth, Steel, Internal Balance, 2 Piece Rear Main Seal, Chevy, Non-SFI, Each

Part Number: PIO-FRA112

5.0 out of 5 stars ( 19 )

Estimated Ship Date: Tomorrow

Detent Cable, Adjustable, 28-48 in. Length, Buick, Cadillac, Chevy, GMC, Oldsmobile, Pontiac, Each

Part Number: ATP-Y752

3.9 out of 5 stars ( 20 )

Estimated Ship Date: Tomorrow

Automatic Shifter, Outlaw, Forward Shift Pattern, without Cover, Pistol Grip, GM/Ford/Mopar, Each

Part Number: TCI-616531

4.95 out of 5 stars ( 19 )

Estimated Ship Date: Tomorrow

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Gate Plate, Pro Stick, 3-Speed Forward Pattern, GM, Automatic, TH350, TH400, Each

Part Number: BMM-80711

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

Transmission Dipstick, Braided Stainless, Polished Billet Aluminum, GM TH350, Push-In Style, Each

Part Number: TRD-8138

4.0 out of 5 stars ( 7 )

Estimated Ship Date: Tomorrow

Transmission Upgrade Kit, Trans-Scat, Buick, Chevy, GMC, Oldsmobile, Pontiac, 700R4, Each

Part Number: TCI-376000

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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Torque Converter Bolts, 7/16-20 in. x 1.00 in., Hex Head, Steel, Buick, Chevy, Oldsmobile, Pontiac, TH400, Kit

Part Number: TCI-745500

4.33 out of 5 stars ( 9 )

Estimated Ship Date: Tomorrow

Transmission Fluid Dipsticks, Twist Loc, Bellhousing/Firewall Mount, Stainless Steel Tube, Aluminum Handle, 19.00 in. Length, Chevrolet, Ford, Each

Part Number: AUL-9928

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Speedometer Port Plug, Billet Aluminum, Natural, 700R4, Each

Part Number: ICB-551961

4.83 out of 5 stars ( 6 )

Estimated Ship Date: Tomorrow

BEARING KIT

Part Number: SOX-SBKG12

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

• $10.00 Summit Bucks

Transmission Filter, Replacement, Each

Part Number: WIX-58897

4.81 out of 5 stars ( 26 )

Estimated Ship Date: Tomorrow

Transmission Yoke, Cast Steel, 1350, 32-spline, GM TH400, Doug Nash, Borg Warner Super T-10, Each

Part Number: STR-U1650

5.0 out of 5 stars ( 7 )

Estimated Ship Date: Tomorrow

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Modulator Delete Plug, GM, TH400, TH350, Billet Aluminum, Each

Part Number: ICB-551907

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

Shifter Conversion Kits, Automatic Transmission, Converts Stock Powerglide Floor Shifter To Work with TH350 or TH400, Chevrolet, Kit

Part Number: SIW-SC2031-C

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

• Free Shipping

Transfer Case Adapter, Atlas, Aluminum, Natural, 1.250 in. Length, Kit

Part Number: ADD-AS-6401

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

• Free Shipping

Speedometer Delete Plug, Billet Aluminum, Natural, TH400, Each

Part Number: ICB-551908

3.71 out of 5 stars ( 7 )

Estimated Ship Date: Tomorrow

Transmission Bracket, Steel, Zinc, Sidewinder Shifter, Chevy TH350, Kit

Part Number: WPP-1595

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

Automatic Transmission Kickdown Kit, Carburetor/Fuel Injection, Buick, Chevy, Oldsmobile, Pontiac, 700R4, Kit

Part Number: BMM-70242

3.8 out of 5 stars ( 10 )

Estimated Ship Date: Tomorrow

Transmission Dipstick, Natural Braided Stainless Steel Tube, Polished Handle, Bellhousing Mount, TH400, Each

Part Number: SUM-703103

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Transmission Dipstick, Black Braided Stainless Steel Tube, Black Handle, Bellhousing Mount, TH400, Each

Part Number: SUM-703103B

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Flexplate, 168-Tooth, Internal Engine Balance, 1-Piece Rear Main Seal, SFI 29.2, Chevy, Each

Part Number: TCI-399853

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Dec 18, 2025 if ordered today

• Drop Ship
• Free Shipping
• Special Order

Front Pump, TH400 Pump, Bolt-in, Forged Steel, GM, Each

Part Number: TOS-4063

Not Yet Reviewed

Estimated Ship Date: Tomorrow

• Free Shipping

Transmission Modulator Valve, GM, TH300, TH350, TH400, Each

Part Number: ATP-JX66

5.0 out of 5 stars ( 13 )

Estimated Ship Date: Tomorrow