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Rectangular cabin air filter, white pleated media in black frame

Baldwin Filters

Baldwin Filters PA3945 Cabin Air Filter 8-7/16 x 2-11/16 in

SKU CH-SZQ0-K8RW1

Cabin air filter sized 17 1/8 by 8 7/16 by 2 11/16 inches for vehicle HVAC systems

  • Cabin air filter traps dust and allergens for cleaner interior air
  • Rectangular element fits specific HVAC housings measuring 8-7/16 by 2-11/16 inches
  • Overall length of 17 1/8 inches matches OE filter dimensions for proper seal
  • Baldwin Filters construction delivers reliable filtration performance for automotive use
  • Element-only design installs directly into existing filter housing without additional hardware

Baldwin Filters PA3945 cabin filter

The Baldwin Filters PA3945 is a rectangular automotive cabin air filter designed to clean incoming ventilation air for passenger compartments. It serves drivers and fleet operators who need a direct-fit replacement element for compatible vehicle models.

Rectangular element with precise dimensions

The filter measures 8-7/16 inches by 2-11/16 inches by 17-1/8 inches, matching the housing specifications for listed applications. Its rectangular panel design installs flat within the designated HVAC housing without additional framing or clips.

Element-only replacement for scheduled maintenance

The package supplies the filter media and frame as a single service unit, allowing technicians to swap the used element during routine service intervals. No extra hardware, sealant or software is included or required for installation.

Highlights

  • Cabin air filter traps dust and allergens for cleaner interior air
  • Rectangular element fits specific HVAC housings measuring 8-7/16 by 2-11/16 inches
  • Overall length of 17 1/8 inches matches OE filter dimensions for proper seal
  • Baldwin Filters construction delivers reliable filtration performance for automotive use
  • Element-only design installs directly into existing filter housing without additional hardware

Specifications

BrandBALDWIN FILTERS

Questions about this item

What are the exact dimensions of the PA3945 cabin air filter?

The filter measures 8-7/16 inches in width, 17-1/8 inches in length and 2-11/16 inches in height.

Does the PA3945 require a separate housing or frame for installation?

No, this is an element-only design that installs directly into the vehicle's existing filter housing.

How is the PA3945 installed, and what common mistake should be avoided?

Open the glove box or dashboard access panel, remove the old element, and insert the new filter with the airflow arrow pointing toward the blower motor.

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