This Holley replacement idler pulley is built for supercharged LT5 accessory drive systems, featuring a smooth backside and durable composite construction for reliable serpentine belt routing.
Specifications:
- Product Type: Idler Pulley
- Belt Type: Serpentine
- Pulley Style: Smooth/Backside
- Finish: Black
- Material: Composite
- Diameter: 90 mm
- OEM Reference: GM12665035
- Warranty: Manufacturer's Limited 90-Day Warranty
- Part Number: 97-269
This idler pulley replaces the factory unit on GM supercharged LT5 accessory drive systems.
FAQ
What diameter is this pulley?
It measures 90 mm in diameter.
What is the pulley surface like?
It has a smooth backside design for serpentine belt routing.
What is it made of?
The pulley is made of composite material with a black finish.
What does this replace?
It replaces the factory idler pulley on GM supercharged LT5 accessory drive systems, OEM reference GM12665035.

