Mercury Prop Nuts

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HP:

HP

Serial#

Sierra Prop Nut

9.9 (4-stroke Bigfoot) G760300- UP 18-3703
15 (4-stroke Bigfoot) G590000- UP 18-3703
18 5837437- UP 18-3703
20 6443973- UP 18-3703
25 6416713- UP 18-3703
35 Fits most applications. 18-3704
40 Fits most applications. 18-3704
50 Fits most applications. 18-3704
60 Fits most applications. 18-3704
65 2503991-3293183 18-3700
70 Fits most applications. 18-3704
70 A996142- UP 18-3700
75 6432901- UP 18-3700
80 2559001- UP 18-3700
85 3493913-4831998 18-3700
90 4845301- UP 18-3700
100 2484633-2836018 18-3700
100 B209468- UP 18-3700
115 2836019- UP 18-3700
125 2536210-2839368 18-3700
135 (inline) 2839369-3293233 18-3700
140 (inline) 3293234- UP 18-3700
150 (inline) 3502806- UP 18-3700
V-6 (135-300) -18-3700

HP

Serial#

Sierra Prop Nut

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HP:
Your Price: $9.99
Save: $1.96
(16% Off $11.95)
Part # 18-3700 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 18 hrs 38 mins.
Replaces OEM part #
  • CHRYSLER FORCE F7000
  • HONDA 90301-ZW1-003
  • MERCURY MARINE 11-52707
  • PLEASURECRAFT R017066
GLM 21242 replacement parts
Your Price: $1.99
Save: $0.80
(28% Off $2.79)
Part # 18-3703 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 18 hrs 38 mins.
Replaces OEM part #
  • MERCURY MARINE 11-88228
    For: 9.9 - 25 Hp 1986 & up

    Propeller Nut for Mercury/Mariner 11-88228, GLM 21242

Propeller Lock Nut - Sierra
Your Price: $9.74
Save: $7.13
(42% Off $16.87)
Part # 18-3704 ValueShip™ Eligible
SHIPS TOMORROW!* if ordered in 18 hrs 38 mins.
Replaces OEM part #
  • MERCURY MARINE 11-69578
  • MERCURY MARINE 11-69578Q1
  • MERCURY MARINE 11-69578A1
  • MERCURY MARINE 11-69578A2

Propeller Nut for Mercury, Mariner 11-69578A1 11-69578Q1, GLM 21240 21260

Sierra
Average Customer Review for Propeller Lock Nut - 18-3700 - Sierra
Full StarEmpty StarEmpty StarEmpty StarEmpty Star Based On 2 Reviews | Write Review
Full StarEmpty StarEmpty StarEmpty StarEmpty StarNut
by Charles from Casper, Wyoming on June 30, 2012
The nut you sent was the wrong size. Needed to be a 1" NOT a 1-1/16" so the washer was wrong also Propeller looks OK Haven't tried it yet.
(1 of 1 people found this review helpful)
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Full StarEmpty StarEmpty StarEmpty StarEmpty StarWRONG SIZE
by BOB from Industry, Pennsylvania on July 23, 2011
I WENT THROUGH THE WEB SITE PROCESS TO ORDER THE PROP I NEEDED AND IT AUTOMATICLY OFFERED ME THE OPTION OF BUYING THE PROP NUT AND OTHER ACCESSORIES THAT GO WITH THE PROP. EVERYTHING ELSE WORKED BEAUTIFULY BUT THE PROP NUT WAS TOO LARGE. SINCE IT COULDN'T BE RETURNED IF OPENED I JUST USED THE OLD NUT AND TOSSED THE NEW ONE.
(3 of 4 people found this review helpful)
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Average Customer Review for Propeller Lock Nut - 18-3703 - Sierra
Full StarFull StarFull StarFull StarEmpty Star Based On 7 Reviews | Write Review
Full StarFull StarFull StarFull StarFull StarLocknut
by James from Pasco, Washington on July 05, 2016
Good item. Works as planned.
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Full StarFull StarFull StarFull StarFull StarProp lock nut
by Jeffrey from Rosemount, Minnesota on June 19, 2015
A must have when replacing a prop
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Full StarEmpty StarEmpty StarEmpty StarEmpty StarWrong Size
by Marcus from Milford, Ohio on May 12, 2013
This was "suggested" when I ordered my prop, of course it's the wrong size so they got me for a few bucks for something I cannot use.
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Full StarFull StarFull StarFull StarFull StarPerfect fit
by Stephen from Wilmington, Illinois on June 14, 2012
I purchased this nut along with a new propeller and it fit and looks great.
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Full StarEmpty StarEmpty StarEmpty StarEmpty Starwrong nut
by Ron from Edgewater, Maryland on June 25, 2011
the prop nut that came up when I ordered the prop was the wrong nut for the prop.
(1 of 1 people found this review helpful)
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Full StarFull StarFull StarFull StarFull StarMercury Prop Nuts
by Randall from Bangor, Maine on August 17, 2010
Great Product and Fast Shipment!!
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Full StarFull StarFull StarFull StarFull StarReview for Propeller Nut for Mercury/Mariner 11-88228, GLM 21242 - Sierra
by a Customer on October 21, 2008
Good prop nut.
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Average Customer Review for Sierra 18-3704 Propeller Lock Nut
Full StarFull StarFull StarFull StarFull Star Based On 2 Reviews | Write Review
Full StarFull StarFull StarFull StarFull StarGood to go
by Johnson from Millbrook, Alabama on March 01, 2015
Machine work, materials and fit were top drawer.
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Full StarFull StarFull StarFull StarFull StarGreat ser.
by Mike from Hopkinsville, Kentucky on August 16, 2013
Great
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Q:
How do i replace item?
A:
Identify the OEM number and see if it cross references with this part. If you need some assistance give us a call at 1-800-914-1123.
Q:
How do i replace item #2 speedometer tube? Does it just screw into the housing?
A:
This is a prop nut for the propeller not for speedometer pitot tube. Those tubes just install on the stern of your boat with a basic hole pattern and screw it in. If further assistance is needed call us at 1-800-914-1123.
Q:
What is the thread size?
A:
Sierra can only match it up by engine application. There are no specs on this.
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