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Complete Water Pump Kit

#1 Units with plastic flush screw in gear housing 2495186-2763441 18-3321
#1 Units (Except MR-ALPHA) w/o flush screw in gear housing 2763442-6854392 18-3317 (1)
MR/ALPHA I 6854393-D594568 18-3320
ALPHA I - Generation II D494569 & ABOVE 18-3147
Notes:
  • (1) : Models which have been retro-fitted with an Alpha style lower unit (no pre-load pin in top of driveshaft) must use Alpha style parts (18-3320 and 18-3420)
Your Price: $55.89
Save: $15.60
(21% Off $71.49)
Part # 18-3318 2nd Day Air for $2 More Eligible
Hurry! Only 1 left in stock
No Reviews  |  Write Review  |  Ask Question
Replaces OEM part #
  • MERCURY MARINE 47-59362Q08
Fits: All Bravo (2 Piece Body)
Mercury Water Pump Repair Kits
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Representative Photo only.
Your Price: $50.65
Save: $19.34
(27% Off $69.99)
Part # 18-3570 2nd Day Air for $2 More Eligible
Replaces OEM part #
  • MERCURY MARINE 817275A1
  • MERCURY MARINE 817275A2

Contains:
    ( 1 ) NSS Water Pump Housing
    ( 1 ) 18-3056 Impeller - replaces O.E.# 47-430262
    ( 1 ) 18-2599 Face Seal & Tool - replaces O.E.# 26-816575A2
    ( 1 ) 18-3122 Impeller Plate - replaces O.E.# 817276
Mercury Marine 817275A2 Application
  • 40 (4 stroke)(4cyl) Bigfoot, OT228405 & Up
  • 50 (4 stroke) 935cc Big Foot, OG231123-OT178499
  • 50 (4 stroke) 996cc Big Foot, OT178500 & Up
  • 60 (3 Cyl.) Bigfoot, OD000750 & Up
  • 60 (4 stroke) Bigfoot, OT178500 & Up
  • 65 Jet, OC283222 & Up
  • 70 (3 cyl.), OA996142 & Up
  • 75 (3 cyl.), OC222000 & Up
  • 75 (4 Stroke), OG960500 & Up
  • 80 (3 cyl), OA996142 & Up
  • 80 Jet, OD283222 & Up
  • 90 (3 cyl.), OA996142 & Up
  • 90 (4 stroke), OG960500 & Up
  • 100 (4 cyl.), OB209468 & Up
  • 115 (4 cyl.), OC100000 & Up
  • 125 (4 cyl.), OD283222 & Up
Mercury Marine 817275A1 Application
  • 45 (4 stroke) Bigfoot Bodensee, OG231123 & Up
  • V-200 DFI (3.0L), OG386496-OG589999
  • V-200 DFI (3.0L), OG590000 & Up
  • V-225 (3.0L) Carb. & EFI, OD280813 & Up
  • V-225 DFI, OG590000 & Up
  • V-250 (3.0L) EFI, OG129222 & Up
Your Price: $62.66
Save: $27.33
(30% Off $89.99)
Part # 18-3150 2nd Day Air for $2 More Eligible
Replaces OEM part #
  • MERCURY MARINE 46-807151A14
For: Bravo
Your Price: $22.39
Save: $14.10
(38% Off $36.49)
Part # 18-3309 2nd Day Air for $2 More Eligible
For: Bravo

Kit Contains:
  • (1) 18-3350 Wear Plate - replaces O.E.# 94576
  • (1) 18-3351 Wear Plate - replaces O.E.# 94916
  • (1) 18-3087 Impeller - replaces O.E.# 47-59362
  • (2) 18-0386 Body Gasket - replaces O.E.# 27-94914
  • (1) 18-0916 Water Pump Gasket - replaces O.E.# 27-805215-1
Your Price: $25.73
Save: $14.81
(36% Off $40.54)
Part # 18-3309D 2nd Day Air for $2 More Eligible
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For: Bravo

