Need Assistance?
Legendary Service... Ask Your Friends - Since 1969
800.969.7501
Over 160K Powersport Items - In-Stock and ready to ship today! View tires, apparel, helmets, exhaust and more!

UNI Two-Stage Competition Air Filter - NU-4137ST

  • Part #:
    303936
  • Manufacturer Part #:
    NU-4137ST

MSRP Price: $26.95

Our Price: $22.88

You Save:
$4.07 (15%)
3 on Hand

Overview of UNI Two-Stage Competition Air Filter - NU-4137ST

  • Uni-Filters two-stage design provides maximum airflow, superior filtration and increased engine protection
  • Two-stage design allows industrial or farm use ATVs to go longer before service is required, due to the coarse outer layer stopping the larger particles, and the fine pore inner layer giving the ultimate engine protection
  • Uni-Seal filters feature a unique grease groove that allows for an effective application of sealing grease while snugly conforming to the sealing surface of the airbox
  • The choice of top racing teams

Specs for UNI Two-Stage Competition Air Filter - NU-4137ST

Type Air Filter Element
Type Air Filter - OEM Type
Units Each
Weight 0.12 lbs

Cross reference number(s):

NU4137ST

Specs for UNI Two-Stage Competition Air Filter - NU-4137ST

Type Air Filter Element
Type Air Filter - OEM Type
Units Each
Weight 0.12 lbs

Fitment for UNI Two-Stage Competition Air Filter - NU-4137ST

See if this part fits your ride

Part 303936 fits the following machines

Honda
  • 2017 Honda CRF150F
  • 2016 Honda CRF150F
  • 2015 Honda CRF150F
  • 2014 Honda CRF150F
  • 2013 Honda CRF150F
  • 2012 Honda CRF150F
  • 2009 Honda CRF150F
  • 2008 Honda CRF150F
  • 2007 Honda CRF150F
  • 2006 Honda CRF150F
  • 2005 Honda CRF150F
  • 2004 Honda CRF150F
  • 2003 Honda CRF150F
  • 2017 Honda CRF230F
  • 2015 Honda CRF230F
  • 2014 Honda CRF230F
  • 2013 Honda CRF230F
  • 2012 Honda CRF230F
  • 2009 Honda CRF230F
  • 2008 Honda CRF230F
  • 2007 Honda CRF230F
  • 2006 Honda CRF230F
  • 2005 Honda CRF230F
  • 2004 Honda CRF230F
  • 2003 Honda CRF230F
4.8 / 5.0
26 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
22
3
0
1
0
Fit
4.7 / 5
Quality
4.9 / 5
Style
4.9 / 5
Value
4.6 / 5
Fit
4 / 5
Quality
4 / 5
Style
5 / 5
Value
2 / 5
Air Filter
Filter does not come with the oil that you need to make it work correctly. I wish that was in the product overview. That would save you having to make a second purchase and waiting for it to ship. I wish I would have got a K&N filter instead. I know those come pre-oiled. This product will work well I'm sure, just wish it came with the oil you need to use it. Order the oil to if you buy this filter. Hope this helps the next guy.
July 11, 2012
Fit
5 / 5
Quality
5 / 5
Style
5 / 5
Value
5 / 5
UNI Filter
Great product, makes the machine breath easier. Its easy to clean and re-oil. I work in the bush all day and it keeps out all the dust and dirt. All around good OEM replacment.
April 27, 2011
Fit
4 / 5
Quality
5 / 5
Style
5 / 5
Value
5 / 5
A must for any application
Buy this and throw your old filter in the trash. Well worth the money.
October 9, 2009
Fit
5 / 5
Quality
5 / 5
Style
5 / 5
Value
5 / 5
No Review Title Entered By User
No Review Text Entered By User
October 9, 2009
Fit
4 / 5
Quality
5 / 5
Style
4 / 5
Value
5 / 5
My quad can now breath.
This filter does a much better job then the stock plus its reusable. Fits perfect and my quad breaths easier. I would recommend.
October 25, 2012
Fit
5 / 5
Quality
5 / 5
Value
5 / 5
No Review Title Entered By User
Appears to be of good quality. About half the cost of OEM.
February 9, 2010
No Review Title Entered By User
No Review Text Entered By User
May 3, 2016
Fit
5 / 5
Quality
5 / 5
Style
5 / 5
Value
5 / 5
Good Quality
Had to stretch and pull to get my cage to fit into it but once in, it fit good and stug. All the seams held together great during the process
April 12, 2011
Fit
4 / 5
Quality
5 / 5
Style
5 / 5
Value
5 / 5
No Review Title Entered By User
No Review Text Entered By User
September 29, 2009
Fit
5 / 5
Quality
5 / 5
Style
5 / 5
Value
5 / 5
No Review Title Entered By User
No Review Text Entered By User
June 1, 2011
Start typing your question and we'll check if it was already asked and answered. Learn More
No questions have been asked about this item. Be the first!

Instructions and Manuals for UNI Two-Stage Competition Air Filter - NU-4137ST

Owner's Manual Owner's Manual PDF 290.4 KiB

You May Also Be Interested In