has made available a smaller diameter supercharger pulley for all supercharged 3800-Series GM 3.8L V6 engines. This pulley can help your engine produce up to an additional 25 HP, but not at the cost of reliability or durability. SLP's pulley is constructed from OEM-quality steel, has a black OEM finish and appearance for an un-touched underhood look. The pulley utilizes the original factory drive belt. The kit includes the supercharger pulley and special puller tool to complete the installation. For Off-Road use only.