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Drainzit Oil Changing Aid - Model# STAN1438 with a 3/8" Drain Port Size

4.5 out of 5 stars 24 customer reviews
| 10 answered questions
Price: $28.22 & FREE Shipping on orders over $49. Details
Only 14 left in stock.
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  • Enter your model number above to make sure this fits.
  • 3/8in. NPT drain port
  • 14in. overall length
  • Quality brass fittings
  • Fits many Briggs & Stratton and Tecumseh engines as well as 16 & 18 HP Kohler engines
  • Custom designed for easy use and installation
3 new from $19.99
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$28.22 & FREE Shipping on orders over $49. Details Only 14 left in stock. Sold by etailz and Fulfilled by Amazon. Gift-wrap available.

Fulfillment by Amazon (FBA) is a service we offer sellers that lets them store their products in Amazon's fulfillment centers, and we directly pack, ship, and provide customer service for these products. Something we hope you'll especially enjoy: FBA items qualify for FREE Shipping and .

If you're a seller, Fulfillment by Amazon can help you increase your sales. We invite you to learn more about Fulfillment by Amazon .

Frequently Bought Together

  • Drainzit Oil Changing Aid - Model# STAN1438 with a 3/8" Drain Port Size
  • +
  • Briggs & Stratton Oil Drain Valve 5401K
  • +
  • Briggs & Stratton 492932S Oil Filter
Total price: $48.52
Buy the selected items together

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Product Information

Product Dimensions 7 x 5.2 x 1.1 inches
Item Weight 7 ounces
Shipping Weight 7 ounces (View shipping rates and policies)
Manufacturer Drainzit
ASIN B000PDN3HY
Customer Reviews
4.5 out of 5 stars 24 customer reviews

4.5 out of 5 stars
Best Sellers Rank #5,299 in Beauty (See Top 100 in Beauty)
#2,226 in Home Improvement > Power & Hand Tools > Power Tools
Date first available at Amazon.com June 11, 2007

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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Customer Reviews

Top Customer Reviews

5.0 out of 5 starsWorks well, but think through your own installation challenges
By The Experimentalist on April 5, 2013
Verified Purchase
This is a very well-made product. I did find the Amazon description to be misleading. It says there is an o-ring where it attaches to the engine. This is not true. You have a simple pipe thread where you attach to the engine. The o-ring is (happily) on the other end where the cap is that you remove to drain the oil. It's a good system with only one compromise: the hose stays full of oil that is not used by the engine and is lost every time you drain the engine. This, I believe, is why manufacturers don't use this approach. The amount of oil lost is probably under an ounce, so it's no big deal.

As you can see from reading other reviews, the real question is whether it is workable in your engine's geometry. Can you attach it? If you can, will the hose be long enough? Will you be able to tuck it out of the way? I have to wonder about people who blame these problems on the product. Try to figure this all out BEFORE you buy.

I used my Drainzit hose to replace one of the little Briggs and Stratton twist-to-seal kits that came on a 15-year-old riding mower. The old kit was leaky after 15 years, and it was always a hassle to deal with, partly because of its poor accessibility. I made up my mind that I was going to replace it if it meant cutting sheet metal to get access. I expected trouble removing the old B&S one and installing this one. I avoided cutting metal by using a stubby wrench (from one of those cheap Harbor Freight sets). I ground down the shoulders on the open end side to allow it to maneuver. (Not sure why a low-leverage wrench designed to get into tight spaces would need wide shoulders anyway.) I wrapped the Drainzit's pipe thread in teflon tape so that I wouldn't need to get it super tight and could ensure a leak-free connection. It worked.Read more ›
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5.0 out of 5 starsDrainzit oil drain valve
By GRB on July 20, 2007
This product is excellent. Makes changing oil a breeze. No more spills or getting burned with hot oil. The rubber collar keeps the valve out of the way until time to change oil. Highly recommended.
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5.0 out of 5 starsGreat Solution for Craftsman 29000/ B&S Motor
By FL DAD on May 15, 2014
Verified Purchase
My mowers oil drain was just a 1/2" above the motor deck and 4 inches away from the nearest edge.(See Pictures) The manufacturer included a drip pan to divert the draining oil into a receptacle of your choosing. Doing it that way spilled oil all over the mower and ground. With the DRAINZIT installed; I can accomplish seasonal oil changes cleanly and easily. Hope that Helps.
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4.0 out of 5 starsThe OEM drain plug was terrible..
By itasor on June 11, 2015
Verified Purchase
I'm using this on a 20HP Kohler 7000 series engine (on my Ariens Zoom 42 zero turn mower). While the Kohler 7000 series isn't specifically listed as compatible on Drainzit's site the engine diagram indicated the existing oil plug was 3/8" NPT and so is this product. The OEM drain plug was terrible...some yellow plastic thing you're supposed to put a clear plastic tube on, then turn it 10-15 times to open the valve and get the oil to flow. It was impossible to get a grip on it and was located in the most difficult place imaginable.

