MasterTech
Marine
Bulletin Board
Overton's
For everything else boating related.

Wondering
"Where-'n-'Ell"
to get great parts for your outboard?

Right Here!

 

I'm Restoring A 1955 Merc MK55 Sandcast

1955 Mark 55 Sandcast Restoration

 

Meet the MasterTech!

Bill the Master Tech

 

If your Mfgr. says:

That motor's 7 years old.
Part is no longer available.
We lose $$ on service!
EPA made me do it!
Parts at central warehouse, you'll get them next month.
We don't make parts for those.
We only do warranty work.
Our techs only fix late models.
No clue what's wrong! So we'll work time & material.

Baloney!!

Contact the Mastertech!

 


,

 
banner with sunset over water in ship yard
 
 


Click here to order by phone

Important!!! You must allow JavaScript to run to use the drop-down navigation menu.
Please allow a few moments for the menu to load.
INTERNET EXPLORER users must also " allow blocked content" if the pop-up appears.
 





NEW & REBUILT GEARCASES

V-6 Motors

NEED A GEARCASE FOR A  3 or 4 CYLINDER MERC? FIND IT HERE.

Concerned about your gearcase or water pump? Try our gearcase tips page.

warning symbolNOTE!! You MUST PROVIDE THE SERIAL NUMBER when ordering. I cannot send you the correct parts otherwise!
BE SURE to specify shaft length (measure from top of gearcase to top of driveshaft)

Please take the time to enter the model and serial number of your motor!
It will be stored in the shopping cart and sent in with your order.
Please also supply the folowing information. Thanks!
Serial #

Length of Driveshaft

Number of reverse gear jaws (see above notes)

First On line purchase?

HOW TO TELL THE NUMBER OF REVERSE GEAR JAWS:
EXAMINE TAB AGAINST TRIM FIN SCREW

Driveshaft length is measured from the gearcase top to the top of the driveshaft. This length will be 2-3" longer than the one you order, e.g. your driveshaft measures 23" so the lower unit you need is listed as 20" .

 

NEW and Rebuilt units carry a 1 (one) year warranty. This is a supplier warranty. Most units have core value (included in price). Return shipping for cores is prepaid, if you have a repairable unit. MasterTech will remit the core credit after evaluation by the rebuilder.

PLEASE NOTE: OVERSEAS SHIPMENTS (INCLUDING HAWAII, ALASKA, & U.S. TERRITORIES) REQUIRE EXTRA SHIPPING CHARGES.
CORE CHARGES FOR THESE GEARCASES ARE NOT REFUNDABLE AND NO CORE IS REQUIRED. THE PRICE REMAINS THE SAME.

Rebuilt and new gearcases are subject to availability.

