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Vehicle Info NeededHOLLEYPART NUMBER: 510-720-11
720-11 Flame Arrestor Aluminum, Natural
$13595
1 left in stock
Ships on Sep 08, 2026
Lowest Price GuaranteeFlame Arrestor
Holley Flame ArrestorAluminum, Natural 5.75 in. Diameter x 2.75 in. Overall Height, 5.125 in. Inlet
Holley 720-11 Features:
Marine Flame arrestors are required, by law, for every boat with a gasoline engine. Holley marine flame arrestors are designed to protect your vessel from the potentially disastrous effects of backfire, plus they look great. A properly sized flame arrestor is a must to get the maximum performance from your vessel. A flame arrestor that is undersized will restrict engine breathing as would a dirty air cleaner. Holley offers aluminum, chrome and stainless steel flame arrestors in various sizes. The charts below list these by finish and also their sizes and recommended CFM. The recommended CFM column is a selection guide so that the flame arrestor could be properly sized to the carburetor's CFM capacity and existing space restrictions.- Genuine Holley Quality Parts
Part TypeAir Cleaner Assembly
BrandHOLLEY
Package Height2.75 in (69.85 mm)
Package Width5.9
Package Length7.0
Weight0.6 PG
Part CategoryPerformance Parts
ShapeRound
Flame Arrestor StyleRound straight
QuantitySold individually
MaterialAluminum
Carb/Air Horn Dia5.125 in (130.175 mm)
Flame Arrestor End Cap FinishPolished
Flame Arrestor End Cap MaterialAluminum
Flange Inside Diameter5.125 in (130.175 mm)
Part FitmentUniversal
Diameter Outside5.75 in (146.05 mm)
Diameter5.75 in (146.05 mm)
Marine ApprovedYes
Flame Arrestor MaterialStainless steel
Vendor Part Number720-11
Package Qty1
Package TypeEA
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