K& N's replacement High-Flow Air Filters are designed to increase horsepower while providing exceptional engine protection, and are covered by K& N's No-Hassle Lifetime Limited Warranty.

K& N washable, reusable High-Flow Air Filters feature a state-of-the-art design of layered, oiled cotton media engineered to improve airflow and capture contaminants, and are designed to provide an increase in horsepower. Each performance air filter is reusable, engineered to last for the entire lifespan of your vehicle, and backed by K& N's No-Hassle Lifetime Limited Warranty. K& N drop-in replacement filters are designed to install easily into your factory air box. Upgrade today and start enjoying superior airflow and superior performance from K& N's most popular product!

• Designed To Boost Horsepower And Acceleration
• Washable And Reusable
• High Air Flow With Exceptional Filtration
• Lasts Up To 50000 Miles Before Cleaning
• Works With Original Equip. Mfg. Vehicle Electronics
• Will

Air Filter Material:	Cotton Gauze
Air Filter Shape:	Unique
Filter Re-Oiling Amount:	2.83 oz (84 ml)
Flanges:	None
Frame Design:	Flexible
Height:	5.5 in (140 mm)
Inner Wire:	No
Inside Diameter:	3.5 in (89 mm)
Item Type:	High Performance
Oil Included:	Yes
Outside Diameter:	6.625 in (168 mm)
Package Contents:	1 Air Filter
Package Material:	Corrugated
Package Quantity:	1
Package Type:	Box
Pre-Screened:	No
Product Style:	Unique Air Filters
Prop 65 (C, R or CR):	CR
Prop 65 - Short Label:	WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov
Prop 65 Warning Label:	https://www.knfilters.com/images/l/prop65.jpg
Prop 65 Yes/No:	Yes
Title:	K& N E-0646 Replacement Air Filter
Warranty:	No-Hassle Lifetime Limited
Washable:	Yes
Weight:	1.8 lb (0.8 kg)

• Audi: 8W0133843D
• Audi: 8W0133843C
• Ryco: A1939
• Audi: 8W0133843
• Mann-Filter: C17013
• Service Pro: MA10639
• BMC: FB96004
• Ryco: A2002
• Wix: 49043

• 2015 Audi A4        Note: 8W/B9 Model; K& N Replacement Air Filter
• 2015-2016 Audi A4 Quattro        Note: 8W/B9 Model; K& N Replacement Air Filter
• 2016 Audi S4        Note: Unique; H-5.5 in.; OD-6.625 in.; ID-3.875 in.; Fits 2015-18 Audi A4 1.4L F/I
• 2017 Audi A4        Note: 249/252BHP; Exc. Ultra; K& N Replacement Air Filter
• 2017-2018 Audi A4        Note: 249BHP; Exc. Ultra; K& N Replacement Air Filter
• 2019 Audi A4        Note: Unique; H-5.5 in.; OD-6.625 in.; ID-3.875 in.; Fits 2015-18 Audi A4 1.4L F/I
• 2017-2018 Audi A4        Note: Unique; H-5.5 in.; OD-6.625 in.; ID-3.875 in.; Fits 2015-18 Audi A4 1.4L F/I;249BHP; 252BHP; Exc. Ultra~249BHP; Exc. Ultra
• 2017 Audi A4 allroad        Note: K& N Replacement Air Filter
• 2017-2019 Audi A4 Quattro        Note: K& N Replacement Air Filter
• 2018 Audi S4        Note: Unique; H-5.5 in.; OD-6.625 in.; ID-3.875 in.; Fits 2015-18 Audi A4 1.4L F/I
• 2018 Audi A4 Quattro        Note: Unique; H-5.5 in.; OD-6.625 in.; ID-3.875 in.; Fits 2015-18 Audi A4 1.4L F/I;249BHP
• 2018 Audi A5        Note: K& N Replacement Air Filter
• 2018-2020 Audi A5 Quattro        Note: K& N Replacement Air Filter
• 2018 Audi A5 Quattro        Note: Unique; H-5.5 in.; OD-6.625 in.; ID-3.875 in.; Fits 2015-18 Audi A4 1.4L F/I
• 2018 Audi A5 Sportback        Note: Unique; H-5.5 in.; OD-6.625 in.; ID-3.875 in.; Fits 2015-18 Audi A4 1.4L F/I;252BHP
• 2018 Audi Q5        Note: Unique; H-5.5 in.; OD-6.625 in.; ID-3.875 in.; Fits 2015-18 Audi A4 1.4L F/I
• 2018-2019 Audi RS5        Note: K& N Replacement Air Filter
• 2018 Audi S5        Note: K& N Replacement Air Filter
• 2018-2019 Audi SQ5        Note: K& N Replacement Air Filter
• 2021-2023 Audi RS5        Note: K& N Replacement Air Filter
• 2021-2023 Audi Q5        Note: Unique; H-5.5 in.; OD-6.625 in.; ID-3.875 in.; Fits 2015-18 Audi A4 1.4L F/I
• 2021-2023 Audi S5        Note: Unique; H-5.5 in.; OD-6.625 in.; ID-3.875 in.; Fits 2015-18 Audi A4 1.4L F/I
• 2022 Audi Q5 Sportback        Note: Unique; H-5.5 in.; OD-6.625 in.; ID-3.875 in.; Fits 2015-18 Audi A4 1.4L F/I
• 2015-2016 Audi A4        Note: Unique; H-5.5 in.; OD-6.625 in.; ID-3.875 in.; Fits 2015-18 Audi A4 1.4L F/I
• 2015-2017 Audi A4 Quattro        Note: Unique; H-5.5 in.; OD-6.625 in.; ID-3.875 in.; Fits 2015-18 Audi A4 1.4L F/I
• 2016 Audi A4        Note: 8W/B9 Model; 45TFSi; K& N Replacement Air Filter
• 2016-2017 Audi S4        Note: 8W/B9 Model; K& N Replacement Air Filter
• 2017 Audi A4 allroad        Note: Unique; H-5.5 in.; OD-6.625 in.; ID-3.875 in.; Fits 2015-18 Audi A4 1.4L F/I
• 2018-2020 Audi A5 Sportback        Note: K& N Replacement Air Filter
• 2018-2019 Audi RS5        Note: Unique; H-5.5 in.; OD-6.625 in.; ID-3.875 in.; Fits 2015-18 Audi A4 1.4L F/I
• 2018 Audi S4        Note: K& N Replacement Air Filter
• 2018 Audi S5        Note: Unique; H-5.5 in.; OD-6.625 in.; ID-3.875 in.; Fits 2015-18 Audi A4 1.4L F/I
• 2018-2019 Audi SQ5        Note: Unique; H-5.5 in.; OD-6.625 in.; ID-3.875 in.; Fits 2015-18 Audi A4 1.4L F/I
• 2021-2023 Audi RS5        Note: Unique; H-5.5 in.; OD-6.625 in.; ID-3.875 in.; Fits 2015-18 Audi A4 1.4L F/I
• 2021-2023 Audi S5        Note: K& N Replacement Air Filter
• 2021-2023 Audi Q5        Note: K& N Replacement Air Filter
• 2022 Audi Q5 Sportback        Note: K& N Replacement Air Filter