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Mercruiser MR, Alpha Sterndrive Water Pump Assembly Exploded View

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Sierra
Mercruiser MR, Alpha Sterndrive Water Pump Assembly Exploded View
Mercruiser Sterndrive Water Pump Assembly Exploded View Diagram and Parts
Fits MR Alpha
Figure #DescriptionO.E.M. #Sierra #Qty.
1Guide, Sleeve23-29804 18-31091
2Seal, Sleeve Guide (Included in 18-3109)26-38970 18-31101
3Ring, Upper25-30613 18-71581
4Ring, Dust25-30271 18-74261
5Nut, Housing N/A1
6Washer, Housing12-36001 18-42703
7Screw, Housing N/A 
8Housing, Water Pump46-96148A1 18-31161
9Cup, Impeller (Included in 18-3116)48752 18-31141
10Impeller47-89984 18-30171
11Gasket, Impeller27-85609-1 18-29151
12Plate, Impeller32435 18-31171
13Gasket, Stainless Steel Plate27-85608-1 18-29141
14Water Pump Base Assembly46-44292A3 18-34201
15Oil Seal, Water Pump Base (Included in 18-3420)26-16977 18-20131
16Gasket, Water Pump Base27-42631-1 18-29191
17Oil Seal, Water Pump Base (Included in 18-3420)26-89238 18-20141
18O-Ring, Water Pump Base25-90011 18-71761
19Pin, Alignment N/A 
20Nut, Housing N/A 
21Washer, Housing12-29245 18-42752
Average Customer Review for Water Pump Gasket - 18-2914-9 - Sierra
Full StarFull StarFull StarFull StarFull Star Based On 3 Reviews | Write Review
Full StarFull StarFull StarFull StarFull Starwater pump gasket
by Tim from Harold, Kentucky on May 12, 2015
got it in good time and work good
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Full StarFull StarFull StarFull StarFull StarWater Pump Gasket
by Jack from Valiant, Oklahoma on July 24, 2014
fit worked thanks
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Full StarFull StarFull StarFull StarFull Stargasket's
by Kevin from Wellsville, Ohio on May 27, 2011
great price, quality shipping !
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Average Customer Review for Water Pump Insert Cup - 18-3114 - Sierra
Full StarFull StarFull StarFull StarFull Star Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull StarReview 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 Based On 3 Reviews | Write Review
Full StarFull StarFull StarFull StarFull StarWrong 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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Full StarFull StarFull StarFull StarFull Stargreat parts
by Jay from Victor, Montana on August 12, 2013
great fit nice parts !
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Full StarFull StarFull StarFull StarEmpty StarMy 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
Full StarFull StarFull StarFull StarFull Star Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull Starworks
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
Full StarFull StarFull StarFull StarFull Star Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull StarO-Ring - Sierra
by Carter from North Plains, Oregon on October 10, 2011
Fits perfect.
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Average Customer Review for Water Pump Impeller - 18-3017 - Sierra
Full StarFull StarFull StarFull StarFull Star Based On 20 Reviews | Write Review
Full StarFull StarFull StarFull StarFull StarIt 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 StarFits like a glove
by Daniel from Akron, Ohio on April 25, 2015
The product fit my 1977 115hp Mercury perfectly
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Full StarFull StarFull StarFull StarFull StarFirst time costumers
by Jesus from San Antonio, Texas on April 24, 2015
Different brand pomp
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Full StarFull StarFull StarFull StarFull StarGood
by Carrie from Kingsley, Iowa on September 05, 2014
Fast shipping and product was great.
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Full StarFull StarFull StarFull StarFull Starimpeller
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 StarCustomer 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 Starwater 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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Full StarFull StarFull StarFull StarFull Starimpellor
by Van from Ravenna, Ohio on July 09, 2013
excellent and fast service
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Full StarFull StarFull StarFull StarEmpty Starproduct 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 StarWater 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 StarGood
by Kurt from Temple, Texas on July 04, 2012
just as described
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Full StarFull StarFull StarFull StarFull Starwater 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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Full StarFull StarFull StarFull StarFull Starright part
by Les from Republic, Missouri on February 26, 2012
fits fine fast shipping
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Full StarFull StarFull StarFull StarFull StarPerfect 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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Full StarFull StarFull StarFull StarFull Starimpeller
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 Starwater 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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Full StarFull StarFull StarFull StarFull Staralpha impeller
by Kevin from Wellsville, Ohio on May 27, 2011
Great quality,price shipping
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Full StarFull StarFull StarFull StarFull StarQuick 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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Full StarFull StarFull StarFull StarFull StarReview 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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Full StarFull StarFull StarFull StarFull Star Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull Stareasy 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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Average Customer Review for Sierra Mercury Seal - 18-2013 - Sierra
Full StarFull StarFull StarFull StarFull Star Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull StarPerfect 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 Base - 18-3420 - Sierra
Full StarFull StarFull StarFull StarFull Star Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull Star1988 Mercruiser 3.0 L
by Dawn from Union Gap, Washington on June 15, 2013
Works great!
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Average Customer Review for Water Pump Housing - 18-3116 - Sierra
Full StarFull StarFull StarFull StarFull Star Based On 1 Review | Write Review
Full StarFull StarFull StarFull StarFull Stargreat 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:
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"
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Question & Answer Guidelines
This product ships in 1 to 3 business days.
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Most products and orders leave our warehouse in 1 business day. However, select items may take more processing time. Alaska and Hawaii orders please add 1 additional warehouse processing day.
Standard Shipping Policies
Savings Sale Price: $3.59
Save: $1.49
(29% Off $5.08)
Part # 18-2914-9 ValueShip™ Eligible
Replaces OEM part #
  • MERCURY MARINE 27-85608-1
Package of 2
Savings Sale Price: $6.29
Save: $1.20
(16% Off $7.49)
Part # 18-3114 ValueShip™ Eligible
Hurry! Only 1 left in stock
Replaces OEM part #
  • MERCURY MARINE 48752T
  • MERCURY MARINE 48752
Part of 18-3116 Housing
Savings Sale Price: $4.49
Save: $0.57
(11% Off $5.06)
Part # 18-3109 ValueShip™ Eligible
Replaces OEM part #
  • MERCURY MARINE 23-29804T
  • MERCURY MARINE 23-29804
Use with 18-3116 Housing
Your Price: $3.48
Save: $2.02
(36% Off $5.50)
Part # 18-2919-9 ValueShip™ Eligible
Hurry! Only 1 left in stock
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Replaces OEM part #
  • MERCURY MARINE 27-42631-1
Package of 2
Savings Sale Price: $3.59
Save: $1.49
(29% Off $5.08)
Part # 18-2915-9 ValueShip™ Eligible
Replaces OEM part #
  • MERCURY MARINE 27-858524
  • MERCURY MARINE 27-85609-1
Package of 2
Savings Sale Price: $1.79
Save: $1.48
(45% Off $3.27)
Part # 18-7426-9 ValueShip™ Eligible
Dimensions ( in )
I.D. .740
Width .310

