K&N HP-4005 Engine Oil Filter

K&N HP-4005 Oil Filter for Ford Super Duty

The K&N HP-4005 oil filter is built for Ford F-250 Super Duty and Ford F-350 Super Duty applications that use a spin-on filter with a 1-1/16 in. - 16 thread. It is engineered for use with synthetic, conventional, and blended motor oils, with pleated synthetic-blend filtration media that helps keep contaminants out of the lubrication system while maintaining steady oil flow.

For 2011-2026 Ford F-250 Super Duty and 2011-2026 Ford F-350 Super Duty service, this filter combines a heavy-duty canister with a one-inch welded hex nut for easier removal during routine maintenance. The K&N HP-4005 is also backed by a 1-Year Limited Warranty.

Key Features

• High Flow Premium Media for oil filtration and flow consistency
• Anti-drain back valve helps retain oil in the filter after shutdown
• Bypass valve and 18-22 PSI relief valve for controlled oil circulation
• Viton rubber gasket material for sealing durability
• Spin-on style with 1-1/16 in. - 16 thread specification
• One-inch welded hex nut for filter removal
• Heavy-duty canister construction
• Part number: HP-4005

Detailed Description

K&N HP-4005 is a premium spin-on engine oil filter designed around the needs of Ford Super Duty diesel and gas truck maintenance where dependable filtration and service access matter. The pleated synthetic-blend media is built to trap contaminants while supporting consistent oil delivery, and the anti-drain back valve helps reduce dry starts after the engine sits. The Viton rubber gasket and durable canister add sealing and structural strength for regular service intervals. This part number, HP-4005, is a direct service choice for Ford F-250 Super Duty and Ford F-350 Super Duty owners looking for a filter with a wrench-off nut for easier removal.

This part cross-references Baldwin B7379 for the same application.

What It Helps Address

• Oil contamination from normal engine wear and debris
• Oil drain-back after shutdown that can contribute to delayed oil pressure
• Hard-to-remove filters during scheduled maintenance
• Inconsistent oil flow through a restricted or aging filter
• Seal leakage at the filter gasket interface

Installation Notes and Tips

Verify the thread specification, outside diameter, and height before installation on your Ford F-250 Super Duty or Ford F-350 Super Duty. Confirm the filter mounts as a spin-on unit and follow the vehicle manufacturer’s service procedure for oil changes and torque guidance. The welded hex nut can be used to remove the filter during service, but final tightening should follow the recommended installation method for the application.

Quality Assurance

K&N builds the HP-4005 with a heavy-duty canister, Viton rubber gasket material, and filtration media selected for engine protection and steady oil flow. It is covered by K&N’s 1-Year Limited Warranty.