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Secure Cap -- Locking oil filler cap

Lock it, Leave it, Dont worry about it


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Secure Cap locking systems are designed for all Harley-Davidson Softail motorcycles manufactured after 2000, including Deuce, Fat Boy and Heritage models. Secure Cap is available in black, chrome and pink finishes.
Vandalism and oil contamination are problems that every motorcyclist faces. Now, there's a proven, cost-effective solution for deterring vandals and keeping oil free from damaging contaminants. Secure Cap is an industry leader specializing in locking oil caps designed especially for Harley-Davidson motorcycles. Until now, unlocked oil fill covers have been one of the few unprotected areas vulnerable to vandalism. Oil contaminants can permanently damage the engine. This elegant solution ensures that Harley enthusiasts are protected wherever they ride.

Parking at a music festival, on the street or at a local restaurant is now worry-free, even in the summer months when theft and vandalism are most common. Each Secure Cap has the same features as the original equipment manufacturer oil fill cap with the added protection of a durable stainless steel lock. Secure Cap locking systems are designed for all Harley-Davidson Softail motorcycles manufactured after 2000, including Deuce, Fat Boy and Heritage models. Secure Cap is available in black, chrome and pink finishes. Charitable donations for 2014 apply to sales of pink caps only.
The locking system includes a premium dipstick, discreet swiveling cover and premium fluorocarbon O-rings. Fluorocarbons resist oil additives and will never get gummy or lose their sealing power. Locking Oil Caps prevent vandals from stealing the cover, draining the oil pan or introducing potentially damaging contaminants, such as sand, gravel, sugars and syrups. Because each cap has a hidden lock and discreet rotating cover, Secure Cap is an effective vandal deterrent.

Harley-Davidson motorcycles are among the most popular bikes on the road. They're also among the most stolen and most vandalized. "The Harley Davidson high vandal rate is well-established, and oil contamination can happen to anyone. Each year, 240,000 new Harleys hit the asphalt. Surprisingly, locking oil caps are not standard." Said Keith Andrews, Owner of Due to their high value, most riders purchase collision and comprehensive insurance. While comprehensive coverage does protect against vandalism-related engine damage, insurance premiums are expensive, and deductibles are high.
Some contaminants mix with oil when the engine is hot, but after it cools down, the contaminants separate, clog the engine and have the potential to damage the transmission and other components. With continued use, blowouts and oil loss are common. In addition to peace of mind, locking oil caps help riders avoid out-of-pocket expenses and costly claims that increase insurance premiums. The cost of a Secure Cap locking system is far less than insurance deductibles and provides peace of mind wherever travels take the rider.
Secure Caps are easy to install and work by replacing the dipstick and cap that comes with the bike. Each cap features a locking mechanism that keeps the oil tank safe from vandalism and contamination.
Secure Cap is a California-based company dedicated to providing locking oil caps for Harley Davidson bikes and FLH touring models. The company sells products directly to customers online through and offers wholesale distribution to qualified dealers.

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Reader Comments

I see you have an article on the secure cap/locking oil tank cap and offer it for $75. how do I buy it thru you, I tried clicking on the picture, it didn't take me anywhere. thanks.

Rochester, WA
Saturday, December 15, 2018
Editor Response You're right. Here's the contact info:
SecureCaps Engineering


1411 N. Batavia st. unit 117

Orange, Calif 92867

I would like to purchase one of these black oil secure caps, but i have two questions :
1) do they fit on my new FAT BOY 114, 2018 ?
2) where can i purchase this ?

Thanks a lot for your answer.

Vence, Côte d'Azur, France
Sunday, July 29, 2018
Editor Response I reached out to the company. Hope they respond.
Wanted a locking engine oil cap for ROYAL ENFIELD THUNDERBIRD 350 in India. Any suggestions

Amanda kumar
Hyderabad, Telangana, India
Monday, February 20, 2017
Editor Response Try dropping a note to: I'm sure Keith can help you. Did you know more Royal Enfields are sold in the world than Harleys?
I like the locking oil cap design how can I order one for a 2002 flhtcui.

James leal
Austin , TX
Monday, March 31, 2014
Editor Response this is Lorne with Its Nice to know that you like our products. We just received our softails in black today and they are extremely nice.
we have the Flh version coming out of the mold process as we speak, we are about 21 days away from assemble and package.

James you can go to our website and place a pre order to ensure your purchase of one or you can input your information to us on the website and you will be notified when they are ready to be packaged for deliveries.

Hope all is well for you in Texas

thank you

Sales Manager Lorne
Secure Cap LLC

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