Donaldson P606503 Engine Air Filter

Engine Air Filter Overview

Donaldson P606503 is a primary engine air filter built with RadialSeal technology for heavy-duty International applications. It uses cellulose media and is tested to ISO 5011 efficiency standards, with 99.9% efficiency for dependable intake air filtration.

Compatible with International WorkStar 7300, WorkStar 7400, 7400, 4300, 7300, 4300LP, 4400, 4100, 7500, 4200, 4100 SBA, 4200LP, CXT, RXT, 4400LP, and 8500 applications. This Donaldson air filter is identified by part number P606503 and cross-references Baldwin RS4636 and Dorman 46870 for the same application.

Key Features

• RadialSeal design for a secure sealing interface in the air intake system
• Primary filter construction for standard engine air filtration service
• Cellulose filter media for consistent particulate capture
• 99.9% efficiency rated to ISO 5011 test standards
• Built for International medium- and heavy-duty truck applications

Detailed Description

P606503 is an engine air filter for International trucks and vocational chassis that use a primary radialseal element. The filter’s dimensions and RadialSeal style are matched to the listed applications, helping maintain proper intake sealing and airflow control. If you are replacing an air filter on an International WorkStar 7300, 7400, or 4300, this Donaldson element provides a direct service replacement identified by part number P606503.

What It Helps Address

• Restricted airflow from a loaded or dirty engine air filter
• Dust and debris entering the intake system through a worn filter element
• Service intervals that require replacement of the primary air filter
• Fitment issues when the existing filter is specified as a radialseal primary element

Installation Notes and Tips

Verify the existing filter style, dimensions, and application notes before installation. Confirm that the housing is specified for a primary RadialSeal element and compare the old filter to P606503 for size and sealing profile. For International 4300, 7400, and related models, match the service part to the vehicle’s air intake specification before final installation.

Quality Assurance

Donaldson lists this filter as a RadialSeal primary element tested to ISO 5011 efficiency standards. The 99.9% efficiency rating reflects the filter’s measured performance under that test method.