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Brass Gearcase Adapter Set

In stock
SKU
K1022
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Brass Gearcase Adapter Set 5 4.4 5 1
$33.64

1/4" Hose barb fitting for leak free connection to 3 adapters.

Fits: most Chrysler, Evinrude, Force, Johnson, Mariner, Mercury outboards, Suzuki, Tohatsu, and Yamaha lower units.

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Brass Gearcase Adapter Set

  • INCLUSION & COMPATIBILITYThis kit is a Brass Gearcase Adapter Set w/ 1/4" Hose barb fitting for a leak-free connection to 3 adapters. It fits most Chrysler, Evinrude, Force, Johnson, Mariner, Mercury outboards, Suzuki, Tohatsu, and Yamaha lower units.
  • EASY INSTALLATION AND REMOVALWhen paired with our gearcase pressure and vacuum tester, our Brass Gearcase Adapter Kit helps for a quick connection to make the installation and removal process easier and faster during pressure/vacuum testing.
  • IDEAL TOOL FOR DIYERS & PROSWhether you're just starting to work on your boats or are a seasoned marine mechanic, this adapter set makes gearcase maintenance more manageable and stress-free.
  • BUILT & DEVELOPED WITH A MISSIONWe are on a mission to support boat owners and mechanics in their boating lifestyle through the tools we create like this Brass Gearcase Adapter Set.
  • LIFETIME WARRANTYAs a small business located in Charleston, South Carolina, USA, we take pride in all our tools. They are all built to last, backed with a lifetime warranty.

Customer Reviews

4.4
4.4 out of 5 stars
88%
5 Reviews
60% of customers
recommend this product
5 stars 3 (100%)
4 stars 0 (0%)
3 stars 0 (0%)
2 stars 0 (0%)
1 star 0 (0%)
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Rating
Newest
Helpfulness
GREAT GEARCASE ADAPTERS GREAT WORKMANSHIP ...
5
Feb 17, 2026
GREAT GEARCASE ADAPTER GREAT WORKMANSHIP WORKS GREAT WITH MY VAC/PRES TESTER HIGHLY RECOMMEND
Was this review helpful? 0
The Snap on tools for the marine industry
5
Feb 11, 2026
Needed these to pressure test my outdrive. Worked awesome, Like all of the other tools I have ordered from Marine Tech.
Was this review helpful? 0
Verified Buyer
These adapters work great. Unfortunately, I purchased the gearcase pressure/vacuum testing kit with these adapters included. One of them was defective so I had to purchase this additional kit so I could use the tool I purchased. Customer service was of no
5
Aug 2, 2023
These adapters work great. Unfortunately, I purchased the gearcase pressure/vacuum testing kit with these adapters included. One of them was defective so I had to purchase this additional kit so I could use the tool I purchased. Customer service was of no help to me.
Was this review helpful? 0
Verified Buyer
They work but are of poor quality!
2
Dec 22, 2021
The adapters are fine as far as function. The knurls on the adapters SUCK! Whoever is making these needs more practice knurling! Just poor workmanship and quality! Your hands are going to be oily which is the purpose of the knurls to get a grip.
Was this review helpful? 2
Response from Admin
Feb 25, 2025
I will leave this review here even though I certainly disagree with your assessment of 2 star quality of the machining. Maybe the knurls could be a bit deeper for your liking but they are clean and the parts are nicely made. - Leon (owner)
Verified Buyer
Perfect loose very little oil when I disconnect
5
Nov 25, 2021
Hello. I stopped by the shop a few weeks back and picked up the gear case adapters brought them to the shop and they love them. Bought a set just for me
Was this review helpful? 0
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