Sierra
Mercruiser R, MR Sterndrive Water Pump Assembly Exploded View
Mercruiser Sterndrive Water Pump Assembly Exploded View Diagram and Parts
Fits R/MR
Figure #DescriptionO.E.M. #Sierra #Qty.
1Guide, Water Tube23-29804 18-31091
2Grommet, Water Tube Guide (Included with 18-3109)26-38970 18-31101
3O-Ring25-30613 18-71581
4Seal, Dust Cover25-30271 18-74261
5Nut, Housing Retainer11-45592 18-37231
6Nut, Housing Retainer11-20361, 11-35888 18-37222
7Washer, Housing Retainer12-29245 18-42753
8Bolt, Housing Retainer10-30720 18-32261
9Washer, Housing Retainer12-36001 18-42701
10Housing, Impeller46-96148A1 18-31161
11Cup, Impeller (Included with 18-3116)48752 18-31141
12Impeller47-89984 18-30171
13Key, Impeller N/A 
14Gasket, Impeller27-85609-1 18-29151
15Wear Plate, Impeller32435 18-31171
16Gasket, Wear Plate27-85608-1 18-29141
17Pin, Alignment17-35973 18-32271
18Base Assembly46-57234A1 18-34171
19Oil Seal, Base Assembly (Included in 18-3417)26-16977 18-20131
20Oil Seal, Base Assembly (Included in 18-3417)26-89238 18-20141
21O-Ring, Base Assembly25-33145 18-71621
22Gasket, Base Assembly27-85610-1 18-28261
Average Customer Review for Water Pump Gasket - 18-2914-9 - Sierra
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water pump gasket
by Tim from Harold, Kentucky on May 12, 2015
got it in good time and work good
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Water Pump Gasket
by Jack from Valiant, Oklahoma on July 24, 2014
fit worked thanks
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gasket's
by Kevin from Wellsville, Ohio on May 27, 2011
great price, quality shipping !
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Average Customer Review for O-Ring - 18-7162-9 - Sierra
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O-rings
by George from Summerfield, Florida on November 05, 2011
O-ring fits a 1950 5hp Johnson outboard, worked perfect, also works on some other vintage outboard motors. Very pleased !!!
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Average Customer Review for Water Pump Insert Cup - 18-3114 - Sierra
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Review for Water Pump Insert Cup for Mercruiser 48752T, Mercury/Mariner, GLM 12810 - Sierr
by a Customer on March 20, 2009
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Average Customer Review for Water Tube Guide - 18-3109 - Sierra
Full StarFull StarFull StarFull StarHalf Star
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Wrong part, but my fault
by John from Plains, Georgia on July 09, 2014
This was the wrong part, but it was my fault. Came quickly though!
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great parts
by Jay from Victor, Montana on August 12, 2013
great fit nice parts !
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Full StarFull StarFull StarFull StarEmpty Star
My Order
by Robert from Roanoke, Virginia on June 07, 2011
Its just as I ordered. Robert
(0 of 3 people found this review helpful)
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Average Customer Review for Water Pump Gasket - 18-2915-9 - Sierra
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works
by Bryan from Big Lake, Minnesota on August 26, 2011
not much else to say but it works
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Average Customer Review for O-Ring - 18-7426-9 - Sierra
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O-Ring - Sierra
by Carter from North Plains, Oregon on October 10, 2011
Fits perfect.
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Average Customer Review for Sierra 18-3017 - Water Pump Impeller
Full StarFull StarFull StarFull StarFull Star
Based On 23 Reviews | Write Review
Full StarEmpty StarEmpty StarEmpty StarEmpty Star
Wrong parts
by David from Kellogg, Minnesota on June 15, 2016
Seal kit and impeller for 40hp 4 cyl. Customer service gave me part numbers for a 150hp? No transparity for who it was. Will think twice about I boats next time.
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Full StarFull StarFull StarFull StarFull Star
Great product
by Tammy from Boyle, Mississippi on May 20, 2016
The item was pictured just as I received it. Arrived on time. I have ordered several items and I have never had a problem.
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Full StarFull StarFull StarFull StarFull Star
Pump impeller
by Rudy from Mesick, Michigan on October 05, 2015
Fits perfectly.
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It is exactly what it says it is
by Isaac from Winona, Minnesota on August 27, 2015
Impeller fit right in to the housing, took the boat out and it ran fantastic.
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Full StarFull StarFull StarFull StarFull Star
Fits like a glove
by Daniel from Akron, Ohio on April 25, 2015
The product fit my 1977 115hp Mercury perfectly
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First time costumers
by Jesus from San Antonio, Texas on April 24, 2015
Different brand pomp
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Good
by Carrie from Kingsley, Iowa on September 05, 2014
