Trans-Dapt 9478 Water Pump Pulley, Single Groove V-Belt, 6.563-Inch Diameter, Aluminum

The Trans-Dapt 9478 Single Upper SWP Water Pump Pulley is designed for short water pump applications on small block Chevrolet engines. This single-groove V-belt pulley provides reliable belt engagement and is suited for performance, restoration, and replacement projects requiring a compatible short water pump pulley configuration.
Constructed from aluminum, the pulley is machined for consistent fit and dependable operation. Its lightweight design helps reduce rotating mass while maintaining the strength needed for everyday driving and high-performance engine applications. The 6.563-inch diameter supports proper accessory drive operation when matched with the correct water pump, belt, and pulley arrangement.
The Trans-Dapt 9478 water pump pulley is supplied individually and is intended for straightforward installation with compatible small block Chevy accessory systems. Verify water pump style, belt alignment, mounting pattern, and surrounding accessory clearance before installation to ensure proper fit and performance. This pulley is a practical choice for replacing a worn component or completing a custom engine build.

Features:

• Brand: Trans-Dapt

• Part Number: 9478

• Pulley Type: Water pump pulley

• Belt Type: V-belt

• Groove Count: Single groove

• Diameter: 6.563 inches

• Material: Aluminum

• Manufacturing Method: Machined

• Application: Short water pump systems

• Engine Compatibility: Small block Chevrolet engines

• Quantity: Sold individually