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Your cart is empty.Transmission Vacuum ModulatorOEM Replacement1963-1990 Chevy TH-350 and TH-400Adjustable JEGS 62068 Vacuum Modulator for TH350 & TH400 automatic transmissions is a simple install that will provide you with smoother shifting, an improvement in gas mileage, and an overall renewal of transmission performance.Features:Optimize Shift PointsImprove Gas MileageRenew Transmission Performance
Customer
Reviewed in the United States on December 30, 2023
I was driving one day and my th400 wasn’t kicking into gear. Made it home looked around online because I thought my trans went out. But after looking up symptoms this part made more sense because it didn’t feel like slipping. It would high rev and not kick into gear. This fixed the issue and had my transmission shifting great. Would recommend
Alan Fettig
Reviewed in the United States on December 23, 2022
It fit perfect thanks
Customer
Reviewed in the United States on January 13, 2022
Fixed the late shifting problem on my RV
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