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Model / HP :

Model / HP

CYL

Bore Size

OEM Part #

Sierra Piston Rings

Mallory Piston Rings

40-50 2 3.312 / std. 39-817869A1, FA663260 18-39010 -
40-50 2 3.322 / .010 39-817869A2, FSA335260 18-3952 -
40-50 2 3.342 / .030 39-817869A3, 39-818110A1 18-3953 9-54102
40-50 2 3.375 / std 39-8204757A2, FA528269, FA528260, 39-820457A1, 39-820457A2 18-3998 -
40-50 2 3.385 / .010 39-820641A1 18-3999 -
40-50 2 3.405 / .030 39-818129A2 18-4000 -
85-90 3 3.312 / std. 39-817869A1, FA663260 18-39010 -
85-90 3 3.322 / .010 39-817869A2, FSA335260 18-3952 -
85-90 3 3.342 / .030 39-817869A3, 39-818110A1 18-3953 9-54102
85-90 L-DRIVES 3 3.312 / std. 39-817869A1, FA663260 18-39010 -
85-90 L-DRIVES 3 3.322 / .010 39-817869A2, FSA335260 18-3952 -
85-90 L-DRIVES 3 3.342 / .030 39-817869A3, 39-818110A1 18-3953 9-54102
90 L-DRIVE 3 3.375 / std 39-8204757A2, FA528269, FA528260, 39-820457A1, 39-820457A2 18-3998 -
90 L-DRIVE 3 3.385 / .010 39-820641A1 18-3999 -
90 L-DRIVE 3 3.405 / .030 39-818129A2 18-4000 -
90 SPORT JET 3 3.375 / std 39-8204757A2, FA528269, FA528260, 39-820457A1, 39-820457A2 18-3998 -
90 SPORT JET 3 3.385 / .010 39-820641A1 18-3999 -
90 SPORT JET 3 3.405 / .030 39-818129A2 18-4000 -
120-150 4 3.312 / std. 39-817869A1, FA663260 18-39010 -
120-150 4 3.322 / .010 39-817869A2, FSA335260 18-3952 -
120-150 4 3.342 / .030 39-817869A3, 39-818110A1 18-3953 9-54102
120 L-DRIVE, SPORT JET 4 3.375 / std 39-8204757A2, FA528269, FA528260, 39-820457A1, 39-820457A2 18-3998 -
120 L-DRIVE, SPORT JET 4 3.385 / .010 39-820641A1 18-3999 -
120 L-DRIVE, SPORT JET 4 3.405 / .030 39-818129A2 18-4000 -

Model / HP

CYL

Bore Size

OEM Part #

Sierra Piston Rings

Mallory Piston Rings

Refine Parts List
Model / HP :
Price: $32.00
Save: $10.49
(24% Off $42.49)
Part # 18-3998
2nd Day Air for $2 More Eligible
Price: $25.99
Part # 18-3999
2nd Day Air for $2 More Eligible
Hurry! Only 1 left in stock
No Reviews
Price: $28.77
Save: $9.22
(24% Off $37.99)
Part # 18-39010
2nd Day Air for $2 More Eligible
Force Lit 40-120hp Ring Std
Price: $20.36
Save: $4.69
(18% Off $25.05)
Part # 200-210
2nd Day Air for $2 More Eligible
No Reviews
Mercury Sport Jet Ring Set .030
Price: $16.27
Save: $3.68
(18% Off $19.95)
Part # 200-206-06
No Reviews
Sierra
Piston Rings/Piston ring sets for Force
Average Customer Review for Piston Rings - 18-3998 - Sierra
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Good deal
by Jefferey from Oakley, California on April 06, 2012
Good price, good product, good fast shipping.
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Average Customer Review for Piston Rings - 18-39010 - Sierra
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Piston Rings for 1984 Force 85 HP
by David from Whitefish, Montana on May 14, 2013
Rings came in pairs. One ring fit same as original. The other did not match original. I am waiting several weeks for Sierra to figure it out and get me the correct set of rings. In the meantime my motor is sitting there in pieces and I can't use my boat. Not very happy.
(1 of 1 people found this review helpful)
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Incorrect piston rings
by Bradley from Waverly, Ohio on July 15, 2012
It appears the table on the iboats web page is incorrect. I have ordered OEM rings from another supplier which references a different model number than the one listed on the iboats web page. I would assume others are having the same problem if this is the case. We'll see what happens.
(0 of 1 people found this review helpful)
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Q:
Can I get the rings only of part # 18-4629?
A:
Yes you can. That part # is 18-39010 for the standard rings.


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