Yamaha & Mariner 40HP Gearcase Lower Unit Fresh Water Tested Excellent
Yamaha & Mariner 40HP Gearcase Lower Unit Fresh Water Tested Excellent
Yamaha & Mariner 40HP Gearcase Lower Unit Fresh Water Tested Excellent
Yamaha & Mariner 40HP Gearcase Lower Unit Fresh Water Tested Excellent
Yamaha & Mariner 40HP Gearcase Lower Unit Fresh Water Tested Excellent
Yamaha & Mariner 40HP Gearcase Lower Unit Fresh Water Tested Excellent
Yamaha & Mariner 40HP Gearcase Lower Unit Fresh Water Tested Excellent
Yamaha & Mariner 40HP Gearcase Lower Unit Fresh Water Tested Excellent
Yamaha & Mariner 40HP Gearcase Lower Unit Fresh Water Tested Excellent
Yamaha & Mariner 40HP Gearcase Lower Unit Fresh Water Tested Excellent
Yamaha & Mariner 40HP Gearcase Lower Unit Fresh Water Tested Excellent

Yamaha & Mariner 40HP Gearcase Lower Unit Fresh Water Tested Excellent

We have 1 in stock.

Regular price $2,400.00 $794.95 Sale


Yamaha & Mariner 40HP Gearcase Lower Unit Fresh Water Tested Excellent

This lower unit is in excellent cosmetic and mechanical used condition. Minor paint scuffs and a small chip in the back of the skeg are the only defects to be found. This unit was pulled from a 1994 Yamaha 40hp that fell over on a stand and broke the belly pan. This will also fit Mercury Mariner motors made by Yamaha in the late 80's. The following part numbers are a match to this gearcase. 6H4-45300-02-4D 6H4-45300-12-4D 7123M 7995M No oil in unit, Must be properly filled before use. Impeller was not checked or changed. Suggest changing before installation on your motor.
Brand: Yamaha
Manufacturer Part Number: 6H4-45300-02-4D 6H4-45300-12-4D 7123M 7995M
Warranty: 30 Day
Country/Region of Manufacture: Japan
Horsepower: 40
Transom Length: 20
Part Number Cross References: 6H4-45300-02-4D 6H4-45300-12-4D 7123M 7995M
Engine(HP): 40
Stroke: 2-Stroke

Condition: Used



PLEASE make sure this will fit your application before buying.  If your specific model is not mentioned in this listing, you must check your own fitment. 

If you are not sure if the part will work on your motor send us a message.  Include the year, horsepower, make, model # and/or serial # of your motor so we can assist you.  For Mercury motors we absolutely need your serial number.  For Johnson/Evinrude motors we need your model number.  If we cannot pull up a parts diagram from the information provided we cannot confirm fitment.


Carefully review each and every photo as they best describe the condition of the item(s) and what is all included in this listing.  If something isn't photo'd or mentioned here in the description then it is not included.




Pine Lake Parts is not an authorized dealer for any Manufacturer except for CHP Systems, Inc.


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