Parts Now Pay Later with
Log In Cart
Log In
Create An Account
Log In Cart
Your Cart Is Empty
Cart Total
Edit Your Cart Checkout
Free Shipping Over $299.99

Free Shipping Over $299.99

Orders of $299.99 or more ship free within the continental U.S.
Shipping to Alaska and Hawaii is additional and not included.
We do not ship international at this time.

Shipping Policy

This part does not have vehicle specific fitment. Please contact us if you need assistance.

K&N 2.75" Replacement Air Filter
Part Number: RU-4870

Images may be for reference only

K&N 2.75" Replacement Air Filter
Part Number: RU-4870

Be the first to review!
$51.99

Reward Points

It pays to shop with K Series Parts and our reward points program! For every $1.00 you spend you earn reward points.

They are easy to earn, just log in to your account when you check out. If you don't have one it is free and easy to setup.

They are easy to use during check out. Click on the "Have Reward Points?" on the shipping and payment selection page.

Reward Point Program Details

You earn 2 points for every $1.00 that you spend.

100 points equal a $1.00 discount.

Maximum discount per order is 2.5% of the order total.

There is no minimum order total to redeem points.

Points do not apply to shipping or sales tax.

Points are not redeemable for cash.

The point value per dollar, points earned per purchase, and order minimum are subject to change.

Earn 104 reward points. Learn More

2 In Stock
Ask us a Question

Product Details

Part Number: RU-4870
Brand: K and N Filters
  • Air Filter Shape Round Tapered
  • Filter Material Cotton Gauze
  • Washable Yes
  • Flange Inside Diameter 2.75 in (70 mm)
  • Flange Type Centered
  • Height 6.5 in (165 mm)
  • Base Outside Diameter 6 in (152 mm)
  • Top Outside Diameter 5 in (127 mm)

Due to the manufacturer's price control policy, this item may be excluded from promotions and discounts

WARNING: This product may contain chemicals known to the State of California to cause cancer or birth defects. www.P65Warnings.ca.gov.

Vehicle Fitment

This part does not have vehicle specific fitment. Please contact us if you need assistance.

Reviews ★★★★★ ★★★★★

No Reviews Yet!

Write a Review

Also Bought

Mishimoto 02-06 RSX Aluminum Radiator
$290.95
Mishimoto 02-06 RSX Aluminum Radiator
Skunk2 K-Series Silver Low-Profile Valve Cover Hardware
$62.99
Skunk2 K-Series Silver Low-Profile Valve Cover Hardware
Honda 02-06 RSX Passenger Front Swaybar Endlink
$30.17
Honda 02-06 RSX Passenger Front Swaybar Endlink
Honda 02-06 RSX Driver Side Front Swaybar Endlink
$30.17
Honda 02-06 RSX Driver Side Front Swaybar Endlink
NRG Carbon Fiber M10 x 1.5 5 Speed Type-R Style Shift Knob
$31.67
NRG Carbon Fiber M10 x 1.5 5 Speed Type-R Style Shift Knob

Free Shipping

K Series Parts offers free shipping for the majority of items that we sell that are shipped inside the continental United States.

Free shipping is done by the most cost effective shipping method for each order and delivery can takes 3 to 5 days on average.

Faster express shipping is available for an additional charge and calculated at checkout or on the edit basket page.

Certain products are not included in the free shipping, shipped via truck freight, or fulfilled by an outside supplier.

Alaska, Hawaii, and international orders are charged shipping and it is calculated by the website at checkout or on the edit basket page.

Instant Discount

Add this item to your cart to get an instant discount!

Not Available for Pickup

This item is not currently available for pick-up in our retail showroom and will be shipped directly to you.