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Description
593240 Filter-A/C Cartridge — Briggs & Stratton OEM Air Filter
The Briggs & Stratton 593240 Filter-A/C Cartridge is a genuine OEM air cleaner cartridge designed to provide essential engine protection by filtering dust, dirt, and debris from incoming air before it enters the carburetor and combustion chamber. A clean air filter helps maintain proper airflow for efficient combustion, prevents engine wear, and supports reliable performance for lawn mowers and other outdoor power equipment.
Product Details
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Item Number: 593240
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Brand: Briggs & Stratton
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Part Type: Air Cleaner Cartridge / Filter-A/C Cartridge
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Condition: New Genuine OEM Replacement Part
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Primary Function: Filters air entering the engine for cleaner combustion
Function
This air filter cartridge is engineered to:
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Trap dirt, dust, and debris before air enters the engine
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Maintain optimal airflow for efficient combustion
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Help protect internal engine components from abrasive particles
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Improve starting reliability, idle smoothness, and power delivery
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Extend engine life through cleaner operation
Verify Fitment in 30 Seconds
Before ordering, confirm the following:
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Check your engine’s model number and parts diagram
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Verify that the OEM 593240 filter is listed for your engine
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Ensure your air cleaner housing matches the cartridge style
⚠️ Air filter fitment varies by engine series — model confirmation is critical.
Compatibility
This air filter cartridge fits a wide range of Briggs & Stratton small engines, including many 40N, 40U, 40R, 44N, 44R, 44S series engines commonly used in lawn mowers and outdoor power equipment.
Typical compatible engines include:
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40N877-0039-G1 / 40N877-0056-G1
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40U777-0001-B1, 40U777-0003-B1, 40U777-0004-B1, etc.
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40U877-0001-B1 to 40U877-0006-B1 (various)
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44N677-0035-G1 / 44N677-0036-G1
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44R677 & 44S series variants
(Model list representative; verify with your engine’s parts diagram.)
Installation / Usage
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Turn off the engine and disconnect the spark plug wire for safety
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Open the air cleaner cover on your engine
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Remove the old air filter cartridge
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Install the new 593240 filter, ensuring proper seating
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Reinstall the air cleaner cover
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Start the engine and verify smooth airflow and operation
Replacing a dirty or clogged air filter is one of the simplest maintenance tasks and improves engine efficiency.
Maintenance Tips
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Replace the air filter at least once per season or more often in dusty conditions
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Inspect after heavy mowing in dry, dusty environments
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Keep the air cleaner housing free of debris
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Always use OEM filters when possible to ensure accurate fit and performance
Notes / Equivalent References
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Genuine Briggs & Stratton 593240 is the recommended replacement for specified small engines.
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This part ensures proper OEM fit and service life compared to generic filters.

