B&M 70248 Converter Lockup Controller

For GM Automatic Trans with Lockup Converter

PART# 70248

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$276.00   Suggested Retail
$247.95   Your Price
Estimated shipping date: 12/11/2020
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The B&M Lockup Controller provides control of lockup through vehicle speed on GM TH-700, 200, 200-4R, 350 and 4L60 with a lockup converter, Can be used for lockup operation when converting a non-lockup equipped vehicle to a lock-up style.


  • B&M Quality
  • Includes manual override switch
  • LED indicates locked or unlocked
  • Dash mounted control for speeds between 30 to 90 mph

Product Attributes

Emission Code5
Product TypeConverter Lockup Controllers
California Proposition 65 Chemical NameButyl Benzyl Phthalate (BBP)d
California Proposition 65 RequiredYes
Part Number70248



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 an electrical speedometer. GM TH-700, 200, 200-4R, 350 and 4L60
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    *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.