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![TH400 [64-UP] Automatic Transmission Modulator Vacuum Large](http://remco-transmission-parts.com/cdn/shop/files/BTM-007807_05d61b15-8b6f-41e5-be4c-e5507f4af18f.jpg?v=1761753067&width=1)
![TH400 [64-UP] Automatic Transmission Modulator Vacuum Large](http://remco-transmission-parts.com/cdn/shop/files/BTM-007807_05d61b15-8b6f-41e5-be4c-e5507f4af18f.jpg?v=1761753067&width=600)
TH400 [64-UP] Automatic Transmission Modulator Vacuum Large
$24.99
A worn or failing modulator on a TH400 or 3L80 unit throws off shift points and can make an otherwise sound automatic transmission behave unpredictably under load. This listing covers...