GM TH350/TH400 Adjustable Vacuum Modulator 12-15 lbs.
GM TH350/TH400 Adjustable Vacuum Modulator 12-15 lbs.
Speedway Motors

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#91029122

GM TH350/TH400 Adjustable Vacuum Modulator 12-15 lbs.

  • Adjustable vacuum modulator for GM TH350 and TH400 automatic transmissions
  • External adjustment screw lets you dial in shift points without removing the unit
  • Corrects soft, delayed, or erratic shifts caused by a worn or failed factory modulator
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$21.99

/each

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This part is Backordered. We currently do not have an estimate when this item will ship.


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Product Summary

TH350, TH400

  • Adjustable vacuum modulator for GM TH350 and TH400 automatic transmissions
  • External adjustment screw lets you dial in shift points without removing the unit
  • Corrects soft, delayed, or erratic shifts caused by a worn or failed factory modulator
  • Direct OE-style fit for straightforward installation
  • Suitable for street performance, towing, and daily-driver applications
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Key Specs

MFG. Part #35820R MAFT
BrandSpeedway Motors
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Speedway Motors 35820R MAFT Details

This adjustable vacuum modulator for GM TH350 and TH400 automatic transmissions features an external adjustment screw that lets you fine-tune shift points without removing the unit from the vehicle. Ideal for performance builds, towing applications, and any situation where the factory calibration needs correction.

  • Fits GM TH350 and TH400 automatic transmissions
  • External adjustment for shift point tuning without removal
  • Direct-fit OE-style installation
  • Corrects soft, delayed, or erratic shifts
  • Suitable for street, performance, and towing use

Speedway Motors 35820R MAFT Specifications

KEY SPECS
MFG. Part #35820R MAFT
BrandSpeedway Motors
GENERAL
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