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Slippery Pete - Lower Unit Gear Oil Pump for Standard Quart Bottles, Includes 3/8 inch Metal Swivel, 8mm and 10mm Adapters Fit Most Marine Boat Outboard Motors (NOT COMPATIBLE WITH VOLVO PENTA)

4.7 4.7 out of 5 stars 5,297 ratings
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Purchase options and add-ons

Brand Slippery Pete
Color Chrome Metal Swivel Adapter
Material Aluminum, Alloy Steel
Mounting Type Suction Mount

About this item

  • 🚤 PUMPS 8CC PER PUMP STROKE (Includes Metal 3/8" Adapter Connected To Clear Plastic Tubing)
  • 🚤 THIS GEAR OIL CHANGE KIT includes 3 adapter sizes. 3/8"(Swivel, Metal), 8mm and 10mm (Metal). Take the guess work out of figuring out the size of your Lower Unit's gear oil drain plug. (WON'T FIT VOLVO PENTA)
  • 🚤 2 Rigid Suction Tubes REACHES TO BOTTOM OF TALL AND SHORT GEAR OIL BOTTLES
  • 🚤Easy To Follow Instructions On Back Of Header Card
  • 🚤 Re-closeable Poly Bag for Storage
› See more product details

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Slippery Pete - Lower Unit Gear Oil Pump for Standard Quart Bottles, Includes 3/8 inch Metal Swivel, 8mm and 10mm Adapters Fi
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Quicksilver by Mercury Marine 858064Q01 SAE 90 High Performance Gear Lube, 32 oz.
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Product Description

fluid pump
Lower Unit Gear Oil Pump Kit

gear pump

gear pump

gear pump

Pumps 8cc Per Stroke

This 8cc pump can empty an entire quart in five minutes or less.

Fits All Major Outboard Brands

3 sizes of aluminum adapters. Fits Mercury, Suzuki, Yamaha, Johnson, Mercruiser, Nissan, Tohatsu, Honda and Evinrude and more!

Convenient Swivel Adapter

Swivel adapter makes it easy to connect to the lower unit fill hole without spinning the entire pump.

lower unit gear oil pump adapter

Easily Fill Your Outboard's Lower Unit Gear Oil with Slippery Pete's Lower Unit Gear Oil Pump with 3/8" Swivel Steel, 8mm & 10mm Aluminum Adapters

Lower Unit Gear Oil Pump Kit

A TOOL EVERY DIY MECHANIC MUST HAVE!

Changing your lower unit gear oil can be a simple job if you have the right kit, and Slippery Pete's Lower Unit Gear Oil Pump is definitely the right one!

For starters, this kit comes with 3 different adapters:

  1. 3/8"-16 Swivel Steel Adapter
  2. 8mm-1.25 Male x 3/8"-16 Female Adapter
  3. 10mm-1.25 Male x 3/8"-16 Female Adapter

With these 3 adapters, this kit will fit MOST outboard lower unit drain holes. For American made outboards, you'll probably only need to use the 3/8" Swivel Adapter, since most American brands have a 3/8" lower unit drain hole. This swivel steel adapter is much more convenient than the plastic ones (shown in one of the above pictures), because you do not need to turn the entire pump as you're screwing the adapter into the drain hole. And since it is made of steel, you do not have to worry about stripping the threads (which often happens when screwing a plastic adapter into steel threads).

However, for most foreign made outboards, you'll probably need to use one of the 2 metric adapter WITH the 3/8" Swivel Adapter, as demonstrated in the picture above. (NONE OF THE ADAPTERS IN THIS KIT WILL FIT VOLVO PENTA)

The 8cc pump itself comes with a long and a short suction tube so that it will reach the bottom of your quart bottle (depending on the height of the quart bottle). NOTE: THE PUMP'S CAP ADAPTER WILL ONLY FIT STANDARD QUART BOTTLES WITH A 28mm (1.125") OPENING!

5cc Fluid and Oil Pump for Standard Quart Bottles 30cc Fluid and Oil Pump for Gallon Bottles and Wide Mouth Quart Bottles 8cc Fluid and Oil Pump for Standard Quart Bottles with 3rd Hand Adapter Lower Unit Gear Oil Pump for Quart Bottles with 3/8" Swivel, 8mm & 10mm Adapters
5cc Fluid & Oil Pump for Standard Quart Bottles 30cc Fluid & Oil Pump for Gallon Bottles & Wide Mouth Quart Bottles 8cc Fluid & Oil Pump for Standard Quart Bottles with 3rd hand Adapter Lower Unit Gear Oil Pump for Quart Bottles with 3/8" Swivel, 8mm & 10mm Adapters
Customer Reviews
4.6 out of 5 stars
8,783
4.6 out of 5 stars
5,089
4.6 out of 5 stars
2,948
4.7 out of 5 stars
5,297
Price $11.49 $16.99 $13.99 $17.99
1 Pump Stroke Volume 5cc 30cc 8cc 8cc
Bottle Size Adaptability Standard Quart Bottles with 28mm Opening Gallon Bottles with 38mm, 40mm, 43mm, 50mm Opening & Wide Mouth Quart Bottles Standard Quart Bottles with 28mm Opening Standard Quart Bottles with 28mm Opening
Suction Tubes Length 7", 5.5" 7.25", 4.5", 3" 6.125", 4.75" 6.125", 4.75"
Clear Flexible Fill Hose Length 18.5" 26" 19.5" 19.5"
Fill Adapter None 3rd Hand Adapter 3rd Hand Adapter 3/8" Swivel Steel, 8mm & 10mm Aluminum Adapters
Fits Wide Mouth Quart Bottles NO YES NO NO
MAXIMUM Oil Viscosity 80W-90 80W-90 80W-90 SAE 90

