Cold Air Intake for Ford F-250 (1988-1995) 5.8L

High-Flow Cold Air Intake for 1988-1995 Ford F-250 (OBS F-Series)

What it Does: The Cold Air Intake Kit replaces the restrictive factory dual-hose airbox on the 1988-1995 F-250 to increase volumetric efficiency and sharpen throttle response across the RPM band.

The Stock Ford F-250 Intake Restriction

The OEM intake on the OBS F-Series equipped with the 351 Windsor (5.8L V8) uses an enclosed airbox feeding dual corrugated rubber hoses directly to the twin-bore throttle body. These ribbed hoses generate high boundary-layer turbulence and parasitic drag at highway speeds. Combined with a dense paper filter and a box prone to engine bay heat soak, the factory Speed Density configuration starves for volume during high-load hauling, hurting midrange torque.

The Engineering Solution

This intake system replaces the restrictive factory tract with lightweight, mandrel-bent T-304 aluminum piping. The smooth interior walls eliminate turbulence, while the polished exterior provides superior heat dissipation over thin plastic. Paired with an oiled-free, washable conical dry filter, the system maximizes CFM airflow straight into the dual plenum without fouling downstream intake sensors. The result is laminar airflow delivering 7-10% horsepower and 6-8% torque gains under load.

What's Included

• 1 x Polished T-304 Aluminum Intake Pipe Assembly
• 1 x High-Flow Washable Reusable Dry Cone Air Filter
• All Required Mounting Clamps, Couplers, and Hardware

Technical Specifications

Compatibility

• 1988-1995 Ford F-250 5.8L V8 (Dual stock intake tube, non-MAF models only)

Frequently Asked Questions & Fitment Warnings

Does this fit the OBS F-Series F-250?

Yes, this is a direct fit for the 1988-1995 Ford F-250 equipped with the 351 Windsor (5.8L) engine. Fits dual-inlet, non-MAF models only; does not fit mass airflow (MAF) equipped trucks or other engine sizes.

Does this intake require an aftermarket ECU tune?

No, this intake operates within the factory Ford Speed Density fuel parameters and does not require an aftermarket tune or ECU calibration.

The Ford Heavy-Duty Standard

Built for the rigorous demands of three-quarter-ton hauling, this aluminum intake kit provides the airflow capacity needed to pull heavy payloads up steep grades without thermal fatigue.