$60.99 USD
MSRP $94.99 35.8% Off
Free Ground Shipping!
In Stock & Ready to Ship! Find a Dealer

K&N RF-1040 Universal Clamp-On Air Filter

Universal Air Filters > Universal Clamp-On Air Filter
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   4.8 out of 5 stars   6 Customer Reviews
  • Designed to increase horsepower and acceleration
  • Hundreds of sizes and shapes for most applications
  • High air flow with excellent filtration
  • Clamp-on washable and reusable air filter
  • Malleable flanges
  • One year limited warranty
K&N's Universal Air Filters are designed and manufactured for a wide variety of applications including racing vehicles, radio-controlled cars, generators, snowmobiles, tractors, and other applications. Regardless of the angle or offset diameter of the air intake, there is probably a K&N Universal air filter for your equipment. All filters are constructed with ultra-strong molded pliable rubber flanges which absorb vibration and allow for secure attachment and can also be stretched for up to 1/16 of an inch (1.5mm) to fit in-between sizes. K&N universal air filters are washable and reusable.

[More Information on Universal Air Filters]

Product Specifications

Base Outside Length9 in (229 mm)
Base Outside Width5.75 in (146 mm)
Filter MaterialCotton Gauze
Flange Inside Diameter4 in (102 mm)
Flange Length1.5 in (38 mm)
Flange TypeCentered
Height7.5 in (191 mm)
Top Outside Length7 in (178 mm)
Top Outside Width4.5 in (114 mm)
Top StyleMetal
Top MaterialStainless Steel
Air Filter ShapeOval Straight
Package Contents1 Air Filter
Package Quantity1
Product StyleOval Tapered Universal Air Filter
Weight2.8 lb (1.3 kg)
Filter Re-Oiling Amount2.6 oz (77 ml)
Product Box Height9.75 in (248 mm)
Product Box Length9.38 in (238 mm)
Product Box Width9.38 in (238 mm)

K&N RF-1040 Universal Clamp-On Air Filter Product Reviews

Tuesday, December 5, 2017 - Part RF-1040
Perfect fit, fast delivery, very satisfied.

Daniel Topping
Alabaster, Alabama
Monday, August 8, 2016 - Part RF-1040
I bought this filter as back-up for my K&N Air Intake system so I have a clean one ready to put-in. Then I can take my time cleaning the dirty one. Delivery time was a little slow, however it was free, so I can't really complain.

Lawrence Swanberg
Victorville, California
Monday, May 23, 2016 - Part RF-1040
Truck runs like new, more mpg. I am extremely happy.

Isaac Santana
Rialto, California