CHEVROLET B&M Transmissions

Automatic Transmission Controllers, Kickdown Switches, Buick, Chevy, GMC, Oldsmobile, Pontiac, TH400, Kit

Part Number: BMM-20297

4.3 out of 5 stars ( 43 )

Estimated Ship Date: Monday 9/22/2025

Shift Improver, Chevy, TH350, Each

Part Number: BMM-30262

4.72 out of 5 stars ( 25 )

Estimated Ship Date: Monday 9/22/2025

Transmission Upgrade Kit, Shift Improver, GM, TH400, TH375, M40, Each

Part Number: BMM-20260

4.8 out of 5 stars ( 15 )

Estimated Ship Date: Monday 9/22/2025

Transmission Upgrade Kit, Shift Improver, GM, 700R4, 4L60, Each

Part Number: BMM-70239

4.65 out of 5 stars ( 20 )

Estimated Ship Date: Monday 9/22/2025

Transmission Upgrade Kit, Shift Improver, GM, 4L60E, Each

Part Number: BMM-70360

4.82 out of 5 stars ( 11 )

Estimated Ship Date: Monday 9/22/2025

Automatic Transmission Kickdown Kit, Carburetor/Fuel Injection, Buick, Chevy, Oldsmobile, Pontiac, TH350, Kit

Part Number: BMM-30287

4.7 out of 5 stars ( 10 )

Estimated Ship Date: Monday 9/22/2025

Filter Extension For 70289, 700R4

Part Number: BMM-70288

4.67 out of 5 stars ( 3 )

Estimated Ship Date: Monday 9/22/2025

Transmission Upgrade Kit, Shift Improver, GM, TH400, 3L80, Each

Part Number: BMM-20261

5.0 out of 5 stars ( 4 )

Estimated Ship Date: Monday 9/22/2025

Transmission Upgrade Kit, Shift Improver, GM, 200-4R, Each

Part Number: BMM-35265

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 9/22/2025

Transmission Filter Extension, Replacement, For BMM-70260, GM, 4L60E, Each

Part Number: BMM-70354

3.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 9/22/2025

Shift Improver, ShiftPlus Electronic, GM 4L60E, 4L80E, Each

Part Number: BMM-70380

3.82 out of 5 stars ( 11 )

Estimated Ship Date: Oct 8, 2025 if ordered today

• Drop Ship
• Special Order

Transmission Filter Extension, Cast Aluminum, for BMM-30280/BMM-30289, Each

Part Number: BMM-30284

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Monday 9/22/2025