K&N Custom Air Filter Assembly 66-5080R

Part Number: 66-5080R
K&N Filters

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K&N Custom Air Filter Assembly 66-5080R Description

  • Custom air filter assemmblies have been specifically designed for use with any engine that uses a round element air cleaners housing
  • Designed to increase air flow and improve performance
  • High air flow with superior filtration
  • Washable and reusable lifetime air filter
  • 5.88 lb (2.67 kg)
Most parts include a base, K&N filter, top plate, and stud
Designed to provide more air flow to the engine
Designed for engines with round air cleaner housings
High air flow with excellent filtration
Washable and reusable lifetime air filter
One year limited warranty

K&N Custom 66 Series custom air cleaner assemblies are designed for use with any engine that uses a round element air cleaner housing. They incorporate our famous K&N Air Filters and provide serious air flow. Each complete assembly comes with base, element, top plate and stud.

Product Specifications:

Air Filter Color Red
Air Filter Height 2.25 in (57 mm)
Air Filter Inside Diameter 10.188 in (259 mm)
Air Filter Material Cotton Gauze
Air Filter Shape Unique
Inlet Diameter 5.125 in (130 mm)
Mounting Hardware Included Yes
Neck Flange 5.125 in (130 mm)
Overall Height 2.5 in (64 mm)


BrandK&N Filters
Part Number66-5080R
WarrantyManufacturers warranty
TypePerformance Air Filters - Custom


We offer FREE shipping on all orders over $99 to metropolitan or regional addresses (excludes big and bulky items).

Orders of less than $99 and orders shipped to rural addresses are subject to a shipping fee that is calculated at checkout. See full shipping details here.


We offer 100% Fitment Guarantee, but if you choose to return an item we offer a generous 60 day returns policy with a full refund. See returns policy and fitment information here.


All products sold by Sparesbox are sold under the Manufacturer’s warranty and conditions from the date of purchase, unless otherwise stated on the item.

Warranty claims must meet certain criteria and be sent to Sparesbox with a receipt to be eligible for a refund. See full warranty claim criteria here.

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