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 The Ultra HP is fitted with Dominator-type fuel bowls, which accept an -8AN fuel fitting on either side. Holley provides -8AN caps and quality -6AN male fittings that are sealed using fuel-resistant O-rings. The fuel bowl also has an integral drain plug at the bottom for quick and easy disassembly. Although the Ultra HP features fuel-resistant coatings, it is good practice to drain the fuel bowls anytime the vehicle will sit for extended periods, particularly when ethanol-blended fuel is used.