Performance Air Filter for Audi A4 A5 (2010-2015) 4.2L TFSI RS4 RS5 Engines

Upgrade your RS4 or RS5's breathing with a precision-engineered replacement filter that delivers superior airflow and finer filtration than factory. Washable, reusable, and built to last the life of your Audi.

Give Your High-Revving V8 the Air It Deserves

The B8-generation RS4 and RS5 represent the pinnacle of Audi's naturally aspirated V8 engineering—a 4.2-liter masterpiece that screams to 8,250 RPM and produces 450 horsepower of pure mechanical fury. But that legendary engine can only breathe as well as its air filter allows. The factory paper element was designed for longevity and ease of manufacturing, not maximum performance. This BMC replacement filter changes that equation, fitting directly into your OEM airbox while delivering measurably better airflow and filtration.

This isn't just a drop-in upgrade—it's a permanent performance solution. BMC's multi-layered cotton gauze construction filters particles down to 7 microns (versus 10 microns for the factory filter), meaning cleaner air enters your engine while significantly more volume flows through. The result is improved throttle response across the entire rev range, particularly noticeable when you're pushing hard through the upper gears. And because it's washable and reusable, you'll never need to buy another air filter again.

Key Features at a Glance

• Superior Filtration Performance: Multi-layered cotton gauze captures contaminants as small as 7 microns—30% finer than OEM paper filters—protecting your engine from microscopic debris.
• Increased Airflow: Low-viscosity oil treatment and optimized gauze density allow significantly more air volume to reach your V8 without sacrificing filtration quality.
• Full Molding Construction: Produced as a single piece with no welded joints, eliminating weak points and preventing separation or breakage under high-flow conditions.
• Epoxy-Coated Alloy Mesh: External mesh layer provides structural support and protects the cotton gauze from fuel vapors and oxidation caused by engine bay humidity.

How It's Used: Installation & Fitment

Installation is completely straightforward—this is a true drop-in replacement. Simply open your factory airbox, remove the old paper filter, and install the BMC element in its place. No modifications, no adapters, no trimming required. The filter's precision-molded rubber gasket ensures a perfect seal against your airbox housing, maintaining proper filtration while maximizing airflow. Total installation time is under five minutes with no tools required beyond what's needed to access your airbox.

Product Durability & Material Details

BMC filters are engineered for the demanding environment inside a high-performance engine bay. The multi-layered cotton gauze is soaked in low-viscosity oil that captures particles without restricting airflow, while the epoxy-coated alloy mesh provides long-term structural integrity against heat, vibration, and exposure to fuel vapors. The molded rubber frame uses a high-durability compound with excellent adhesion characteristics, ensuring a perfect seal regardless of airbox shape or temperature cycling. Unlike disposable paper filters that degrade over time, this BMC filter is designed to last the lifetime of your vehicle when properly maintained.

Your Benefits at a Glance

• Lifetime Investment: Washable and reusable design eliminates the recurring cost and waste of disposable paper filters—this is the last air filter you'll ever buy.
• Sharper Engine Response: Increased airflow supports more efficient combustion, resulting in crisper throttle response and improved power delivery throughout the rev range.
• Better Engine Protection: Finer 7-micron filtration captures smaller particles than OEM filters, extending engine life and maintaining performance over time.
• Easy Maintenance: Clean and re-oil using the BMC regeneration kit whenever needed—simple maintenance restores like-new performance indefinitely.

Extra Info & Specifications

Fitment:

• Audi A4 (8K, B8) 4.2 TFSI RS4: 2012–2015
• Audi A5 + Cabriolet (8T, 8F) 4.2 TFSI RS5: 2010–2015

Product Specifications:

• BMC Code: FB719/20
• Filter Dimensions: 210mm (B) x 160mm (A)
• Filtration Level: 7 microns
• Construction: Full-molded cotton gauze with epoxy-coated alloy mesh
• Filter Type: Washable and reusable
• Condition: Pre-oiled and ready to install

Package Includes:

• BMC FB719/20 High-Performance Replacement Air Filter (Pre-Oiled)

Maintenance:

• Filter is washable and regenerable using BMC Regeneration Kit (sold separately)
• Cleaning interval varies based on driving conditions; typically every 12,000–15,000 miles