Air and Fuel› Fuel Pumps, Regulators and Components

K&N

High-Flow Fuel Filter

$41.99

SKU: PF-4000

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The K&N PF-4000 is a fuel filter designed for high flow rates and capacity. It features a high-strength carbon steel housing and a high-performance rolled seam that exceeds OEM pressure requirements. The filter media is made of high-performance cellulose glass to trap contaminants like rust, dirt, and scale.
Show original supplier description
The K&N PF-4000 fuel filter is engineered for high flow rates and substantial capacity, providing outstanding filtration for diesel fuel systems. It features a robust, high-strength carbon steel housing with a high-performance rolled seam that is built to exceed OEM pressure specifications, ensuring durability and reliability. Constructed with high-performance cellulose glass media, this K&N filter effectively traps contaminants such as rust, dirt, and scale, safeguarding your fuel system. Its design offers low restriction and large capacity, contributing to optimal engine performance and longevity. The filter has an outside diameter of 6-9/16 inches and a length of 4-5/16 inches. Each unit comes with one fuel filter, one gasket, and one O-ring. This K&N fuel filter is specifically designed for 1999-2003 Ford 7.3L Powerstroke engines. Applications include the Ford F250, F350, F450, and F550 models from 1999 to 2003. It also fits select 1998-2003 Ford Econoline Super Duty vans and 2000-2003 Ford Excursion vehicles.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandK&N
Part NumberPF-4000
CategoryAir and Fuel

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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