K&N Replacement Air Filter for 08-13 Audi R8 4.2L V8 K&N Engineering KNNE-0668
K&N Replacement Air Filter for 08-13 Audi R8 4.2L V8 K&N Engineering KNNE-0668
Click to zoom in

K&N Replacement Air Filter for 08-13 Audi R8 4.2L V8

KNNE-0668
024844312167
Air Filters - Drop In
20+ Units In Stock - Ships Next Business Day
$ 346.99
$ 346.99

SKU: E-0668 | UPC: 024844312167

K&N E-0668 Replacement Air Filter for 2008-2013 Audi R8 4.2L V8

K&N E-0668 is a direct drop-in replacement high-flow air filter designed for 2008-2015 Audi R8 models and 2013-2014 Porsche Boxster Cayman. This washable reusable filter uses layered oiled cotton media to boost airflow increase horsepower and protect the engine from contaminants. Backed by K&N No-Hassle Lifetime Limited Warranty it lasts the life of your vehicle while saving money over disposable filters.

Key Features

  • 4 Layers of Protection: Multiple layers of premium cotton gauze with tacking agent form a mesh that traps dirt and contaminants while allowing more air through
  • Clean Every 5 Years: Requires cleaning only every 75000 miles under normal highway driving or 5 years at 15000 miles per year
  • Easy Installation: Pre-oiled and ready to drop into factory airbox for quick performance gains with no tools needed
  • Engineered Power: Advanced media design boosts horsepower acceleration and engine performance
  • Reusable Saves Money: One K&N filter replaces multiple disposables saving up to $125 over 200000 miles versus OE filter MSRP

Product Notes

  • Filter measures 9.188 in L x 7.563 in W x 1.063 in H weighs 1 lb
  • Clean with K&N Recharger kit every 75000 miles for longevity
  • Ships in protective box 9.19 x 7.56 x 1.75 inches

Installation Notes

  • Professional installation recommended.
  • Remove factory filter and drop in K&N E-0668 no cutting or modifications
  • Compatible with OEM airbox hardware

This Part Fits

Year Make Model Submodel
2008-2012 Audi R8 Base
2014-2015 Audi R8 Base
2011-2012 Audi R8 Spyder
2014-2015 Audi R8 Spyder
2013-2014 Porsche Boxster Base
2013-2014 Porsche Boxster S
2014 Porsche Cayman Base
2014 Porsche Cayman S

Why Choose K&N?

  • Over 60 years designing performance filters used worldwide
  • Manufactured with premium materials for lifetime durability
  • Engineered in USA for precise vehicle fit and power gains

Frequently Asked Questions

  • Q: Will E-0668 fit my 2010 Audi R8 4.2L V8?
    A: Yes fits all listed 2008-2015 Audi R8 Base and Spyder models with 4.2L V8 engine
  • Q: What is the filter material?
    A: Layered oiled cotton gauze panels with rubber edging for secure seal and high airflow
  • Q: What does the warranty cover?
    A: No-Hassle Lifetime Limited Warranty covers defects in materials or workmanship limitations apply see K&N site

Shipping & Handling

  • Method: UPS or USPS Ground
  • Availability: In stock - ships same or next business day
  • Packaging: K&N branded box 9.19 x 7.56 x 1.75 inches
  • Weight: 1 lb

Request For Information

Have questions about K&N Replacement Air Filter for 08-13 Audi R8 4.2L V8? Fill out the form below and we'll get back to you by the next business day.
Air Filters

Air Filters

Air filters and intake filtration parts for cars, trucks, SUVs, Jeeps, and diesel platforms are stocked at Black Ops Auto Works. Shop direct-fit filters, drop-in replacement filters, universal clamp-on filters, cabin air filters, HVAC filters, engine breather filters, pre-filters, and velocity stacks for Hellcat, Trackhawk, TRX, Grand Cherokee, Challenger, Charger, Camaro, Corvette, Mustang, F-150, Tacoma, Tundra, BMW, and Honda platforms. Every product is filterable by year, make, model, trim, engine, and filter dimension so the correct part ships the first time. Black Ops Auto Works carries 3,397 air filter SKUs across direct-fit, universal, cabin, and pre-filter categories. What This Collection Covers Air filters remove dirt, dust, and debris from air entering the engine or cabin. This collection spans OE-style direct-fit and drop-in filters, universal cone and clamp-on filters for custom intakes, cabin and HVAC filters for interior air, engine breather filters for crankcase ...

View Air Filters Products
Air Filters - Drop In

Air Filters - Drop In

Drop in air filters and replacement panel filters for cars, trucks, SUVs, and Jeeps are stocked at Black Ops Auto Works. Shop reusable and dry media panel filters that fit directly into your factory air box from K&N, aFe, AEM, Injen, BMC, and GReddy for vehicles ranging from Corvette and Mustang to Porsche, BMW, and Ford Super Duty diesel trucks. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct filter ships the first time. Black Ops Auto Works carries 1,453 drop in air filter SKUs across dozens of vehicle platforms. What This Category Covers Drop in air filters replace the factory paper filter element inside your existing air box without changing the intake tubing or housing. This collection spans reusable oiled cotton filters, dry synthetic media filters, and OEM style replacement panels sized to fit factory air box dimensions across nearly every make and model. Reusable and Dry Media Options Reusable oiled cotton filters from K&...

View Air Filters - Drop In Products
K&N Engineering

K&N Engineering

K&N Engineering filters and intakes for Jeep, RAM, Dodge, Chevy, Ford, Toyota, BMW, and Cadillac platforms are stocked at Black Ops Auto Works. Shop cold air intakes, Aircharger and NextGen intake systems, reusable panel filters, drop-in filters, universal clamp-on filters, oil filters, cabin filters, fuel filters, and filter cleaning kits for HEMI, Cummins diesel, EcoBoost, and LS/LT engine builds. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 1,927 K&N Engineering SKUs across intake, filtration, and maintenance categories. What This Brand Covers K&N Engineering built its reputation on reusable, high flow air filtration. This collection spans complete cold air intake systems, direct fit replacement filters, universal clamp-on filters for custom builds, and maintenance items like oil filters, fuel filters, and cabin filters. Cold Air Intakes and Intake Systems K&am...

View K&N Engineering Products
Porsche Parts & Accessories

Porsche Parts & Accessories

Porsche parts and accessories for 911, Cayman, Boxster, 718, Macan, Cayenne, and Panamera models are stocked at Black Ops Auto Works. Shop exhaust systems, sport cats, downpipes, muffler bypass pipes, X-pipes, valve controllers, coilovers, sway bars, shocks and struts, brake pads, rotors, caliper rebuild kits, carbon fiber vents and trim, intake filters, cooling parts, drivetrain upgrades, and engine components for chassis codes 996, 997, 991, 992, 986, 987, 981, 982, 964, 993, 955, 957, 958, and 944 Turbo. Every product is filterable by year, make, model, chassis code, and trim so the correct part ships the first time. Black Ops Auto Works carries 1,407 Porsche SKUs across exhaust, suspension, brakes, exterior, cooling, and drivetrain categories. What This Collection Covers Porsche has produced distinct 911, Cayman, Boxster, Macan, Cayenne, and Panamera platforms across multiple chassis generations, and fitment does not carry over between them. This collection groups parts conf...

View Porsche Parts & Accessories Products
Military & First Responder Discounts

Military & First Responder Discount Program

Black Ops Auto Works proudly honors active duty military, veterans, National Guard, reserves, police officers, firefighters, and EMTs with an exclusive 5% discount on all performance parts and carbon fiber upgrades. Verify instantly and start saving today.

Learn More & Apply

Your cart

×