Denso 143-3471 Air Filter

Denso FTF Air Filter for Ram HD Trucks

The Denso FTF Air Filter 143-3471 is an engine air filter built for direct replacement service on select Ram heavy-duty trucks. It is shaped as a square filter with a 51.0 height, 275.0 side A length, and 251.0 side B length for the specified applications.

Compatible with 2003-2009 Dodge Ram 2500 and 2003-2009 Dodge Ram 3500, this Denso air filter supports clean intake airflow for diesel and gas engine service where the listed fitment applies. The Denso 143-3471 is also a practical OE-style replacement for owners searching for a Ram 2500 air filter or Ram 3500 engine air filter by part number.

Key Features

• Engine air filter for air and fuel delivery service
• Square filter shape with 51.0 height
• Side A length: 275.0; Side B length: 251.0
• Direct fit for select 2003-2009 Dodge Ram 2500 and Ram 3500 applications
• Denso First Time Fit Air Filter line for OE-style replacement service
• Cross-references FRAM CA9589 and Wix 42846 for the same application

Product Line Details

Denso First Time Fit Air Filters are part of Denso’s engine filtration lineup and are engineered to meet the brand’s quality standards for replacement filtration. The line focuses on consistent fit and performance for vehicles that require a precise air filter match, including Ram HD truck applications covered by this part number.

Detailed Description

Denso 143-3471 is an engine air filter for select Dodge Ram 2500 and Dodge Ram 3500 models from 2003 through 2009. The listed dimensions and square profile help identify the correct replacement for the factory airbox in the covered applications. If you are searching for a Ram 2500 air filter or Ram 3500 engine air filter, this part number provides a direct-reference option for maintenance and service.

Common Issues This Part Can Address

• Restricted intake airflow from a dirty or clogged filter
• Reduced engine breathing caused by a worn filter element
• Routine maintenance replacement for scheduled air filter service
• Incorrect filter fitment when replacing by dimensions or part number
• Dust and debris buildup in the intake system from overdue filter changes

Installation Notes and Tips

Verify the filter shape and dimensions against the existing airbox before installation. Confirm vehicle year, make, and model against the listed fitment for 2003-2009 Dodge Ram 2500 and 2003-2009 Dodge Ram 3500. Inspect the air cleaner housing for debris before installing the new filter, and make sure the sealing surfaces are clean and properly seated.

Quality Assurance

Denso positions the First Time Fit Air Filter line as a quality-controlled replacement option backed by the company’s experience as a global OEM supplier in engine filtration components. This part number is built to meet Denso’s stated quality standards for replacement filtration service.

• Fits 2003-2009 Dodge Ram 2500, N/A
• Fits 2003-2009 Dodge Ram 3500, N/A