Visit HarborFreight.com

GET NEW COUPONS

Coupons for

Compare our price of $79.99 to OTC at $106.19 (model number: 5609). Save $26.20 by shopping at Harbor Freight.

Shop Now for Item 64918

MADDOX Cylinder Leak-Down Tester - Item 64918

Shop by Department

Automotive

Generators & Engines

Tool Storage

Welding

Power Tools

Compressors

Hand Tools

Lawn & Garden

Lighting

Safety

Electrical

Material Handling

Plumbing

Painting

Construction

Hardware

Home & Security

New Tools

Your Privacy

When you visit our website, we store cookies on your browser to collect information. The information collected might relate to you, your preferences or your device, and is mostly used to make the site work as you expect it to and to provide a more personalized web experience. However, you can choose not to allow certain types of cookies, but if you do so, it may negatively impact your experience of the site and the services we are able to offer, and you may not be able to fully use certain portions of the site. Click on the different category headings to find out more and change your default settings according to your preference. You cannot opt-out of our Strictly Necessary Cookies as they are deployed in order to ensure the proper functioning of our website (such as prompting the cookie banner and remembering your settings, to log into your account, to redirect you when you log out, etc.). Security & Privacy

Necessary

Always Enabled

These cookies are necessary for the website to function and cannot be switched off in our systems. They are usually only set in response to actions made by you which amount to a request for services, such as setting your privacy preferences, logging in or filling in forms. You can set your browser to block or alert you about these cookies, but if you do so, some parts of the site will not work. These cookies do not store any personally identifiable information.

Cookie	Duration	Description
ARRAffinity	session	This cookie is set by websites that run on Windows Azure cloud platform. The cookie is used to affinitize a client to an instance of an Azure Web App.
cookielawinfo-checbox-analytics	11 months	This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Analytics".
cookielawinfo-checbox-functional	11 months	The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional".
cookielawinfo-checbox-others	11 months	This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other.
cookielawinfo-checkbox-advertisement	1 year	The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Advertisement".
cookielawinfo-checkbox-necessary	11 months	This cookie is set by GDPR Cookie Consent plugin. The cookies is used to store the user consent for the cookies in the category "Necessary".
cookielawinfo-checkbox-performance	11 months	This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Performance".
JSESSIONID	session	Used by sites written in JSP. General purpose platform session cookies that are used to maintain users' state across page requests.
viewed_cookie_policy	11 months	The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. It does not store any personal data.

Functional

Performance

These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. They help us to know which pages are the most and least popular and see how visitors move around the site. They also help us identify sections of the site that can be optimized for the best browsing experience. All information these cookies collect is aggregated and therefore anonymous. If you do not allow these cookies, we will not know when you have visited our site, and will not be able to provide you the best experience possible.

Cookie	Duration	Description
__utma	2 years	This cookie is set by Google Analytics and is used to distinguish users and sessions. The cookie is created when the JavaScript library executes and there are no existing __utma cookies. The cookie is updated every time data is sent to Google Analytics.
__utmb	30 minutes	The cookie is set by Google Analytics. The cookie is used to determine new sessions/visits. The cookie is created when the JavaScript library executes and there are no existing __utma cookies. The cookie is updated every time data is sent to Google Analytics.
__utmc	session	The cookie is set by Google Analytics and is deleted when the user closes the browser. The cookie is not used by ga.js. The cookie is used to enable interoperability with urchin.js which is an older version of Google analytics and used in conjunction with the __utmb cookie to determine new sessions/visits.
__utmt	10 minutes	The cookie is set by Google Analytics and is used to throttle request rate.
__utmz	6 months	This cookie is set by Google analytics and is used to store the traffic source or campaign through which the visitor reached your site.

Analytics

Analytical cookies are used to understand how visitors interact with the website. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc.

Cookie	Duration	Description
CONSENT	16 years 4 months 21 days 4 hours	These cookies are set via embedded youtube-videos. They register anonymous statistical data on for example how many times the video is displayed and what settings are used for playback.No sensitive data is collected unless you log in to your google account, in that case your choices are linked with your account, for example if you click “like” on a video.
_ga	1 year	This cookie is installed by Google Analytics. The cookie is used to calculate visitor, session, campaign data and keep track of site usage for the site's analytics report. The cookies store information anonymously and assign a randomly generated number to identify unique visitors.
_gcl_au	3 months	This cookie is used by Google Analytics to understand user interaction with the website.

Others

Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet.

Cookie	Duration	Description
-test-amp-cookie-tmp	past	No description available.
AMP-CONSENT	1 year	No description available.
ARRAffinitySameSite	session	No description available.

Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. These cookies track visitors across websites and collect information to provide customized ads.

Cookie	Duration	Description
IDE	1 year 24 days	Used by Google DoubleClick and stores information about how the user uses the website and any other advertisement before visiting the website. This is used to present users with ads that are relevant to them according to the user profile.
test_cookie	15 minutes	This cookie is set by doubleclick.net. The purpose of the cookie is to determine if the user's browser supports cookies.
VISITOR_INFO1_LIVE	5 months 27 days	This cookie is set by Youtube. Used to track the information of the embedded YouTube videos on a website.
YSC	session	This cookies is set by Youtube and is used to track the views of embedded videos.
yt-remote-connected-devices	never	These cookies are set via embedded youtube-videos.
yt-remote-device-id	never	These cookies are set via embedded youtube-videos.