Caterpillar 256-7903 2567903 Engine Air Filter

$ 51.80
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  • Availability: In Stock
  • Product Sku: 256-7903-1Pack
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Standard Efficiency Engine Air Filter - Secondary

It pays to choose genuine Cat® Filters to protect the iron that generates your income.

Cat Secondary Engine Air Filters are your last line of defense against dust, dirt and other contaminants that may damage the components of your income-producing machinery. Tasked with protecting the engine while the primary filter is being changed or in the event of a breach in the main filter, this secondary unit plays a critical role in preventing damage due to contaminants.

Constructed of durable materials and manufactured to meet Caterpillar’s stringent specifications, these air filters deliver the consistent quality and reliability that Cat owners count on. Because uptime and cost-effective maintenance are critical, Cat Air Filters have been specifically designed to protect and optimize the power of your Cat iron.

Working together, genuine Cat Primary and Secondary Filter Elements provide a cost-effective method for maintaining your engine’s integrity and increasing your equipment’s uptime on the jobsite.

  • Environmentally friendly
  • Increased airflow with less restriction
  • Serves the critical role of back-up filtration


Efficiency Rating: Standard Efficiency
Primary vs Secondary: Secondary
Seal Type: Radial Seal


Motor Grader
120M 12M

Wheel-Type Loader
924H 924HZ 928H 924K 928HZ 930H 930K 938H 938K

Wheeled Excavator
M315D M316D M318D M318D MH M320D2 M322D M322D MH M322D2 M322D2 MH M324D2 MH

Paving Compactor
CP-56 CP-56B CP-64 CP-68B CP-74 CP-74B CP-76 CP56B CP68B CP74B CP76B CS-56 CS-56B CS-64 CS-66B CS-68B CS-74B CS-74 CS-76 CS-76B CS-78B CS-79B CS56B CS68B CS74B CS78B CS79B

Asphalt Paver
AP-500E AP-555E AP-600D AP-655D BG500E BG555E BG600D BG655D

Integrated Toolcarrier


* All fitment filter part numbers are based on your engine serial number.
* Please confirm with our team if you are unsure this filter will fit your engine.