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B&M Converter Lockup Controller

GM TH700R4, TH200, 200-4R, TH350 and 4L60 Transmissions.

PART# 70244

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$270.00   Suggested Retail
$242.95   Your Price
Estimated shipping date: 04/19/2021
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The B&M converter lockup controller provides dash-mounted control to govern converter lockup at any speed between 30 and 90 mph. These kits eliminate converter lock and unlock cycling and premature unwanted converter lockup.


  • Dash mounted Control for Speeds Between 30-90 mph
  • LED Light Indicates Locked or Unlocked
  • For Use with Mechanical Speedometers
  • Includes Manual Override Switch
  • Includes Hardware


Additional ContentsSpeed controller, electrical connectors, pulse generator, speedometer cable, instructions
Emission Code5
Indicator LightYes
Instructions IncludedYes
Manual OverrideYes
Product TypeAutomatic Transmission Lock-Up Torque Converter Control
California Proposition 65 Chemical NameButyl Benzyl Phthalate (BBP)d
California Proposition 65 RequiredYes
Part Number70244



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.

Tech Resources

Works with GM automatic transmissions using a lockup style torque converter and a mechanical speedometer. GM TH-700, 200, 200-4R, 350 and 4L60

    *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

    Some parts are not legal for use in California or other states with similar regulations.

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