The Aluminum Ultra XP Circle Track Carburetor from Holley is a carburetor engineered and manufactured to Holley's specifications for consistent fit and function.

Holley 0-80813BKX Specifications:

• Aluminum Construction (saves 4.5 lbs - 38% weight savings).
• Integrated idle bypass valve eliminates the need for holes in throttle plates and allows for proper adjustment of idle while maintaining correct throttle plate to transfer slot relationship.
• Helps maintain good idle control when using radical camshafts.
• Dual 30cc accelerator pumps provide the perfect amount of fuel from idle to full throttle.
• Fuel bowls provide 20% more fuel capacity while controlling slosh with internal baffling.
• Clear sight windows on both sides of bowls for easy and safe fuel level adjustments.