BMW Parts
Audi Parts
VW Parts
Mini Parts
Porsche Parts
Pontiac Parts
Chevrolet Parts
Ford Parts
Cadillac Parts
Infiniti Parts
Nissan Parts
Hyundai Parts
Subaru Parts
Scion Parts
Jeep Parts
KW Suspension
Forgestar Wheels
Alufelgen Wheels
Avant Garde Wheels
VMR Wheels
Audi/VW Replica Wheels
aFe Intake
Injen Intakes
Remus Exhaust
Rogue Engineering


Left menu space
Left right-line Left space

aFe Drop-in Air Filter for B8 Audi A4


Quick Overview

The aFe Drop-in Air Filter for the Audi B8 A4 is an easy to install upgrade that will increase your power and gas mileage.

Sku # : aFe-Drop-in-Air-Filter-B8-A4-CM
If you want to feel more power in your B8 Audi A4, but don't want to go crazy on the modifications, then the aFe Drop-in Air Filter is the perfect choice for you. The OEM air filter uses low quality, restrictive paper elements that can clog and take away precious horsepower away from you. The aFe Drop-in Air Filter increases air flow by 58% compared to the OEM air filter. The aFe Drop-in Air Filter uses 5 layers of mesh cotton gauze media to provide your B8 A4 maximum airflow resulting in increases in horsepower. Also, because your engine is working less to draw in more air, you will see improved gas mileage on your A4. You are also able to wash and reuse the aFe Drop-in Filters saving you from spending money always having to buy replacement air filters. The aFe Drop-in Filter comes in 2 different types: Pro 5R and Pro Dry S.
aFe Drop-in Filter for B8 Audi A4 Features
  • Improved airflow by 58%
  • Easy, drop-in installation
  • Improved gas mileage
  • Air filter is reusable and washable
  • Filter efficiency rating: Pro 5R-98.6% Pro Dry S-99.2%
  • 2009-2011 Audi A4 Pro 5R Filter (30-10181)
  • 2009-2011 Audi A4 Pro Dry S Filter (31-10181)


aFe Drop-in Filter - Pro 5R
  • Oiled OE replacement filter
  • 5 layers of mesh cotton gauze media
  • 98.6 filtration efficiency
  • sku: 30-10181
aFe Drop-in Filter - Pro Dry S
  • Non-oiled OE replacement filter
  • 3 layers of mesh synthetic media
  • 99.2 filtration efficiency
  • sku: 31-10181

aFe Drop-in Filter Installation

Basic hand tools may be required for installation.
Click here for aFe Drop-in Filter Installation Guide

Most Popular

Right right-line