MERCURY/U. S. MARINER V-6 GEARCASES
CYL
 DESCRIPTION CORE PRICE PURCHASE
V-6
 Mercury/Mariner New Lower
115-135-150 HP 1986-2006 20"
2:1 Ratio 4-3/4" Hub
Also replaces old-style 1:7/8 ratio 4-1/4 Hub Units
(which have NO core value; the price remains the same)
$250
 ME-G6-03-N
$2,336
V-6
 Mercury/Mariner Rebuilt Lower
115-135-150 HP 1986-2006 20"
2:1 Ratio 4-3/4" Hub
Also replaces old-style 1:7/8 ratio 4-1/4 Hub Units
(which have NO core value; the price remains the same)
$250
 ME-G6-03-R
$1,998
V-6
 Mercury/Mariner New Lower
115-135-150 HP 1986-2006 25"
2:1 Ratio 4-3/4" Hub
Also replaces old-style 1:7/8 ratio 4-1/4 Hub Units
(which have NO core value; the price remains the same)
$250
 ME-G6-04-N
$2,336
V-6
 Mercury/Mariner Rebuilt Lower
150 HP 1986-2006 25"
2:1 Ratio 4-3/4" Hub
Also replaces old-style 1:7/8 ratio 4-1/4 Hub Units
(which have NO core value; the price remains the same)
$250
 ME-G6-04-R
$1,958
CYL
 DESCRIPTION CORE PRICE PURCHASE
V-6
 Mercury/Mariner New Lower
115-135-150 HP 1986-2006 25"
2:1 Ratio 4-3/4" Hub COUNTER ROTATION
Also replaces old-style 1:7/8 ratio 4-1/4 Hub Units
(which have NO core value; the price remains the same)
$250
 ME-G6-05-N
$2,516
V-6
 Mercury/Mariner Rebuilt Lower
150 HP 1986-2006 25"
2:1 Ratio 4-3/4" Hub COUNTER ROTATION
Also replaces old-style 1:7/8 ratio 4-1/4 Hub Units
(which have NO core value; the price remains the same)
$250
 ME-G6-05-R
$2,138
V-6
 Mercury/Mariner New Lower
150 EFI-175-200 HP 1986-2006 20"
1.87:1 Ratio 4-3/4" Hub
Also replaces old-style 1:7/8 ratio 4-1/4 Hub Units
(which have NO core value; the price remains the same)
$250
 ME-G6-08-N
$2,336
V-6
 Mercury/Mariner Rebuilt Lower
150 EFI-175-200 HP 1986-2006 20"
1.87:1 Ratio 4-3/4" Hub
Also replaces old-style 1:7/8 ratio 4-1/4 Hub Units
(which have NO core value; the price remains the same)
$250
 ME-G6-08-R
$1,998
V-6
 Mercury/Mariner New Lower
150 EFI-175-200 HP 1986-2006 25"
1.87:1 Ratio 4-3/4" Hub
Also replaces old-style 1:7/8 ratio 4-1/4 Hub Units
(which have NO core value; the price remains the same)
$250
 ME-G6-09-N
$2,336
V-6
 Mercury/Mariner Rebuilt Lower
150 EFI-175-200 HP 1986-2006 25"
1.87:1 Ratio 4-3/4" Hub
Also replaces old-style 1:7/8 ratio 4-1/4 Hub Units
(which have NO core value; the price remains the same)
$250
 ME-G6-09-R
$1,998
CYL
 DESCRIPTION CORE PRICE PURCHASE
V-6
 Mercury/Mariner New Lower
150 EFI-175-200 HP 1989-2006 25"
1.87:1 Ratio 4-3/4" Hub COUNTER ROTATION
Also replaces old-style 1:7/8 ratio 4-1/4 Hub Units
(which have NO core value; the price remains the same)
$250
 ME-G6-10-N
$2,516
V-6
 Mercury/Mariner Rebuilt Lower
150 EFI-175-200 HP 1989-2006 25"
1.87:1 Ratio 4-3/4" Hub COUNTER ROTATION
Also replaces old-style 1:7/8 ratio 4-1/4 Hub Units
(which have NO core value; the price remains the same)
$250
 ME-G6-10-R
$2,154
V-6
 Mercury/Mariner New Lower
200 DFI-225-250 HP 3.0L 1994-up 20"
1.87:1 Ratio 4-3/4" Hub
NOTE: Please specify the # of driveshaft splines in the comment box when you go to checkout!
$250
 ME-G6-12-N
$2,414
V-6
 Mercury/Mariner Rebuilt Lower
200 DFI-225-250 HP 3.0L 1994-up 20"
1.87:1 Ratio 4-3/4" Hub
NOTE: Please specify the # of driveshaft splines in the comment box when you go to checkout!
$250
 ME-G6-12-R
$2,138
V-6
 Mercury/Mariner New Lower
200 DFI-225-250 HP 3.0L 1994-up 25"
1.87:1 Ratio 4-3/4" Hub
NOTE: Please specify the # of driveshaft splines in the comment box when you go to checkout!
$250
 ME-G6-13-N
$2,414
V-6
