K&N 33-2573 Replacement Air Filter
Upgrade your intake with the K&N 33-2573 Replacement Air Filter. This high-flow, reusable, washable performance panel air filter is a direct drop-in for the factory airbox, making it a simple, effective engine air filter upgrade for classic Audi and BMW models. Designed to improve airflow and filtration versus a standard paper air filter, the K&N 33-2573 helps your engine breathe more freely for a sharper, more responsive drive while maintaining excellent protection.
At Nforcd we use K&N panel filters on our own builds and our customers love them for their quality, fit and long-term value. If you are searching for K&N 33-2573, K&N replacement air filter, performance air filter, reusable air filter, washable air filter, high flow panel filter or OEM replacement engine air filter for Audi S6 C4, Audi V8 Quattro, BMW E32 730i, BMW E34 530i, BMW E34 535i, this is the correct part.
Key benefits
- Direct-fit, drop-in performance panel air filter
- High-flow cotton media for improved airflow
- Washable and reusable for long service life
- Fits the stock airbox for quick, tool-free servicing
- Cost-effective upgrade over disposable paper filters
Confirmed compatibility
Please utilise our product recommender to double check fitment. If you need help, contact sales@nforcd.com.
Audi
- S6
- S6 C4 Saloon (4A2): S6 4.2 Quattro (213 kW / 290 HP) (06/1994 - 10/1997)
- S6 C4 Avant (4A5): S6 4.2 Quattro (213 kW / 290 HP) (06/1994 - 12/1997)
- V8
- V8 (441, 442, 4C2, 4C8): 3.6 Quattro (180 kW / 245 HP) (04/1993 - 02/1994)
- V8 (441, 442, 4C2, 4C8): 3.6 Quattro (184 kW / 250 HP) (10/1988 - 02/1994)
- V8 (441, 442, 4C2, 4C8): 4.2 Quattro (206 kW / 280 HP) (10/1991 - 02/1994)
BMW
- 5 Series
- 530i: E34 3.0 (138 kW / 188 HP) (1988 - 1991)
- 535i: E34 3.5 (155 kW / 211 HP) (1988 - 1995)
- 7 Series
- 730i: E32 3.0 (138 kW / 188 HP) (1986 - 1994)
- 730i: E32 3.0 (145 kW / 197 HP) (1986 - 1994)
- 735i: E32 3.5 (155 kW / 211 HP) (1986 - 1992)
- 735i: E32 3.5 (162 kW / 220 HP) (1986 - 1987)
Compatibility check before dispatch
To ensure the part fits your vehicle, we run a compatibility check prior to dispatch. Provide your UK registration number or the last 7 digits of your VIN at checkout and our team will confirm fitment.
Professional fitting available
Want it fitted by enthusiasts who know these cars inside out? Book fitting with Nforcd in Warwickshire. Request a quote at sales@nforcd.com.
Part number
33-2573
Popular search terms
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