MSD LS Ignition Control - Red Brake Light Switch Top Air Inlet allows you

Top Air Inlet allows you to run Natural Air

045 in Thick

Highly Efficient Design w/ Minimal Pressure Drop

This is superior to utilizing silicone to seal internal baffles

MSD LS Ignition Control - Red Brake Light Switch Top Air Inlet allows youAs the popularity of GM LS engines continue to grow, so does the demand for a powerful, reliable and easily adaptable ignition system. MSD has answered this demand with an updated and improved version of the popular 6LS box. Whether using a stock crate engine or building a custom powerhouse, the MSD LS Ignition provides the control you need to achieve the performance you want. Dial in the perfect tune for your LS using the easily adjustable preset