Replaces OEM part #
  • MERCURY MARINE 25-30271
Savings Sale Price: $13.49
Save: $6.33
(31% Off $19.82)
Part # 18-3017 ValueShip™ Eligible
Replaces OEM part #
  • CHRYSLER FORCE 694065
  • CHRYSLER FORCE 47-F694065
  • CHRYSLER FORCE 47-803631T
  • MERCURY MARINE 47-89984T4
  • MERCURY MARINE 47-89984
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
Savings Sale Price: $2.69
Save: $0.54
(16% Off $3.23)
Part # 18-3110 ValueShip™ Eligible
Replaces OEM part #
  • MERCURY MARINE 26-38970
  • Part of 18-3116 Housing
Mercury Marine 12-36001 replacement parts
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Save: $1.18
(39% Off $2.97)
Part # 18-4270-9 ValueShip™ Eligible
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Replaces OEM part #
  • MERCURY MARINE 12-36001
Package of 2
Savings Sale Price: $7.83
Save: $5.73
(42% Off $13.56)
Part # 18-2013 ValueShip™ Eligible
Shaft Size - 0.875"
Outer Diameter - 1.250"
Width - 0.188"

Replaces OEM part #
  • MERCURY MARINE 26-16977
Savings Sale Price: $23.39
Save: $7.57
(24% Off $30.96)
Part # 18-3420 ValueShip™ Eligible
Replaces OEM part #
  • MERCURY MARINE 46-44292A3
Mercury Marine 12-29245 replacement parts
Savings Sale Price: $1.79
Part # 18-4275 ValueShip™ Eligible
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Replaces OEM part #
  • MERCURY MARINE 12-29245
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Save: $14.55
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Part # 18-3116 ValueShip™ Eligible
Replaces OEM part #
  • MERCURY MARINE 46-96148T
  • MERCURY MARINE 46-96148A1
Savings Sale Price: $8.74
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Part # 18-2014 ValueShip™ Eligible
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Shaft Size - 0.875"
Outer Diameter - 1.500"
Width - 0.312"

Replaces OEM part #
  • MERCURY MARINE 26-89238
Your Price: $4.20
Save: $4.60
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Part # 18-7158-9 ValueShip™ Eligible
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Dimensions ( in )
I.D. .740
Width .100

Replaces OEM part #
  • OMC 310585
  • MERCURY MARINE 25-30613
  • OMC 310967
Savings Sale Price: $5.64
Save: $6.91
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Part # 18-7176-9 ValueShip™ Eligible
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Dimensions ( in )
I.D. 2.160
Width .100

Replaces OEM part #
  • CHRYSLER FORCE 25-F74305
  • MERCURY MARINE 25-90011
Savings Sale Price: $4.49
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Part # 18-3117 ValueShip™ Eligible
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Replaces OEM part #
  • MERCURY MARINE 32435
For #1 units thru S/N D494568
Mallory Water Pump Gasket 9-60031
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Part # 9-60031 ValueShip™ Eligible
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Replaces Original Equipment Manufacturer(OEM):Mercury
Replaces Original Equipment Manufacturer # (OEM #):27-42631-1
Fits Application:4 & 6 cyl. OB & Mercruiser
Mallory Cup, Stainless Steel 9-43502
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Save: $2.36
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Part # 9-43502 ValueShip™ Eligible
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Replaces GLM #:12810
Replaces Original Equipment Manufacturer(OEM):MERCURY (2)
Replaces Original Equipment Manufacturer # (OEM #):48752
Fits Application:Merc Outboards
Mallory Plate, Impeller 9-43400
Savings Sale Price: $3.56
Save: $2.12
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Part # 9-43400 ValueShip™ Eligible
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Replaces GLM #:12510
Replaces Original Equipment Manufacturer(OEM):MERCURY (5)
Replaces Original Equipment Manufacturer # (OEM #):32435
Fits Application:Merc Outboards
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