1999 GMC K1500 Brands

JET Performance Underdrive Pulley Kits are manufactured from 1-piece billet aluminum. They will give you an additional 10-13 hp by reducing the drag placed your vehicle's engine to drive accessories such as A/C, power steering, and water pumps. The kits will slow down the accessories and will allow the engine to turn with less effort, increasing horsepower, fuel economy, and improving your acceleration. The pulleys will not effect adversely the operation of the accessories! The installation process is quick and simple. Free shipping to all of USA!

Key Features:

• Jet Underdrive Pulleys
• Two Pulleys
• Does Not Come W/ Serpentine Belt

Key Features:

• E-Force Supercharger Pulley
• For Use w/Enforcer Systems
• 3.875 in. Black