Log In Cart
Log In
Create An Account
Log In Cart
Your Cart Is Empty
Cart Total
Edit Your Cart Checkout
Free Shipping Over $349.99 Earn Builders Club Points On Every Order 0% Affirm Financing

Free Shipping Over $349.99

Orders of $349.99 or more ship free in the continental U.S., typically in 3 to 5 days.

Alaska, Hawaii, and international orders are charged shipping at checkout. Truck freight and supplier-fulfilled items are not included.

Shipping Policy

Builders Club Points

Earn 2 points for every $1.00 you spend. 100 points equals $1.00 off. Log in at checkout to collect them, then redeem on the payment screen.

How Points Work

0% Affirm Financing

Pay over time at checkout. Select Affirm as your payment method to see your terms, including 0% APR options when offered.

A down payment may be required. Affirm decides approval, not K Series Parts.

Affirm Details

Add your vehicle

Find parts for your build.
This part does not have vehicle specific fitment. Please contact us if you need assistance.

Radium Engineering .75in ID Air Filter
Part Number: 18-0042

Images may be for reference only

Radium Engineering .75in ID Air Filter
Part Number: 18-0042

Be the first to review!
Retail: $29.95
$28.45
Save: $1.50 (5%)

Earn 56 Builders Club Points. Learn More

10+ In Stock
Ask us a Question

Product Details

Part Number: 18-0042
Brand: Radium Engineering
Color: Green
This Radium Engineering Air Filter is great for breather applications. 
  • Inner Diameter: 0.75in
  • Outer Diameter Bottom: 2.17in
  • Outer Diameter Top: 2.0in
  • Total Height: 2.38in
  • Inlet Type: Straight
  • Filter Base: Rubber
  • Style: Cylinder

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

K-Tuned Idle Air Assist Delete Kit
K-Tuned Idle Air Assist Delete Kit
$21.99
Hondabond
Hondabond
$13.66
Honda K-Series Valve Cover Gasket
Honda K-Series Valve Cover Gasket
$19.07
Acuity Satin Black Podium Oil Cap
Acuity Satin Black Podium Oil Cap
$69.00
Vibrant ExtremeShield 1200 Flexible Tubing: 1'' O.D. 5 Foot
Vibrant ExtremeShield 1200 Flexible Tubing: 1'' O.D. 5 Foot
$18.50
Skunk2 RBC and Skunk2 Intake Manifold Intake Coupler
Skunk2 RBC and Skunk2 Intake Manifold Intake Coupler
$23.04
K-Tuned V2 Black K20 Oil Dipstick
K-Tuned V2 Black K20 Oil Dipstick
$59.99
SPC 16mm Front Camber Kit
SPC 16mm Front Camber Kit
$28.40
Radium Engineering Catch Can Petcock Drain Kit
Radium Engineering Catch Can Petcock Drain Kit
$28.45
Honda K-Series Spark Plug Tube Seal
Honda K-Series Spark Plug Tube Seal
$8.40
Injen Black Hydroshield: Fits X-1012, X-1013, X-1014, X-1056
Injen Black Hydroshield: Fits X-1012, X-1013, X-1014, X-1056
$30.26
Muteki HR38 Black Chrome Blue Ring M12x1.50 Open End Lug Nuts
Muteki HR38 Black Chrome Blue Ring M12x1.50 Open End Lug Nuts
$127.50

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.