 Mercury/Mariner Rebuilt Lower
200 DFI-225-250 HP 3.0L 1994-up 25"
1.87:1 Ratio 4-3/4" Hub
NOTE: Please specify the # of driveshaft splines in the comment box when you go to checkout!
$250
 ME-G6-13-R
$2,138
V-6
 Mercury/Mariner New Lower
200 DFI-225-250 HP 3.0L 1994-up 30"
1.87:1 Ratio 4-3/4" Hub
NOTE: Please specify the # of driveshaft splines in the comment box when you go to checkout!
$250
 ME-G6-14-N
$2,414
V-6
 Mercury/Mariner Rebuilt Lower
200 DFI-225-250 HP 3.0L 1994-up 30"
1.87:1 Ratio 4-3/4" Hub
NOTE: Please specify the # of driveshaft splines in the comment box when you go to checkout!
$250
 ME-G6-14-R
$2,138
CYL
 DESCRIPTION CORE PRICE PURCHASE
V-6
 Mercury/Mariner New Lower
200 DFI-225-250 HP 3.0L 1994-2006 20"
1.87:1 Ratio 4-3/4" Hub COUNTER ROTATION
NOTE: Please specify the # of driveshaft splines in the comment box when you go to checkout!
$250
 ME-G6-15-N
$2,634
V-6
 Mercury/Mariner Rebuilt Lower
200 DFI-225-250 HP 3.0L 1994-2006 20"
1.87:1 Ratio 4-3/4" Hub COUNTER ROTATION
NOTE: Please specify the # of driveshaft splines in the comment box when you go to checkout!
$250
 ME-G6-15-R
$2,378
V-6
 Mercury/Mariner New Lower
200 DFI-225-250 HP 3.0L 1994-2006 25"
1.87:1 Ratio 4-3/4" Hub COUNTER ROTATION
NOTE: Please specify the # of driveshaft splines in the comment box when you go to checkout!
$250
 ME-G6-16-N
$2,634
V-6
 Mercury/Mariner Rebuilt Lower
200 DFI-225-250 HP 3.0L 1994-2006 25"
1.87:1 Ratio 4-3/4" Hub COUNTER ROTATION
NOTE: Please specify the # of driveshaft splines in the comment box when you go to checkout!
$250
 ME-G6-16-R
$2,378
V-6
 Mercury/Mariner New Lower
200 DFI-225-250 HP 3.0L 1994-2006 30"
1.87:1 Ratio 4-3/4" Hub COUNTER ROTATION
NOTE: Please specify the # of driveshaft splines in the comment box when you go to checkout!
$250
 ME-G6-17-N
$2,634
V-6
 Mercury/Mariner Rebuilt Lower
200 DFI-225-250 HP 3.0L 1994-2006 30"
1.87:1 Ratio 4-3/4" Hub COUNTER ROTATION
NOTE: Please specify the # of driveshaft splines in the comment box when you go to checkout!
$250
 ME-G6-17-R
$2,378
DON'T SEE WHAT YOU NEED? JUST ASK.
 QUICK QUOTE FORM

Now that you have found what you need, please order it using the shopping cart above, the secure quick order form, or call in your order. Prices iinclude shipping by UPS 3 day within the 48 contiguous United States only. Some bulky and extremely heavy items may incur additional charges. You will be notified beforehand if this is the case. Remember, all orders receive free technical support from the MasterTech!

  
 

Please review our Warranty, Returns & Refunds policies before you place an order.

DISCLAIMER

The information provided on these pages is correct to the best of my knowledge, however the MasterTech makes no warranty, express or implied, regarding the use of, results of, or liability created from, application of this data. This information is disseminated in good faith, however MasterTech assumes NO LIABILITY whatsoever in regard to this service. The information, software, products, and services published on this web site may include inaccuracies or typographical errors. Changes are periodically added to the information herein. Mastertech may make improvements to this site at any time. Parts ordered from this website may or may not be in dealer stock at the time of order. Thank you for reading.

Site best viewed at 1024 x 768 resolution or higher with Firefox 1.5-up, Netscape 6, or IE 5 or higher

© 1999-2008 MasterTech Marine
Revised 3-15-08