Review:  9-1-2020



Precision Machined in America - Ohio, USA

Logo Guardian Oil Protector for Harley-DavidsonsLogo Guardian Oil Protector for Harley-Davidsons

Locking Oil Caps for HARLEY-DAVIDSON Motorcycles

        Precision Products of K&B Enterprizes, LLC

Sample, chrome locking oil cap

fellow riders!

Accessories precision manufactured to fit HARLEY-DAVIDSON Motorcycles for increased security

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GUARDIAN Oil Protector™
locking oil caps can prevent these and other items from entering your engine through the oil cap:

screws clog oilCigarette butts clog oil 

  • Sand

  • Cigarette butts

  • Wood screws

  • Gravel, rocks

  • Small nails

  • Wood chips

  • Corrosive liquids

  • Honey

  • Paper Items

  • Other items

  These items - and others that are simply hard to believe - have been found in engines upon tear-down as engine rebuilding was necessary. 


  • Aircraft Quality Aluminum

  • Completely WATERPROOF

  • CNC Precision Machined

  • Choose Black Anodized or Chrome

  • 2 numbered keys included

  • MOST ARE READY TO USE OUT OF THE BOX - only 2 models require using your existing oil stick - the ONLY tool you need to install is needle-nosed pliers

  • Low cost and cost effective


  • Protect your bike engine and your investment

  • Eliminate the threat of someone messing with you by sabotaging your oil

  • What is the cost to rebuild an engine damaged by foreign objects entering through an unprotected oil cap? Stock engine or after-market parts? $6,000. and up is the figure we have, but it depends upon how much damage.


   Harley Davidson locking oil caps Made in USA symbolClick these links below for info that appears on this page...

   About Us  - Story & Video - How Guardian Locking Oil Caps Came to Be


   Resources & K&B Flyer   


   About Us


Kurt Fogle, Developer of the

Guardian Oil Protector TM - Locking Oil Cap -  Harley Davidson Accessories
Precision Machined Locking Oil Caps for Harley-Davidson Motorcycles - PATENTED, U.S. Patent Office - Aircraft quality aluminum, available in chrome, black anodized, aluminum, depending upon model.

   How did you come up with this idea of a locking oil cap?


  A good while ago now, my wife and I took off on a road trip, riding hundreds of miles. We stopped in a small town and pulled up to a restaurant to get a bite to eat. In front a number of Harley's were parked and, always friendly, we stopped and talked a bit with several of the other bikers before going inside. I'm sure it was obvious that we weren't from around these parts, and I probably said we were from Cleveland. I don't really remember what was said - just small talk, and friendly, though. Regardless, I locked up my bike as I always do, a Harley 2003 FL Electra Glide Centennial Edition that I've put a lot into, and we went inside to eat.
      Leaving the restaurant I nodded to those I'd talked with, and we headed off down the road. After riding a short while I felt that something wasn't quite right with the engine. It was acting funny, starting to sound funny, and it felt like it was heating up, running hot. I started to pull over to check it, and just then it made a lot of noise and completely froze up. It was dead.
     Much later, back in Cleveland and getting the engine torn down, what was found was a filtered cigarette butt in the engine. The oil pump was fouled and ruined, starving my engine for oil, the reason the engine locked up. That was the cause and I didn't know it until tear down. The only time this could have happened was when we were in the restaurant - someone maliciously put a cigarette butt in my oil. They simply popped the cap and dropped it in. One butt - that's all it took.  
       There was a lot of damage. I was heart broken, and then I was angry. It cost me a lot, but aside from the money it cost me prime riding time, as well - it took a over a month to fix the engine and more to replace some special aftermarket engine parts I'd put on, as it is far from a stock engine. 
     I searched high and low for a locking oil cap, and none existed anywhere. I swore I'd not leave my bike and oil cap unprotected again. I couldn't find anything. As I searched I talked to a lot of people; other riders, Harley dealers, and others. I found I wasn't alone in having garbage put into the oil - cigarette butts, screws, dirt, gravel, etc. If I couldn't buy a locking oil cap, I decided I'd make one - and also make quality locking caps available to fellow riders. The only parts that go on my bike have to be very high quality. That was the original idea, and K&B Enterprizes, LLC, was formed. Now all of our efforts are focused on keeping up with demand for the
GUARDIAN Oil Protector. Anyway, that's the story. (Video right below)

- - Kurt Fogle, President, K&B Enterprizes, LLC                       
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VIDEO:  How Guardian Locking Oil Caps Came to Be...


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To contact us, please go to CONTACTS

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Flyer:  Flyer to describe the caps, security, oil flow. Click icon:  PDF Guardian Oil Locks
PDF file should download or open in a new browser window.


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Review:  9-1-2020

Anodized Black Harley-Davidson locking oil cap

Logo Guardian Oil Protector for Harley-DavidsonsLogo Guardian Oil Protector for Harley-Davidsons

Locking Oil Caps for HARLEY-DAVIDSON Motorcycles
U.S. Manufactured

        Precision Products of K&B Enterprizes, LLC

 CLICK here for:

Painesville, Ohio ● USA



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