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TH400 Adjustable Transmission Modulator

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Product Details

B&M accessories help you complete your project with parts designed and selected by the experts at B&M. This vacuum modulator comes pre-adjusted for 'normal' shift points, but it is fully adjustable, allowing you to customize the shift points (within a range of 2-4 mph). Please note: If you have a big camshaft and your engine does not make adequate vacuum, you will not be able to make the stock or B&M modulator work properly, usually resulting in late, hard shifts.


  • Vacuum modulator is fully adjustable to custom tailor your shift points (within 2-4 mph)
  • Comes pre-adjusted for normal shift points to get you started
  • Applications include TH350 and TH400 transmissions
  • Genuine B&M accessory
  • Backed by the manufacturer with a 1 year limited warranty
  • Fully Adjustable!


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