ACDelco 12665035 Supercharger Belt Idler Pulley

The ACDelco 12665035 is a genuine GM OE supercharger belt idler pulley designed specifically for Gen V LT5 engines found in 2019-2021 Corvette ZR1 models. This critical component is part of the supercharger drive belt system that routes power to the massive 2.65-liter Eaton TVS supercharger, which delivers up to 14 psi of boost and helps the LT5 produce 755 horsepower.

Key Features:

• GM Original Equipment part ensures exact fit, form, and function
• Engineered to withstand the high loads of the LT5's supercharger drive system
• Contains precision sealed ball bearings for smooth operation
• Manufactured to strict GM OE specifications for reliability and durability
• Direct replacement for worn or noisy idler pulley assemblies
• Black finish matches OE appearance

As a genuine ACDelco GM part, this idler pulley is the same component installed during vehicle production. The LT5 supercharger system operates at demanding conditions with the blower spinning at 2.4 times crankshaft speed, making quality OE components essential for reliable performance. Replace worn idler pulleys to eliminate bearing noise and maintain proper belt tension in your Corvette ZR1's supercharger system.