This Vintage Mallory RPM Limiter #644 is a must-have for car enthusiasts looking to add an adjustable RPM rev engine safety dash control to their vehicle. With its quality brand and manufacturer part number, you can trust that this product will perform at its best. It is compatible with a wide range of car and truck parts and accessories, making it a versatile choice for any vehicle. Whether you're a seasoned mechanic or just starting out, this RPM Limiter is an essential addition to your collection. Get it today and experience the power and safety it offers. HAS A WIRE PULLED OFF DASH CONTROL. NEEDS SOLDERED BACK ON. THIS ONE IS THE OLDER SIGNATURE SERIES. UNTESTED COLLECTABLE. Thanks #1221M