Crowley Marine: serving boaters for over 50 years Crowley Marine: serving boaters for over 50 years
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Screw 10-4000333

Satisfaction rating 5 out of 5 (11 Ratings)
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Last update: 155 days ago Update Now

Product Description

Mercury factory part. Search for more factory parts & parts diagrams.

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11 Product Reviews


Excellent, easy to order and shipped the next day!



Repair Difficulty
Repair Time
More than 4 hours
well ,I ordered the parts i needed on a saturday,didn;t get shipped till tuesday and since it was i got to me friday

Problem fixed: leaking water from exhaust gasket

1 first removing the bolts that hold the exhaust manifold on slowly ,could strip out the threads ,spray like WD-40 on the exposied part of the tought bolts move 1/4 turn in and out ,wait about 5 or 10 mins then repeat,hopefully you won;t lose the threads. 2 this motor had 2 gaskets the 1 next to the head was leaking,carb.cleaner or brake part cleaner worked good on removeing old gasket. then i replaced the 1 that was leaking,ok .then when i started the motor the other 1 was dripping ,so to do it right had to repeat step 1 and 2 and replace 4 or 5 bolts that go into head ,all together it took about 2 weeks to get it not to leak ,thats it good luck




Mercury 25hp



Mercury 9.9 - 2 stroke

Repair Difficulty
Repair Time
Less than 30 mins
Much better this go round. Thanks for your courtesy.

Parts diagrams are great - always the right thing and on time. You are my go to supplier for outboard parts.

Product Fitment Grid

This guide is to be used as a reference only. You must verify fitment using your model or serial number.

BRAND MODEL 2001 2002 2003 2004 2006
Mariner Outboard 40 [ELO] x - x x -
Mariner Outboard 40 [ELPTO] x - - x -
Mariner Outboard 40 [ML] x - x x -
Mariner Outboard 40 [M] x x x x -
Mariner Outboard 40 [XL] - - - x -
Mariner Outboard 50 [MH] - - - - x
Mercury Outboard 40 [ELO] x - x x -
Mercury Outboard 40 [ML] x x x x -
Mercury Outboard 40 [M] x x x x -
Mercury Outboard 40EFI [ELPTO 4] x - x x -

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Parts included in this kit

Please note: Some of the included items may not be available for purchase separately and won't be listed here.

Name SKU Price Brand
Stud 8161945 Mercury Marine
Stud, (M6 x 50) 8161944 Mercury Marine

Supersession Chain

Name SKU Superceding SKU
BOLT 82304218 4000333
Due to manufacturer policy OEM Mercury products can only be shipped to addresses within the United States.

Flat $3.95 Shipping on ALL parts orders

We offer shipping flat $3.95 shipping on ALL parts orders. (Complete Engines, Lower Units and Sterndrives excluded). In addition orders over $89 have reduced cost express shipping available in checkout.

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