Fast shipping and product was great.
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Full StarFull StarFull StarFull StarFull Star
impeller
by Richard from Williamsport, Pennsylvania on August 12, 2014
Product as stated.
(0 of 1 people found this review helpful)
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Full StarFull StarFull StarFull StarEmpty Star
??? what is this
by Jack from Valiant, Oklahoma on July 15, 2014
everthing just like it needed to be
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Full StarFull StarFull StarFull StarFull Star
Customer review
by Timothy from Kingman, Arizona on May 13, 2014
Best boat parts site that I have ever used. Fast accurate service. Thank you.
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Full StarFull StarFull StarFull StarFull Star
water pump impeller
by Doug from Lakeside, Arizona on October 11, 2013
Product is what I expected. Great quality! Shipping and communication excellent! Thanks for being here.
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impellor
by Van from Ravenna, Ohio on July 09, 2013
excellent and fast service
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product was fine
by John from Inver Grove Heights, Minnesota on July 16, 2012
It was the two week wait that me off.
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Full StarFull StarFull StarFull StarFull Star
Water Impeller
by Jeff from Belding, Michigan on July 07, 2012
....good price....good delivery.....works fine....
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Full StarFull StarFull StarFull StarFull Star
Good
by Kurt from Temple, Texas on July 04, 2012
just as described
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Full StarFull StarFull StarFull StarFull Star
water pump impellar
by James from Racine, Wisconsin on May 08, 2012
very fast shipping and product was as discribed. I will buy from iboats again.
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right part
by Les from Republic, Missouri on February 26, 2012
fits fine fast shipping
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Perfect Fit
by Elbert from Columbus, Mississippi on November 04, 2011
I was extremely happy with the super fast shipping and the exact fit that I was looking for out of this product. iboats makes finding parts for my outboard so easy!
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impeller
by Glenn from Olathe, Kansas on July 09, 2011
Looked good and fit good just like the original one.
(2 of 2 people found this review helpful)
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Full StarFull StarFull StarFull StarFull Star
water impeller
by Tim from Maple, Wisconsin on July 09, 2011
super item just what i wanted hope to by more parts .
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alpha impeller
by Kevin from Wellsville, Ohio on May 27, 2011
Great quality,price shipping
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Quick Shipping
by Christopher from Willis, Texas on May 25, 2011
Thanks iboats, you got this to me very quickly
(1 of 1 people found this review helpful)
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Review for Sierra 18-3017 Impeller
by a Customer on October 24, 2008
Received way to many emails on just one small oreder, must have received four or five.
(15 of 28 people found this review helpful)
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easy life
by Jay from Victor, Montana on August 12, 2013
great fitting parts . right the first time easy ordering and purchasing . thanks and they getem here fast too.
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Not what I expected
by John from Bolling AFB, Washington, D.C. on October 13, 2015
This is not what I expected. Given I didn't do the research before buying but the ad didn't have pictures.
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Full StarEmpty StarEmpty StarEmpty StarEmpty Star
Will NOT fit Yamaha 40hp, 2002 vintage
by John from Norwich, Connecticut on June 24, 2013
Will NOT fit Yamaha 40hp, 2002 vintage motor, as listed.
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Average Customer Review for Sierra Mercury Seal - 18-2013 - Sierra
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Perfect fit
by Edward from Sugar Land, Texas on September 03, 2013
Perfect fit. Came just in time for the work/
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Average Customer Review for Water Pump Housing - 18-3116 - Sierra
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great parts
by Jay from Victor, Montana on August 22, 2013
great fitting aftermarket parts works as designed .thanks again Iboats for the fair deals.
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Q:
Does it come with any gaskets o rings to usewhen putting everything back together after install"?
A:
There are gaskets and such if you are replacing the water pump kit. So if you are taking apart the housing and such there are. If you are just replacing impeller then no. This impeller does not come with any other items, just the impeller.


