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1990-1991 Audi Coupe Quattro K&N Air Filter
K&N HIGH FLOW AIR FILTER
K&N's high flow air filter is made of multiple interwoven layers of surgical cotton gauze that provides high air flow with excellent filtration. It increases horsepower and acceleration while providing engine protection. Economical and environment friendly, this air filter also works with OEM vehicle electronics and guarantees to last the life of your vehicle.
Specifications- 13.13 in. L x 5 in. W x 1.56 in. H
- Panel style
Features- Provides 1 to 4 h.p.
- Washable and reusable
- Drop-in design

Notes- Lasts up to 50,000-mile before cleaning is required depending on drive condition
| Part Number |
Brand |
Price |
 |
| K33332001 |
K&N |
$38.69 |
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1990-1991 Audi Coupe Quattro Fram - Fram Extra Guard Air Filter
FRAM EXTRA LIFE AIR FILTER
Fram Extra Life air filter is the first air filter to utilize two integral filtering elements. It protects the engine and provides more airflow for improved performance. It also helps prevent damaging particles from entering the engine and causing increased engine wear. Lastly, it lasts 50 percent longer and stops 50 percent more dirt than any other brand.
Specifications- 13.16 in. L x 5.27 in. W x 2.25 in. H
- Panel style
| Part Number |
Brand |
Price |
 |
| FFCA3873 |
Fram |
$7.01 |
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1990-1991 Audi Coupe Quattro Beck Arnley Cabin Air Filter
BECK ARNLEY PARTICULATE CABIN AIR FILTER, SOLD INDIVIDUALLY -- 15.67 x 5.81 x 1.06 in. core dimensions; Panel type; A high quality, OE replacement particulate cabin air filter; With 90-day or 4,000-mile Beck Arnley limited warranty.
| Part Number |
Brand |
Price |
 |
| 042-2004 |
Beck Arnley |
$19.36 |
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1990-1991 Audi Coupe Quattro Beck Arnley Air Filter
BECK ARNLEY AIR FILTER
A high quality, OE replacement air filter.
Specifications- 13.13 in. L x 5.25 in. W x 1.63 in. H
- Panel style
| Part Number |
Brand |
Price |
 |
| 042-1355 |
Beck Arnley |
$8.41 |
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1990-1991 Audi Coupe Quattro Beck Arnley Air Filter
BECK ARNLEY AIR FILTER
A high quality, OE replacement air filter.
Specifications- 13.15 in. L x 5.28 in. W x 2.24 in. H
- Panel style
| Part Number |
Brand |
Price |
 |
| 042-1354 |
Beck Arnley |
$7.08 |
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1990-1991 Audi Coupe Quattro AFE - AFE Pro-dry S Air Filter
AFE PRO DRY S PERFORMANCE AIR FILTER, GRAY -- 99.2 percent filtration efficiency; Up to 416 CFM; Dry element; Panel style; Made of two layers of randomly porous synthetic fabric; Its 100 percent polyurethane construction withstands extreme engine temperature, significantly extending its service life; Features pleated depth loading media with large surface area that provides high flow, high dirt capacity, and high filtration efficiency; Eliminates the need for sealing gasket or grease through its progressive bump seal; It has washable and reusable media with the deepest pleats in the industry; Its oil free dry synthetic filtration media is the world's easiest-to-service performance air filter; Provides extended filter life in normal, everyday driving condition; An excellent choice for ease of maintenance.
| Part Number |
Brand |
Price |
 |
| A153110024 |
AFE |
$52.95 |
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1990-1991 Audi Coupe Quattro AFE - AFE Pro-5r Air Filter
AFE PRO 5R PERFORMANCE AIR FILTER, GREEN -- 98.6 percent filtration efficiency; Up to 550 CFM; Oiled element; Panel style; Made of five layers of progressively finer medical-grade cotton gauze; Its 100 percent polyurethane construction withstands extreme engine temperature, significantly extending its service life; Features pleated depth loading media with large surface area that provides high flow, high dirt capacity, and high filtration efficiency; Eliminates the need for sealing gasket or grease through its progressive bump seal; It has washable and reusable media with the deepest pleats in the industry; Provides your engine with the largest amount of high-flowing cold air, giving you the greatest horsepower and torque gains; It exceeds the necessary protection of your average everyday driving.
| Part Number |
Brand |
Price |
 |
| A153010024 |
AFE |
$52.95 |
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1990-1991 Audi Coupe Quattro Hastings Air Filter
HASTINGS PREMIUM AIR FILTER
Hastings Premium air filter is built to meet or exceed OE specifications and ensures to provide protection that the engine needs. Proven to separate and stabilize the pleated media on heavy-duty air filters. Features permapleat construction that forms dividers between pleats and prevents bunching for insured uniform air flow. It provides a continuous bead of adhesive around the circumference of a filter's metal wrap, either inner or outer, to lock the pleat tips in place and prevent movement.
Specifications- 13.19 in. L x 5.34 in. W x 1.66 in. H
- Panel style
Notes- Replaces Chrysler 53006317, Volkswagen 34133837, and Baldwin Pa2101A
| Part Number |
Brand |
Price |
 |
| HAAF500 |
Hastings |
$7.47 |
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1990-1991 Audi Coupe Quattro Interfil Air Filter
Interfil Air Filter
The Interfil Air Filter is an OE Equivalent replacement that maintains the OEM specifications for fit, durability and performance.
- Easy installation with a factory quality fit
- OE-quality engineering and materials.
- High airflow rate improves performance and fuel economy.
- Superior dust-holding capacity will increase filter life.
- Prevents particulate matter from entering the engine.
Warranty Information: 12 month - 12,000 mile limited warranty against defects in material and workmanship.
| Part Number |
Brand |
Price |
 |
| W0133-1637905 |
Interfil |
$10.95 |
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1990-1991 Audi Coupe Quattro Mann-Filter Air Filter
MANN Air Filter
MANN air filters remove destructive particles such as dust, pollen, sand, soot or even drop of water out of the intake air. They ensure that only clean air gets into the combustion chamber.
MANN air filters also prevent damage caused in various ways to electronic components such as highly delicate sensors (hot-film air flow meters). MANN air filters have other important functions. - OE Equivalent and a Direct fit Application.
- Improves performance and fuel economy.
- Guarantees optimum control of the fuel-air mixture.
- Prevents abrasive particulate matter from entering the engine.
The MANN air filters lessen intake noise, control temperature regulation and seal off adjacent components. MANN is setting new standards for the air filtration of tomorrow with its air filter solutions.
Warranty Information: 12 month - 12,000 mile limited warranty against defects in material and workmanship.
| Part Number |
Brand |
Price |
 |
| W0133-1637905 |
Mann-Filter |
$7.95 |
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1990-1991 Audi Coupe Quattro Mann-Filter Air Filter
MANN-FILTER AIR FILTER, ORANGE -- 13.15 in. L x 5.28 in. W x 2.24 in. H; Dry element; Panel style; Made of high quality paper material; Filters harmful particles such as dust, pollen, sand, soot or even drops of water out of the intake air; A high quality, OE replacement air filter.
| Part Number |
Brand |
Price |
 |
| MANC34109 |
Mann-Filter |
$6.48 |
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