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B&M Transpak Kits

4.75 out of 5 stars 24 Customer Reviews

Recalibrate your automatic transmission for optimum performance and extended life! B&M Transpak kits create new shifting characteristics by re-routing fluids through your transmission's valve body. Each kit includes two options: RV/Heavy-Duty and Hi-Performance Street. RV/Heavy-Duty is for towing, off-roading, or other heavy-duty use. Hi-Performance Street gives you quicker, snappier shifts than RV/Heavy-Duty, with standard shift points and automatic features when in "drive."

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Transmission Upgrade Kit, Transpak, GM, TH350, TH375B, M38, Each

Part Number: BMM-30228

4.9 out of 5 stars ( 10 )

Estimated Ship Date: Tuesday 9/2/2025

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Estimated Ship Date: Tuesday 9/2/2025

This product may not be eligible for select promotional offers

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