Denso 143-3779 Engine Air Filter

Denso FTF Air Filter for Nissan Altima

The Denso First Time Fit Air Filter, part number 143-3779, is an engine air filter built to meet Denso quality standards for direct replacement service. It is a fitment-based choice for 2019-2024 Nissan Altima models and supports clean intake airflow for routine maintenance.

Key Features

• Engine air filter for air and fuel delivery service
• First Time Fit product line focused on OE-style replacement fitment
• Built to Denso quality standards for consistent filtration performance
• Fits 2020-2024 Nissan Altima, N/A
• Fits 2019 Nissan Altima, N/A
• Part number 143-3779 for ordering and catalog lookup

Detailed Description

Denso 143-3779 is an engine air filter from the FTF Air Filter line, developed for drivers who want a direct replacement for the factory air filter on select Nissan Altima applications. This filter is listed for 2020-2024 Nissan Altima and 2019 Nissan Altima models, making it a practical service part for maintaining intake system cleanliness on the Altima platform. The First Time Fit line is positioned as Denso’s OE-style replacement range, with quality control focused on fit and performance consistency. This part also cross-references Purolator A31489 for the same application.

Common Uses

• Replaces a dirty or restricted engine air filter
• Helps restore normal intake airflow on a Nissan Altima
• Supports routine scheduled maintenance for 2019-2024 Nissan Altima models
• Addresses reduced filtration efficiency from a loaded filter element
• Helps reduce intake contamination entering the engine air stream

Installation Notes and Tips

Verify the vehicle year before ordering and match the part number 143-3779 to the application listed for your Nissan Altima. Inspect the air box, sealing surfaces, and intake tract during replacement, and confirm the old filter orientation before installing the new one. For best results, replace the filter during regular maintenance intervals or sooner if the existing element is visibly dirty.

Quality Assurance

Denso states that its First Time Fit Air Filters are engineered to meet its high quality standards, with quality assurance provided for the product line. Denso’s background as a global OEM supplier in engine filtration components supports the brand’s focus on fit and service consistency.