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MSD Coil Current Booster

Ford Modular - Coil-On-Plug - 2-Step Rev Limiter

Part # 8740 Be the first to write a review
Estimated shipping date: 10/28/2021
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The coil current booster provides added power to your Ford coil-on-plug engine to support additional horsepower and also provides a 2-step rev limiter to consistently launch your car off the line. The MSD 8740 Coil Current Booster is designed for Ford Modular Engines with Coil-on-Plug ignitions that can benefit from additional spark energy to support high horsepower engines. The CCB increases the peak current at the ignition coil and spark energy at the plug gap. This makes it ideal to support engines with increased cylinder pressure from bumped-up compression ratios, a shot of nitrous, or boosted applications. The CCB has a built-in Two-Step rev limiter for consistent launches and quick 60-foot times at the track. The Two-Step RPM adjustments are made via two rotary switches adjustable from 1,000 - 10,900 rpm, in 100 and 1000 rpm increments. Plug in to the factory wiring and hook up activation wires as needed and you're set.


  • Increased current at the ignition coil
  • Increased spark energy at the spark plug
  • Built-in Two-Step rev limiter for consistent launches and quick 60 foot times
  • Quick, Easy solution to increase ignition power on Ford Modular Engines
  • Factory style wiring connectors plug directly into stock coils and harness

About MSD

From small block street cruisers to 10000 horsepower top fuel dragsters, MSD's ignition systems has been the industry leader for over 40 years. MSD continues to push the envelope with cutting-edge ignition technology as well as intake manifolds and EFI systems.

Brand MSD
Emission Code4
Features2-Step Rev Limiter
Product TypeCoil Current Booster for Ford C-O-P
Spark duration20% Over Stock
Spark Energy20% Over Stock
Voltage Required6 to 18 Volts
WarrantyLimited 1 Year Warranty
Part Number8740

This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

Limited 1 Year Warranty: See Details

    *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.