When running a
custom air cleaner
on a Harley-Davidson, the carburetor support bracket makes sure that the carb is securely mounted so the manifold can’t rotate, making the carb sag downward. When running a custom air cleaner (such as a Lowbrow
Louvered Air Cleaner
or a Gasbox
Dog Dish Air Cleaner
) on a Harley-Davidson Evolution Big Twin or Sportsters engines or a Twin Cam engine,
breather bolts
are often needed to complete the installation. See Additional Information below for complete fitment.
- Can be used in conjunction with most breather kits (where applicable)
- All gaskets and mounting hardware included
- Breather kits/bolts sold separately













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