K&N E-0646 High-Flow Air Filter for 2015-25 Audi A4/A5/S4/S5/Q5 1.4-3.0L

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Product Specification:

SKU:KNNE-0646

MPN: E-0646

UPC: 024844366023

Weight: 1.8 lb

Inventory: 38

Type: Air Filters - Drop In

Vehicle Fitment

2015-2025 Audi A4 (1.4 L-3.0 L, FWD/AWD)
2016-2025 Audi A5 (1.4 L-3.0 L, FWD/AWD)
2016-2018, 2021-2023 Audi S4 (2.0 L/3.0 L Turbo I4/V6, AWD)
2017-2024 Audi S5 (2.0 L/3.0 L Turbo I4/V6, AWD)
2018, 2021-2024 Audi Q5 (2.0 L/3.0 L Turbo I4/V6, AWD)

Features

High-flow oiled cotton gauze media engineered to increase horsepower and acceleration
Washable and reusable design - no frequent disposable filter replacements
Direct drop-in replacement for factory air box - no modifications required
Improved airflow while maintaining excellent filtration of contaminants
Designed for long service intervals - clean approximately every 75,000 miles under normal highway driving
Durable construction backed by K&N's no-hassle lifetime limited warranty
Pre-oiled and ready to install right out of the box
Red filter media adds visual appeal plus performance benefit

Specifications

Media: Multi-layer oiled cotton gauze
Shape: Round drop-in replacement
Height: 5.5 in (≈140 mm)
Outside Diameter: 6.625 in (≈168 mm)
Inside Diameter: 3.5 in (≈89 mm)
Weight: approx. 1.8 lb (≈0.8 kg)

Included Components

1x K&N E-0646 washable high-flow engine air filter
Instruction sheet detailing cleaning and installation

Product Description

The K&N E-0646 High-Flow Air Filter is specifically engineered for select Audi models including the A4, A5, S4, S5 and Q5 with engine sizes ranging from 1.4 L to 3.0 L for model years 2015 to 2025. This premium filter replaces the factory air element with a high-flow, washable, reusable design that improves engine breathing, enhances throttle response and contributes to long-term durability.

Designed for ease of use, the drop-in fit means no modifications are required - simply remove the factory filter and install this unit. Ideal for performance-minded Audi owners who want a maintenance-friendly upgrade, the E-0646 only needs cleaning roughly every 75,000 miles under normal driving conditions. And with the included lifetime limited warranty, it offers a cost-effective, eco-friendly alternative to repeated disposable filters.

Please note: Fitment is confirmed through model year 2025 for the listed vehicles. Always verify your engine (1.4 L-3.0 L) and drivetrain (FWD/AWD/AWD) before purchase.