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Kickdown Switch Kit For TH400 Transmission

For GM TH400 Transmissions.

PART# 20297

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$71.26   Suggested Retail
$57.72   Holleydays Price
Estimated shipping date: 12/01/2020
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When swapping the TH400 transmission into any vehicle, this kit makes installation of the transmission's kickdown feature a snap. This switch mounts to either a TH700R4, TH200, TH200-R4 or TH350 throttle cable bracket.


  • Prevents Part Throttle Kickdown
  • Over 65 Years of B&M Quality
  • Quick and Easy Installation
  • Allows High Speed Cruise
  • Cruise In Overdrive


Emission Code5
Instructions IncludedYes
Product TypeAutomatic Transmission Kickdown
California Proposition 65 RequiredNo
Part Number20297



This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

In The Box

In The Box

  • Switch
  • knob
  • spring
  • washers and hardware

Tech Resources

Fits GM Turbo-Hydramatic 400 automatic transmissions


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       X  Holleydays 2020 20% off and DD
       X  Holleydays 2020 20% off and DD