K&N Oil Filter KN-138
  • K&N Oil Filter KN-138 - Black
  • K&N Oil Filter KN-138 - Chrome

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Video Reviews (2)

K&N Oil Filter KN-138 Videos

K&N Oil Filters

K&N Oil Filters are designed to satisfy the needs of racers and engine builders as well as the average motorcycle or ATV owner who wants the best oil filter available. K&N Oil Filters feature synthetic medias that trap 99% of harmful contaminants without compromising oil flow rates.

The K&N 'wrench off’ oil filters feature a 17mm nut affixed onto the end that allows for easy installation and removal. The 17mm nut is cross-drilled making it super easy to throw on a safety wire. Its heavy duty canister and base plate protect against punctures while the double-rolled seal and pre-lube gasket ensure a secure seal.


  • Compatible with conventional, synthetic blend and full synthetic oils
  • High-flow rate synthetic media filter
  • Traps 99% of harmful contaminants
  • Pressure relief valve and anti-drain back valve (where applicable)
4.8 / 5
Bang For The Buck
5 / 5
Ease Of Install
5 / 5
5 / 5
This Product Fits:
RSV 1000 R 2010
RSV 1000 R Factory 2010
RSV4 2009, 2010, 2011, 2012
RSV4 FACTORY APRC 2011, 2012
RSV4 R 2010, 2011, 2012
RSV4 RF 2015, 2016
RSV4 RR 2015, 2016
Tuono V4 1100 Factory 2015, 2016
Tuono V4 1100 RR 2015, 2016
Tuono V4 R 2011, 2012, 2013
KLV1000 2004, 2005, 2006
AN650 Burgman 20022016
C109R Boulevard 2008, 2009, 2010
C109RT Boulevard 2008, 2009
C50 Boulevard 20052013, 2015
C50 Boulevard SE 2009, 2010, 2011, 2012
C50T Boulevard 20052015
C90 Boulevard 2005, 2006, 2007, 2008, 2009
C90T Boulevard 2005, 2006, 2007, 2008, 2009
GSF1200S Bandit 19962006
GSF1250S Bandit 20072012
GSF1250S Bandit ABS 20072012
GSF600S Bandit 19952004
GSF650S Bandit 2005, 2006, 2007, 2008, 2009
GSR600 K6 2006, 2007, 2008, 2009, 2010
GSX1100F Katana 19871994
GSX1100G 1991, 1992, 1993
GSX1250FA 2011
GSX1300BK B-King 2008, 2009, 2010, 2011, 2012
GSX1300R Hayabusa 19992015
GSX1400 20012007
GSX600F Katana 19882006
GSX650F 20082013
GSX750F Katana 19892006
GSX-R1000 20012015
GSX-R1100 19861998
GSX-R600 19922015
GSX-R750 19882015
GV1400 Cavalcade 1987, 1988, 1989
GW250 2013, 2014, 2015
GW250F 2015
M109R2 Boulevard 2008, 2009
M109R Boulevard 20062014
M109R Boulevard Limited Edition 20072012
M50 Boulevard 20052011, 2015
M50 Boulevard Limited 2007
M50 Boulevard SE 2009
M90 Boulevard 2009
RF900 1998, 1999, 2000
S50 Boulevard 2005, 2006, 2007, 2008, 2009
S83 Boulevard 2005, 2006, 2007, 2008
SFV650 Gladius 20092015
SV1000 2003, 2004, 2005, 2006, 2007
SV1000S 2003, 2004, 2005, 2006, 2007
SV650 19992009
SV650 ABS 19992009
SV650S 19992009
SV650S ABS 19992009
TL1000R 19982003
TL1000S 1997, 1998, 1999, 2000, 2001
VL1500 Intruder 19982004
VL800 Intruder Volusia 2001, 2002, 2003, 2004
VL Intruder C800 20062012
VS1400GL Intruder 19872004
VS700 Intruder 1987, 1988
VS750GL Intruder 1988, 1989, 1990, 1991
VS800GL Intruder 19922005
V-Strom 1000 20022015
V-Strom 650 20042015
V-Strom 650XT 2015, 2016
VX800 19901997
VZ800 Marauder 19982005
VZ Intruder M800 20052011
Product Style RevZilla Item # Manufacturer Product # Availability
Black 857953 KN-138 In Stock: Ships within 24 hours
Chrome 857689 KN-138C In Stock: Ships within 24 hours


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Write a Product Review for a chance to win our monthly $100 giveaways.
5.0 / 5.0
19 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Bang For The Buck
4.8 / 5
5.0 / 5
5.0 / 5
Ease Of Install
5.0 / 5
Fit & Finish
5.0 / 5
5.0 / 5
Bang For The Buck
5 / 5
Great Filter
Been using K&N for the last few years, never had a problem. Easy to install and the price is good.
April 11, 2014
2008 Suzuki GSX-R600
Bang For The Buck
4 / 5
Great product
Fast delivery and good product. Will order more from this company.
July 13, 2015
Bang For The Buck
5 / 5
makes oil changes a breeze!
I have used K&N oil filters for years and with their welded on nut it makes changing your filter a breeze.
More and more motorcycles are coming with the filter buried in a recess making changing the stock filter problematic.
A bonus is it takes the same size socket as my drain plug for my bike!
November 11, 2013
2011 Triumph Tiger
Bang For The Buck
4 / 5
it's an oil filter
and it fits on my bike. boy is it great. and how useful is it that this thing keeps oil clean no matter how dirty the outside can be...
September 29, 2014
2006 Suzuki SV650
Bang For The Buck
5 / 5
K&N filter
You'll never go wrong with K&N filters. They're always brilliant, well made, and won't let you down. The wrench point on top is helpful feature too.
February 2, 2015
2004 Suzuki SV650
Bang For The Buck
5 / 5
Easy Install
Replaced oem filter with this filter om my 650 vstrom. Fit was great. Nice having a filter that has nut on outside for easy off/on installation.
June 2, 2014
2009 Kawasaki KLR650
Best Motorcycle Oil Filter available
You get what you pay for, and considering your oil protects and lubes your engine and transmission, spend a few dollars more and buy this filter.
March 23, 2016
2007 Suzuki SV650S
Bang For The Buck
5 / 5
Good price, fits, and it even filters the oil!
No complaints, fit my 2012 DL650 perfectly. Would buy again.
May 17, 2016
1 year ago
2012 Suzuki V-Strom DL650
Easy off..
Worth the extra bit of cost because the supplied nut on the front makes removal easy.....the nut is also drilled for safety wire.
June 14, 2016
1 year ago
2002 Suzuki GSX-R600
Bang For The Buck
5 / 5
5 / 5
5 / 5
Ease Of Install
5 / 5
Fit & Finish
5 / 5
5 / 5
Best buy for filters
I had never bought and installed such an easy filter in my life, this was super simple to install and it looks much better.
May 19, 2017
3 months ago
Use our Product Q&A for a chance to win our monthly $100 giveaways.