Q:
Hello!Will this impeller fit my 4hp mercury and how about the drive key. Thanks!?
A:
We will need to know the engine serial number to confirm impeller.


Q:
Will this fit a 1976 Mercury 850XS?
A:
Yes this will fit your motor.


Q:
Need a water pump kit for a 2006 150 XL OPT What is P/N?
A:
We will need engine serial number to confirm water pump parts.


Q:
What is dia. of center hole and width of fins?
A:
The dimensions are as follows: Inner Diameter: 0.875" Outer Diameter: 2.368" Height: 1.325"


Q:
Is this the right impeller for my 1990 90hp force outboard?
A:
Yes


Q:
Is this the right impellor for a 1995 Mercury V-135 outboard?
A:
Yes this impeller will work for your Mercury V-135 1995 as long as your serial number fits the range of 0A904646 THRU 0C100860.
A:
Yes this is the correct impeller for your outboard.


Q:
I have a Force by mercury. 40 hp-1995. oe124358. What impeller?
A:
The impeller for your engine is 18-3057.


Q:
Does this come with the seals already installed?
A:
This is housing only. It does not come with seals that you get in purchasing the kit.


Q:
Does it have the cup?
A:
Yes the cup is included with this housing.


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Price: $3.45
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Part # 18-2914-9
2nd Day Air for $2 More Eligible
Replaces OEM part #
  • MERCURY MARINE 27-85608-1
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Part # 18-2826-9
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  • MERCURY MARINE 27-85610-1
  • MERCURY MARINE 27-856704
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Part # 18-7162-9
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Transom Mount ( Cobra )
Upper Gimbal Seal
Engine 262 - 460 , Year 1988-90
Engine 2.3 - 7.5 , Year 1986 -90

Dimensions ( in )
I.D. 2.025
Width .135

Replaces OEM part #
  • OMC 302337
  • MERCURY MARINE 25-33145
  • VOLVO 3852044
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Part # 18-3114
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  • MERCURY MARINE 48752T
  • MERCURY MARINE 48752
Part of 18-3116 Housing
Water Pump Base Dowel Pin - Sierra
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Part # 18-3227-9
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Replaces OEM part #
  • MERCURY MARINE 17-35973
For R/MR Alpha One
Pkg. of 5
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Part # 18-3109
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  • MERCURY MARINE 23-29804T
  • MERCURY MARINE 23-29804
Use with 18-3116 Housing
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Part # 18-2915-9
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  • MERCURY MARINE 27-858524
  • MERCURY MARINE 27-85609-1
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Part # 18-7426-9
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Dimensions ( in )
I.D. .740
Width .310

Replaces OEM part #
  • MERCURY MARINE 25-30271
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Part # 18-3017
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Replaces OEM part #
  • CHRYSLER FORCE 47-F694065
  • CHRYSLER FORCE 47-803631T
  • CHRYSLER FORCE 47-89984T4
  • MERCURY MARINE 47-89984T4
  • MERCURY MARINE 47-89984
  • MERCURY MARINE 47-30221
  • MERCURY MARINE 47-899844
  • MERCURY MARINE 47-899842
  • MERCURY MARINE 47-85460
  • MERCURY MARINE 47-89984T3
For all #1 Units thru S/N D494568 Also for raw water pump on:
190 IB S/N 1564539-1720903 225 IB S/N 1539620-2278646
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Part # 18-3110
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  • MERCURY MARINE 26-38970
  • Part of 18-3116 Housing
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Replaces OEM part #
  • MERCURY MARINE 10-30720
For R units
Pkg. of 5
Mercury Marine 12-36001 replacement parts
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Replaces OEM part #
  • MERCURY MARINE 12-36001
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Part # 18-3723-9
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Replaces OEM part #
  • MERCURY MARINE 11-45592
  • MERCURY MARINE 11-826709111
  • MERCURY MARINE 11-20102

Details:

  • Package of 5
  • Thread Size 5/16" - 24
  • Material: Stainless Steel

For: Mercruiser 11-45592, Mercury, Mariner, GLM 21190

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Part # 18-2013
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Shaft Size - 0.875"
Outer Diameter - 1.250"
Width - 0.188"

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  • MERCURY MARINE 26-16977
Mercury Marine 12-29245 replacement parts
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Part # 18-4275
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  • MERCURY MARINE 12-29245
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Part # 18-3116
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  • MERCURY MARINE 46-96148T
  • MERCURY MARINE 46-96148A1
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Part # 18-2014
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Shaft Size - 0.875"
Outer Diameter - 1.500"
Width - 0.312"

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  • MERCURY MARINE 26-89238
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  • MERCURY MARINE 11-20361
  • MERCURY MARINE 11-35888
  • OMC 121731
  • VOLVO 3852005
Package of 5
Thread Size 1/4" - 28
For: Volvo Penta PJX, SX, DPS, DP, DPX, 3.0L GL, GS, 4.3L GL, GS, GI, 5.0L FL, FI, 5.7L GL, GI, 5.8L FL, FI, FSI, 7.4L GL, GI, GSI, 8.2L GL
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Dimensions ( in )
I.D. .740
Width .100

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  • OMC 310585
  • MERCURY MARINE 25-30613
  • OMC 310967
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Part # 18-3117
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  • MERCURY MARINE 32435
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Part # 18-3417
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Replaces OEM part #
  • MERCURY MARINE 46-57234A1