The drain plug threads in the Kohler 7000 are set in, so even with the oil filter off, it's not possible to get a wrench on the Drainzit's fitting to tighten it. I did it with needle nose pliers, but I wasn't happy about not knowing how tight it was.

I removed the Drainzit and got a 1" 3/8 NPT brass pipe nipple and a 3/8" NPT hex-shaped brass coupling from Lowes. I assembled the coupling to the pipe nipple with Permatex thread sealer. The hex-shape of the couple is the key here...you can now get a wrench on that and use it to thread in and tighten the pipe nipple. Then I connected the Drainzit to that and tightened it up. Worked great and is definitely what I should have done in the first place. So don't be afraid of installing a Drainzit if you're drain plug is hard to get a wrench on...just pick up a few brass fittings. Make sure to get a short enough pipe nipple that the Drainzit doesn't end up rubbing on a tire, etc.

With the ease of access to the Drainzit, I was also able to move to a higher capacity Kohler oil filter (since I no longer have to try to get my hand in there to loosen the stock drain plug).
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5.0 out of 5 starsGreat product
By smitty on September 11, 2015
Verified Purchase
If you do your own mower/engine service, BUY THIS NOW.... this is such a great idea and excellent execution.
Makes changing the oil a breeze, no need to jack up the mower and risk spilling oil on the shop floor. Amazing!

Installed this in under 5 minutes on my Briggs & Stratton 13.5 HP INTEK
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5.0 out of 5 starsNice solution
By doc1013 on November 3, 2012
Verified Purchase
I recently ordered this to replace the crappy plastic "auto drain plug" that came on the Briggs and Stratton motor on my JD Z225 mower. This hose looks to be very nice quality on both the fittings, o-ring seal on the cap, and the rubber used for the hose. I had it installed on my motor in no time at all and it seems to seal up well.

Its making draining my oil much easier and it doesn't leak all over the place like the stock drain solution.
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5.0 out of 5 starsWorth every penny
By Jed Jr. on November 13, 2015
Verified Purchase
I have one on my Husqvarna articulated mower and I just put one on my 1990 Deutz Alis garden tractor. If they were $100 each, they would still be worth it. It makes life sooooo much easier when changing the oil.
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4.0 out of 5 starsHappy with product
By Robert J. Pontillo on September 10, 2015
Verified Purchase
Got what I wanted. Well packaged and delivered on time. Haven't installed this one yet but have installed 2 others that are different sizes and they worked well. They other sizes where a 12mm and a 10mm for Honda engines.
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Most Recent Customer Reviews

5.0 out of 5 starsMakes for easy oil changes

Outstanding addition to my generator. Worked as advertised. I added a 3/8" MIP x 3/8" FIP fitting to the engine block and screwed the hose into that fitting and it worked... Read more

Published 4 months ago by Donald E. Schrade
4.0 out of 5 starsGreat idea

Nice item

Published 6 months ago by S. CLOWN
5.0 out of 5 starsInstalled this on a Bobcat 61" mower and it makes ...

Installed this on a Bobcat 61" mower and it makes for much cleaner oil changes. I had to buy a brass adapter from another supplier to make it work on the 25 HP Kawasaki engine. Read more

Published 7 months ago by Mike N.
5.0 out of 5 starsAs advertised, works just fine

Works just fine.

Published 8 months ago by JMD
4.0 out of 5 starsWorks great with craftsman r1000 riding lawn mower

Unlike the terrible experience I had changing the oil in My riding lawnmower, this installed easily. At least the next time I change the oil it will be a much better experience.

Published 11 months ago by Jeff Klein
1.0 out of 5 starsReturned didn't fit.

Returned didn't fit.

Published 12 months ago by Do it yourself
5.0 out of 5 starsFive Stars

Makes oil changes mess free, works with no leaks

Published 12 months ago by Rdshark100
5.0 out of 5 starsPerfect solution

Works as advertised. I'm very pleased with the build quality.

Published 12 months ago by Mad_Monk
5.0 out of 5 starsGreat idea, too bad they don't just put these ...

Great idea, too bad they don't just put these on every small engine, so I don't have to drain oil on to frame.

Published 19 months ago by David Ashton

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