Product information

Technical Details

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Warranty & Support

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

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Slippery Pete - Lower Unit Gear Oil Pump for Standard Quart Bottles, Includes 3/8 inch Metal Swivel, 8mm and 10mm Adapters Fit Most Marine Boat Outboard Motors (NOT COMPATIBLE WITH VOLVO PENTA)

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What's in the box

  • 8cc Fluid Pump with Fill Tube
  • 3/8 inch Swivel Adapter
  • 8mm Adapter
  • 10mm Adapter

    • Looking for specific info?

    Customer reviews

    4.7 out of 5 stars
    4.7 out of 5
    5,297 global ratings

    Customers say

    Customers like the connector, saying it comes with different size adapters. They also appreciate the value for money, saying the product is decent for the money. Customers say it makes gear oil changes easier and cleaner. They like that it fits perfectly. Customers also appreciate speed, ease of use, and performance. However, some customers differ on sturdiness.

    AI-generated from the text of customer reviews

    240 customers mention232 positive8 negative

    Customers are satisfied with the performance of the outboard motor. They mention that it works well on outboard gearcases and that it has an excellent connector design.

    "...It worked perfectly and flawlessly. Would absolutely recommend and comes with plenty of different adapters depending on your situation...." Read more

    "Works well as designed" Read more

    "Yes this for regular size quart of oil, did a fine job!" Read more

    "Worked out very nicely for filling lower unit" Read more

    107 customers mention107 positive0 negative

    Customers find the outboard motor easy to use. They mention it's easy to install, connect, and fill. They appreciate the excellent connector design that makes the job clean and simple. Customers also mention that the pump can easily be operated with an index finger.

    "Very easy to use. Arrived early" Read more

    "...The pump can easily be operated with an index finger and out of position when pumping transmission fluid... get in as much as you think you need,..." Read more

    "Easy to use. Comes with adapters" Read more

    "...This year I didn’t have oil anywhere when the job was done. Quick, easy and clean." Read more

    94 customers mention91 positive3 negative

    Customers are satisfied with the speed of the outboard motor. They mention that it works better and faster than other similar pumps. Some say that it completes the job without a single spill. Overall, most are happy with the performance of this pump.

    "Worked as expected and had correct fitting for my boat motor" Read more

    "Arrived very quickly! And as expected. 😃..." Read more

    "This part was perfect for my needs. It was exactly as stated and worked great! I received it fast as well." Read more

    "...This year I didn’t have oil anywhere when the job was done. Quick, easy and clean." Read more

    82 customers mention82 positive0 negative

    Customers find the outboard motor decent for the money, works well, and is easy to use. They also appreciate the included adapter, which saves them lots of hustle while changing manual transmission.

    "This pump served it's purpose and is a good value, but I felt that the operation felt questionable and might break quickly. It did not." Read more

    "Makes gear oil changes so much easier and cleaner, worth every penny...." Read more

    "Good product and price" Read more

    "...It screws right on the gear oil bottle making it easy to use. Good value!" Read more

    61 customers mention45 positive16 negative

    Customers like the fit of the outboard motor. They mention that it fits perfectly, comes with different size fittings, and works as expected. Some appreciate the option of using different size pick up tubes for different container sizes.

    "Worked as expected and had correct fitting for my boat motor" Read more

    "Well built, good fit, pumps quickly...." Read more

    "...the need to remove a whole lot of iron is challenging as the spaces are very tight...." Read more

    "...FITS RIGHT IN THE DIPSTICK!" Read more

    49 customers mention41 positive8 negative

    Customers like the oil change. They mention it makes gear oil changes so much easier and cleaner. Some say it works great for changing the oil in an outboard lower unit. They also say it's easy to fill the transmission with oil in a super tight space.

    "Makes gear oil changes so much easier and cleaner, worth every penny...." Read more

    "Worked perfectly for putting gear oil in the lower unit of my Yamaha 150." Read more

    "Have not used it yet but seems to be well-made and functional for adding gear oil to an outboard" Read more

    "...tube, allowed me to fit into these tight spaces and rather easily replace that oil. This hand held pump is very useful!" Read more

    42 customers mention36 positive6 negative

    Customers like the connector. They say it comes with plenty of different adapters depending on your situation. They also appreciate the multiple attachments to fit your drain plugs. Overall, most are happy with the product and recommend it.

