Caterpillar 4L-9851 4L9851 Engine Air Filter

$ 57.05
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  • Availability: In Stock
  • Product Sku: 4L-9851-1Pack
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Standard Efficiency Engine Air Filter - Primary

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

Contamination is your engine’s number one enemy, which is why it’s critical to protect your Cat equipment with genuine Cat Filter Elements. Cat Standard Efficiency Primary Engine Air Filters are your best value for normal duty applications, delivering increased engine protection and preventing equipment downtime.

Offering a long service life and exceptional filtration, Cat Air Filters are also environmentally friendly and cost effective. Designed to the exact specifications of your Cat equipment, genuine Cat Filters are a crucial factor in your machine’s ability to use air efficiently. A clean filter element protects internal mechanisms from being damaged by dirt.

Consistently choosing Cat Air Filters is the best choice to ensure long life and optimum performance of your Cat machinery.

  • Quick serviceability
  • Improved contamination control holds particulates during filter change

Specifications for Cat 4L9851 Air Filter:

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


Engine - Generator Set
3304 3304B

Engine - Industrial
3304 3304B 3306 3306B D320A D330C D333C G3304 G3306 G333C

Marine Products
3304 3304B D330A D330B D330C


AC-DELCO A284C, A284CF, AIR REFINER 10228, ARM-1008-2S, BALDWIN PA1620-S, BIG A 93851, CANADIAN MFRS. LTD. CFM107, CARQUEST 87851, CASE A15903, CATERPILLAR 3I-0853, 4L-9851, 4L-9892, CO-OP PMA-4L9581, COOPERS AZA624, CROSLAND 9570, DELUXE AF-723, AFK-518, DONALDSON EBB120041, EBB120042, P019327, P181107, FIAAM FL6202, FLEETGUARD AF331, AF826, FLEETLIFE FA-4L9851, FLEETRITE AFR-8331, Fram CA223, GENERAL MOTORS 6424677, GONHER GA29, GA29M, GUARDIAN G-4L9851, HASTINGS AF134, HEAVY DUTY AIR A-9851, HDA-9851, KRALINATOR LA107, LA181, NAPA 2851, NELSON 4L9851, 70271N, WM-1008-2S-A, NU-TECH N1116, PUROLATOR A32083, WGB SA-127, WIX 42851


* 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.