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Baldwin Filters PA5311 round air breather filter, light pleated paper element, metal end caps, 4-5/32 inch diameter

Baldwin Filters

Baldwin Filters PA5311 Automotive Air Breather Filter Round 4-5/32 in Diameter

SKU CH-MEYS-MSZK6

Round automotive air breather filter measuring 4-5/32 inches in diameter and 2-7/8 inches tall

  • Round breather filter fits tight engine bays
  • 4-5/32 in diameter matches OEM specs
  • 2-7/8 in height allows direct replacement
  • Baldwin Filters quality protects engine airflow
  • Element-only design simplifies installation

Baldwin Filters PA5311 Air Breather

The Baldwin Filters PA5311 is a round automotive air breather filter designed for engine crankcase ventilation. It fits applications requiring a 4-5/32 inch outside diameter and a 2-7/8 inch height. This component is intended for vehicle owners and mechanics maintaining emission control systems. It is not suited for intake air filtration or heavy-duty industrial compressor systems.

Capacity and service limits

The filter element handles standard crankcase blow-by gases within the specified 4-5/32 inch diameter housing. It provides adequate flow for typical passenger car and light truck engines under normal operating conditions. Service life ends when the element becomes saturated with oil mist or restricted by debris, requiring replacement. It does not accommodate high-volume racing crankcase evacuation systems.

Installation hardware and packaging

The unit ships as an element only with no mounting hardware, clamps, or gaskets included. Installers must reuse existing retaining components or source compatible hardware separately. No service indicators or maintenance schedules are bundled with the filter. The packaging contains the single filter element ready for direct installation.

Highlights

  • Round breather filter fits tight engine bays
  • 4-5/32 in diameter matches OEM specs
  • 2-7/8 in height allows direct replacement
  • Baldwin Filters quality protects engine airflow
  • Element-only design simplifies installation

Specifications

BrandBALDWIN FILTERS

Questions about this item

Will the 4-5/32 in diameter breather fit my existing carburettor neck?

The filter has a 4-5/32 in outside diameter and 2-7/8 in height; measure your carburettor neck to confirm the same diameter before installing.

How can I verify the PA5311 is sealing properly once installed?

After fitting, run the engine and check for unmetered air leaks around the seal; a steady idle and no whistling indicate correct seating.

Does the box include a mounting clamp or gasket for the PA5311?

The package contains the round element only; any required clamp, gasket or adapter must be sourced separately.

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