Have a functionality, fit, or otherwise product-specific question about the K&N Oil Filter KN-138? Ask it here! If you have a customer service or shipping question, please direct it to our Customer Service department.

Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 18 questions Browse 18 questions and 66 answers
Why did you choose this?
RevZilla Store
These filters are awesome and affordable!
Osito on Jul 19, 2017
past usage and easy install
Jeffrey S on Jun 24, 2017
These filters are awesome and affordable!
Osito on Jul 19, 2017
Superior product at a good price
A L on Jul 9, 2017
past usage and easy install
Jeffrey S on Jun 24, 2017
Chalako C on Jun 18, 2017
trusted your opinion off your video
Benito S on May 3, 2017
michael c on Apr 10, 2017
K&N is the best and this one fits my bike.
Jason F on Mar 29, 2017
Great oil filter, Nut on the bottom for loosening is awesome.
blazindominican on Mar 19, 2017
pre-drilled for safety-wire. good reputation.
Aaron B on Mar 19, 2017
always need to change the oil AND filter
Thomas M on Dec 13, 2016
Good quality filter.
ROBERT A on Nov 2, 2016
I've purchased them before and they are easy to remove and install.
Charles B on Sep 18, 2016
A bit more expensive than others but resistant to light impacts like debris or small rocks
Jorge Q on Aug 12, 2016
The built in nut makes for easy install and removal
DGrav on Aug 11, 2016
Wrench off option
vilmos2k on Jul 17, 2016
Easy to install
Burak E on Jul 1, 2016
Like K&N air filter
Gary G W on May 17, 2016
Trusted brand I've used to change my oil for 5+ years. Nut on the front helps with quickly getting through the change!
Robert P on May 15, 2016
Recommended for my bike specifically
Kevin S on May 11, 2016
Good Reviews, fits my bike.
Frederick A S on Apr 28, 2016
K&N is a trusted brand. Have always and will always use it when possible.
Andrew G on Mar 18, 2016
It fit my bike
JOSEPH on Mar 15, 2016
K&N is a trusted brand and I fail at using oil filter wrenches to the nut style is very nice.
Nate O on Jan 22, 2016
it was the only one u sold for my bike
R D on Dec 23, 2015
gotta keep it clean
robert l on Oct 18, 2015
Needs an oil change ;)
Kyle M on Sep 21, 2015
I've learned you don't want to skimp on oil changes or oil filters. K&N is a brand I've trusted for thirty years. It's the only aftermarket brand I'd trust on my Ducati. Plus the bolt head on the shell makes it even easier to spin off and on.
Handyman Carl on Jun 13, 2015
The best Oil filter I could find.
Auston J on May 21, 2015
Love K&N and need to learn how to change my oil.
John J on Apr 27, 2015
Watched the video on Revzilla. Convinced me to buy.
Jesse K on Apr 7, 2015
K&N Oil Filters are some of the best filters money can purchase. They are also easier to remove due to the nut on the bottom. I have used K&N since 2009 and have never regretted it.
Phillip T on Feb 13, 2015
it fit my bike
Adam F on Feb 12, 2015
After watching the video provided by revzilla on the product I was convinced that the product was worth the little extra money it costed versus more common filters.
Mark F on Feb 5, 2015
Because it's a K&N. What else can I say.
Steve S on Jan 12, 2015
I needed a new oil filter, and the hex nut for tightening and removing the filter is really useful.
Stephen S on Jan 1, 2015
Easy off easy on. K & N quality and black to boot. Easy choice.
Gerral S on Oct 13, 2014
very good
kittisak r on Sep 16, 2014
I got this cause it filters oil well. It's a K&N can!
Dean U on Jul 17, 2014
The bolt head on the end makes it so much easier to change the filter. Worth the extra money to not have to fight with a stuck filter.
John R on Apr 7, 2014
Works well, easy to change
Edmund C on Mar 19, 2014
exelent quilality with supper price & fast response coustomer service.. thanks
mahmood a on Mar 12, 2014
Reputation as per word of mouth.
Chris W on Mar 6, 2014
Nut on the end.Plus K&N performance.
Dan H on Jan 13, 2014
need a oil change
Thornton B on Nov 25, 2013
Good product at a good price...and it is time for a oil change:P
Duncan T on Oct 22, 2013
Superior product at a good price
A L on Jul 9, 2017
Chalako C on Jun 18, 2017
Does k&N have a special filter for synthetic oil ?
A shopper on Mar 21, 2016
BEST ANSWER: I don't think so - the filter is going to filter no matter what kind of oil you put in your bike.