Speedmaster PCE152.1002 Billet Aluminum Supercharger Idler Pulley 4 Inch 3 Inch Belt

The Speedmaster PCE152.1002 is a precision-machined 4-inch idler pulley designed specifically for supercharger belt drive systems. Built to handle the high loads and speeds of forced induction applications, this pulley ensures consistent belt tension and reliable power transfer in custom blower setups.

Key Features:

• CNC-machined from 6061-T6 billet aluminum for superior strength and durability
• Heat-treated construction provides long-lasting performance under extreme conditions
• Dual sealed single-row ball bearings ensure smooth, quiet operation at high RPM
• Polished finish resists corrosion and adds a clean appearance to the engine bay
• Reversible design allows 1-inch spacing adjustment for precise belt alignment
• Accommodates 3-inch wide serpentine belts commonly used in supercharger applications
• Universal fitment works with various supercharger configurations and custom brackets

The adjustable spacing feature makes this idler pulley particularly valuable when working with different blower snout lengths or when fine-tuning belt alignment in custom forced induction systems. The robust bearing assembly handles the constant tension and high speeds required in supercharger drive systems, while the lightweight aluminum construction minimizes parasitic weight.