Search Button

Search

Account Button

Account

Basket Button

Basket Basket

Search Suggestions

Categories

Products

View All Results

Castrol - Win a chance to race Esteban Ocon
Close
K&N E-3990 - Custom Air Filter
Loading...

K&N E-3990 - Custom Air Filter

K&N E-3990 - Single

Single

£55.19

Checking Stock

or

2
4
6

Add To Basket

  • Description
  • Benefits
  • Technical Info
  • Shipping Explained

Description:
K&N E-3990 - Custom Air Filter

The K&N replacement air filter for RK Series air cleaner assemblies is designed to increase horsepower and acceleration while providing excellent filtration. The air filter is washable and reusable and designed to be used as a replacement air filter for specific K&N RK Series air cleaner assemblies for Harley-Davidson® motorcycles. The air filter is covered by the famous K&N Million-Mile Limited Warranty.

Please use our online lookup to find the correct air filter for your vehicle or contact us for more help.

Benefits:

  • Replacement air filter for specific RK Series air cleaner assemblies
  • Designed to boost horsepower and rate of acceleration
  • Washable and reusable
  • High air flow filter media provides exceptional filtration
  • Million Mile Limited Warranty®

Technical Information:

  • Air Filter Shape: Round Tapered
  • Product Style: Unique Air Filters
  • Filter Material: Cotton Gauze
  • Flanges: None
  • Height: 2.125 in (54 mm)
  • Package Contents: 1 Air Filter
  • Package Quantity: 1
  • Weight: 0.7 lb (0.3 kg)
  • Filter Re-Oiling Amount: 0.37 oz (11 ml)
  • Product Box Height: 3.5 in (89 mm)
  • Product Box Length: 6.31 in (160 mm)
  • Product Box Width: 6.56 in (167 mm)
  • Base Outside Diameter: 6.25 in (159 mm)
  • Inner Wire: No
  • Top Material: Zinc
  • Top Outside Diameter: 5.5 in (140 mm)
  • Top Style: Metal

Shipping

SHIPPING IS FREE* for orders of £75 and over , regardless of the weight of your order.
We've tried to keep all other shipping costs as low as we can.

Carriage starts at just £0.95 (inc VAT) for small items, with our most common courier rate set at £4.99 for orders of 5kg (enough for 5 litres of oil).

  • *Free shipping is available for UK Royal Mail, UPS Access Point™ (click & collect) and standard UK courier services (not express / priority / islands).
  • Courier surcharges mean we are unable to offer free "to the door" courier shipping from us in Cornwall up to Highlands / Grampian in Scotland - and because we send a lot of liquids, not every courier option is available to us. UPS Access Point™ (click & collect) is available as a free shipping option across Scotland, Wales and England, wherever there is a UPS Access Point™ Location.
  • Carriage charges are based on weight - please see our table of carriage costs for full details (although adding an item to your cart and viewing the calculated carriage is often easier!).
  • Priority shipping is also available.

How long will it take to get my order?

We give an estimate of delivery dates as you shop and in your basket. The vast majority of items are held in stock and dispatched from our UK warehouse and we'll do all we can to get your order to you as quickly as possible.

Share this product:

Review Opie Oils

Review Stars

Rated Excellent