    "...Would absolutely recommend and comes with plenty of different adapters depending on your situation...." Read more

    "Everything worked as advertised. The kit included multiple fittings." Read more

    "Easy to use. Comes with adapters" Read more

    "Improved adapters compared to the competition." Read more

    59 customers mention33 positive26 negative

    Customers are mixed about the sturdiness of the outboard motor. Some mention that it's well made and durable, while others say that it will not hold up if used for more than a few times. Some say that the hose popped off the pump side and that the pump part came out of the housing.

    "Have not used it yet but seems to be well-made and functional for adding gear oil to an outboard" Read more

    "...good value, but I felt that the operation felt questionable and might break quickly. It did not." Read more

    "Well built, good fit, pumps quickly...." Read more

    "...The pump works it just seems a bit flimsy." Read more

    Slippery Pete Oil Pump Works Well
    4 Stars
    Slippery Pete Oil Pump Works Well
    The pump worked well on a recent lower unit fluid change on a Suzuki DF 30 outboard. The only issue was with the diameter of the oil fitting that screws into the lower unit. The lower plug on this model outboard sits down in a hole. The pump fitting proved to be too large to screw into the drain/fill hole. I turned the fitting down until it fit (see photo with an unmodified fitting for comparison).
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    Top reviews from the United States

    Randy Satterfield
    5.0 out of 5 stars Good product
    Reviewed in the United States on March 28, 2024
    Size: 28mmVerified Purchase
    Worked as expected and had correct fitting for my boat motor
    Helpful
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    Donnie C
    5.0 out of 5 stars Perfect for the job!
    Reviewed in the United States on April 4, 2024
    Size: 28mmVerified Purchase
    I bought this to do the gear oil change on the outdrive of my 1995 OMC Sunbird Corsair 200SL 5.0L 302 Cobra V8. It worked perfectly and flawlessly. Would absolutely recommend and comes with plenty of different adapters depending on your situation. The threads on the hose worked for me and I didn't need to use the adapters. Great product!
    Helpful
     Report
    widget
    5.0 out of 5 stars Super impressed... 5R55s
    Reviewed in the United States on November 25, 2023
    Size: 28mmVerified Purchase
    I used this to top off the transmission fluid on a Ford 5R55s.

    Usually, this is messy as you have to shoot the fluid up into the fill... battle gravity and have the barbed hose fall out... and then watch it trickle down.

    Not with this.

    Get the vehicle up to operating temperature, pull the torx bit plug... thread in the 10MM adapter onto the swivel and the pan snug against the o-rings, and just start pumping away. The pump can easily be operated with an index finger and out of position when pumping transmission fluid... get in as much as you think you need, get your drain pan ready to catch the overflow, and unscrew the 10MM adapter from the pan and let it drain til it gets to the correct stream. Plug it back up and you're done.

    Easy and clean... wish I bought this years ago.
    Helpful
     Report
    Bruno
    4.0 out of 5 stars Easy to use
    Reviewed in the United States on August 29, 2023
    Size: 28mmVerified Purchase
    Worked out great
    Helpful
     Report
    LCADY
    5.0 out of 5 stars Works with Volvo Penta!
    Reviewed in the United States on October 1, 2023
    Size: 28mmVerified Purchase
    Makes gear oil changes so much easier and cleaner, worth every penny. I had no leaks at any connection points, and having the swivel head metal adapter is much nicer than the weaker plastic ones (not to mention lack of swivel is annoying when threading on/off on those models). It absolutely does work with Volvo Penta (I have a SX-M). I believe all Pentas have a 3/8” - 16 drain hole. No idea why the title says it doesn’t work with Volvo.
    One person found this helpful
    Helpful
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    Bruce Macdonald
    5.0 out of 5 stars Works well as designed
    Reviewed in the United States on April 6, 2024
    Size: 28mmVerified Purchase
    Works well as designed
    Helpful
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    Bob P.
    5.0 out of 5 stars Works great for my Mercury outboard.
    Reviewed in the United States on December 28, 2023
    Size: 28mmVerified Purchase
    While it has the attachments for Honda and other metric units, it comes with the attachment for my Mercury already on it. It screws right on the gear oil bottle making it easy to use. Good value!
    One person found this helpful
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    James Lowe
    5.0 out of 5 stars It is what vh it says it is 👍
    Reviewed in the United States on April 12, 2024
    Size: 28mmVerified Purchase
    Arrived very quickly! And as expected. 😃
    Helpful
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    Top reviews from other countries

    Brian Van Der Weide
    2.0 out of 5 stars Oil pump problems
    Reviewed in Australia on January 19, 2021
    Size: 28mmVerified Purchase
    Pump fell apart on the first pump. Spring gone. Good fort parts on another I have
    Report