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Automatic Transmission Cases

The gearset of your automatic transmission is surrounded by a protective case made of iron or aluminum. Corrosion or damage may require a replacement for your stock...

The gearset of your automatic transmission is surrounded by a protective case made of iron or aluminum. Corrosion or damage may require a replacement for your stock case, and if you’re making upgrades for competition, you may need a beefed-up case for safety.

Top Brands

Stabilizing your high-performance engine is an important job, so you should go with a name brand you trust, instead of some third-party reseller. Summit Racing Equipment sells rocker arm stud girdles from manufacturers like COMP Cams, Harland Sharp, Trick Flow Specialties, Lunati, Howards Cams, and more.

The gearset of your automatic transmission is surrounded by a protective case made of iron or aluminum. Corrosion or damage may require a replacement for your stock case, and if you’re making upgrades for competition, you may need a beefed-up case for safety.

Top Brands

Stabilizing your high-performance engine is an important job, so you should go with a name brand you trust, instead of some third-party reseller. Summit Racing Equipment sells rocker arm stud girdles from manufacturers like COMP Cams, Harland Sharp, Trick Flow Specialties, Lunati, Howards Cams, and more.

Individual Parts

Results 1 - 21 of 21

Automatic Transmission Case, Powerglide, Aluminum, Natural, SFI 4.1, GM, Each

Part Number: TOS-2505

4.5 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Automatic Transmission Case, Super Hydra 400, A Option, 0.435 in. Thick PP, Call for Thinner Options, SFI 4.1, Aluminum, Natural, GM TH400, Each

Part Number: REI-SH400DRAG

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Estimated Ship Date: Tomorrow

OFFROAD TRANSMISSION CASE

Part Number: REI-SH400OFF

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Tomorrow

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Automatic Transmission Case, Aluminum, Natural, GM, Powerglide, Each

Part Number: REI-PG1500R

5.0 out of 5 stars ( 5 )

Estimated Ship Date: Tomorrow

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Automatic Transmission Case, Aluminum, Natural, GM, Powerglide, Each

Part Number: REI-PG1500

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Automatic Transmission Case, Aluminum, Natural, TH400, GM, Each

Part Number: ATI-400011

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Tomorrow

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Transmission Case, Ultra-Case Powerglide, Aluminum, Natural, SFI 4.1 Rating, Each

Part Number: JPT-92310

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Powerglide Case, Superglide, 2-Piece, Permanent Mold Aluminum Casting, SFI 4.1 Certfied, Each

Part Number: REI-PG2000

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Tomorrow

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Automatic Transmission Case, TH400, Aluminum, Natural, SFI 4.1, GM, Each

Part Number: TOS-4072

Not Yet Reviewed

Estimated Ship Date: Jan 12, 2026 if ordered today

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Estimated Ship Date: Jan 12, 2026 if ordered today

Auto Trans Case

Part Number: ADO-24238308

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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CASE ASM-A/TRNS

Part Number: ADO-24273111

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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Automatic Transmission Cases, ACDelco Automatic Transmission Cases, Aluminum, Natural Finish, Chevy, Each

Part Number: ADO-24275994

Not Yet Reviewed

Estimated Ship Date: Tomorrow

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350, SUPER CASE, NO BELL, NO GOV OR BAND

Part Number: ATI-ATI350013NG

Not Yet Reviewed

Estimated Ship Date: Dec 18, 2025 if ordered today

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Estimated Ship Date: Dec 18, 2025 if ordered today

SUPER CASE, BELL ONLY, PART OF NISSAN VR38 ADAPTER KIT SFI

Part Number: ATI-ATI915138

Not Yet Reviewed

Estimated Ship Date: Tomorrow if ordered today

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Estimated Ship Date: Tomorrow if ordered today

TRU-STREET 4L75E LATE CASE UP TO 600 FT LBS OF TORQUE WITH 24-2600 STALL CONVERTER FOR LS ENGINES

Part Number: BTM-1047500

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

TRU-STREET 4L75E RR LATE CASE UP TO 600 FT LBS OF TORQUE WITH BILLET TRIPLE LOCK CONVERTER ENGINE BRAKING, 2.84 FIRST GEAR

Part Number: BTM-1047500RR

Not Yet Reviewed

Estimated Ship Date: Jan 5, 2026 if ordered today

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Estimated Ship Date: Jan 5, 2026 if ordered today

CASE, TH-400 REID SFI

Part Number: TCI-210002

Not Yet Reviewed

Estimated Ship Date: Jan 14, 2026 if ordered today

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Estimated Ship Date: Jan 14, 2026 if ordered today

CASE, TH-400 REID OFFROAD SFI

Part Number: TCI-210003

Not Yet Reviewed

Estimated Ship Date: Jan 14, 2026 if ordered today

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Estimated Ship Date: Jan 14, 2026 if ordered today

P/G DEDEN CASE W/LINER&BEARING

Part Number: TCI-720007

Not Yet Reviewed

Estimated Ship Date: Jan 14, 2026 if ordered today

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Estimated Ship Date: Jan 14, 2026 if ordered today

REID TWO PIECE TRANS CASE

Part Number: TCI-720012

Not Yet Reviewed

Estimated Ship Date: Jan 14, 2026 if ordered today

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Estimated Ship Date: Jan 14, 2026 if ordered today

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This is a custom order part. You can order this part by Contacting Us.