Denso 143-3805 Engine Air Filter

Denso FTF Air Filter for Mercedes-Benz

The Denso FTF Air Filter 143-3805 is an engine air filter built for select Mercedes-Benz applications. It is engineered to meet Denso quality standards and support consistent filtration performance for everyday driving and demanding engine conditions.

Compatible With Mercedes-Benz SL550, GLE63 AMG, GLS550, CLS550, S550, and other listed models across 2011-2020 applications, this filter is a direct-fit replacement for routine maintenance. The Denso First Time Fit line is designed for accurate fitment and dependable OE-style service.

Key Features

• Engine air filter for select Mercedes-Benz vehicles
• Denso First Time Fit product line for OE-style replacement fitment
• Built to Denso quality standards for filtration performance
• Supports clean airflow into the engine intake system
• Part number 143-3805 for easy identification

Product Details

Denso 143-3805 is an engine air filter for Mercedes-Benz models including SL550, GLE63 AMG, GLS550, CLS550, and S63 AMG applications. It is part of Denso’s First Time Fit Air Filter line, which focuses on replacement parts engineered to match the original fit and function expected in service work. This part cross-references Mercedes-Benz 278 094 00 04 for the same application.

Common Reasons to Replace

• Restricted airflow from a dirty or clogged engine air filter
• Reduced engine responsiveness caused by intake contamination
• Maintenance service for Mercedes-Benz SL550, GLE63 AMG, or GLS550 models
• Visible debris buildup in the intake filtration element
• Routine replacement during scheduled air filter service

Installation Notes

Verify the vehicle year, model, and engine air filter application before installation. Confirm the housing style and compare the old filter to Denso 143-3805 to ensure proper fitment. For best results, inspect the air box and intake tract for dirt or damage before installing the new filter.

Quality Assurance

Denso states that First Time Fit Air Filters are engineered to meet its quality standards, with quality assurance provided for the product line. Denso’s background as a global OEM supplier in engine filtration components supports the design and manufacturing approach behind this filter.