Seal tanks with this replacement fuel cap, part number 591003, made for select Briggs & Stratton Lawn Mower or Small Engine.
Grid is 1 inch square
Briggs & Stratton Fuel Cap 591003
Briggs & Stratton Fuel Cap 591003
Manufacturer Part

Briggs & Stratton Fuel Cap 591003

Genuine OEM Part # 591003RC Item # 2218166
Manufacturer Part
Seal tanks with this replacement fuel cap, part number 591003, made for select Briggs & Stratton Lawn Mower or Small Engine.
Grid is 1 inch square
Briggs & Stratton Fuel Cap 591003
Briggs & Stratton Fuel Cap 591003
$17.68
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Seal tanks with this replacement fuel cap, part number 591003, made for select Briggs & Stratton Lawn Mower or Small Engine.
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$17.68
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This part 591003 is compatible with:

Product Type:
Small Engine
Brands:
Briggs & Stratton

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Fuel Cap Customer Reviews

Common Problems Fixed by the Fuel Cap

Based on customer reports and repair data, this part commonly fixes these issues:

About the Fuel Cap

As fuel is consumed by the engine, the level in the fuel tank lowers. To make up for this, the fuel cap uses a small vent to allow air to enter the tank. If the fuel cap vent is clogged, air won’t be able to enter the tank and a vacuum or “vapor lock” will occur. This stops the flow of fuel to the carburetor causing the engine to stall. To determine if the fuel cap vent is clogged, try slightly loosening the cap and then starting the engine. If loosening the fuel cap allows the engine to stay running it is likely clogged and will need to be replaced.

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