NOS Nitrous Micro Switch - Holley 4500 Carburetors 93521 Includes Black horn button

Includes Black horn button

300SD 1985-1978

Memory stores 10 complete sets of temps (120 total) with quick and easy recall

1980-1985 GMC G3500

Dyno test results show it makes maximum torque and horsepower at low-end (1800 to 3000 RPM)

NOS Nitrous Micro Switch - Holley 4500 Carburetors 93521 Includes Black horn buttonNOS Micro Switch Bracket 16514NOS Billet Dominator 4500 Micro Switch Bracket Product Description: Nitrous Micro Switch Bracket Included Holley 4500 Carburetors Kit The use of nitrous oxide as a performance enhancement has been used since World War II. Allied aircraft used it for emergency boosts in airspeed and altitude capabilities. By the end of World War II, jet propulsion had been invented and the United States' government was losing interest in