Kit Contains:
  • (1) 18-3350 Wear Plate - replaces O.E.# 94576
  • (1) 18-3351 Wear Plate - replaces O.E.# 94916
  • (1) 18-3087 Impeller - replaces O.E.# 47-59362
  • (2) 18-0386 Body Gasket - replaces O.E.# 27-94914
  • (1) 18-0916 Water Pump Gasket - replaces O.E.# 27-805215-1
Your Price: $37.28
Save: $15.71
(29% Off $52.99)
Part # 18-3317 2nd Day Air for $2 More Eligible
Kit Contains:
  • (1) 18-3109 Water Tube - replaces O.E.# 23-29804
  • (1) 18-3017 Impeller - replaces O.E.# 47-89984
  • (1) 18-3116 Housing - replaces O.E.# 46-96148A1
  • (1) 18-2919 Water Pump Base to Gear Housing Gasket - replaces O.E.# 27-42631-1
  • (1) 18-3417 Water Pump Base - replaces O.E.# 46-57234A1
  • (1) 18-3110 Grommet - replaces O.E.# 26-38970
  • (2) 18-2945 Gear Hsg. Drain Screw Gasket - replaces O.E.# 12-19183
  • (1) 18-2826 Water Pump Base to Gear Housing Gasket - replaces O.E.# 27-85610-1
  • (1) 18-2914 Lower Water Pump to Wear Plate Gasket - replaces O.E.# 27-85608-1
  • (1) 18-2915 Upper Water Pump to Wear Plate Gasket - replaces O.E.# 27-85609-1
  • (1) 18-2944 Seal Ring - replaces O.E.# 26-45577
  • (1) 18-3117 Plate - replaces O.E.# 32435
  • (1) 18-7158 O-Ring - replaces O.E.# 25-30613
  • (1) 18-7162 O-Ring - replaces O.E.# 25-33145
  • (1) 18-7173 O-Ring - replaces O.E.# 25-30224
  • (1) 18-7176 O-Ring - replaces O.E.# 25-90011
  • (1) 18-2801 Water Pump Gasket - replaces O.E.# 27-32438
  • (1) 18-7196 O-Ring - replaces O.E.# 25-38099
  • (1) 18-7426 O-Ring - replaces O.E.# 35-30271
  • (1) 18-2919 Water Pump Gasket - replaces O.E.# 27-46231-1
Your Price: $34.37
Save: $15.12
(30% Off $49.49)
Part # 18-3320 2nd Day Air for $2 More Eligible
Kit Contains:
  • (1) 18-3109 Water Tube - replaces O.E.# 23-29804
  • (1) 18-3017 Impeller - replaces O.E.# 47-89984
  • (1) 18-3116 Housing - replaces O.E.# 46-96148A1
  • (1) 18-3420 Water Pump Base - replaces O.E.# 46-44292A3
  • (1) 18-2919 Water Pump Base to Gear Housing Gasket - replaces O.E.# 27-42631-1
  • (1)18-3110 Grommet - replaces O.E.# 26-38970
  • (2) 18-2945 Gear Housing Drain Screw Gasket - replaces O.E.# 12-19183
  • (1) 18-2826 Water Pump Base to Gear Housing Gasket - replaces O.E.# 27-85610-1
  • (1) 18-2914 Lower Water Pump to Wear Plate Gasket - replaces O.E.# 27-85608-1
  • (1) 18-2915 Upper Water Pump to Wear Plate Gaskte - replaces O.E.# 27-85609-1
  • (1) 18-2944 Seal Ring - replaces O.E.# 26-45577
  • (1) 18-3117 Plate - replaces O.E.# 32435
  • (1) 18-7158 O-Ring - replaces O.E.# 25-30613
  • (1) 18-7162 O-Ring - replaces O.E.# 25-33145
  • (1) 18-7173 O-Ring - replaces O.E.# 25-30224
  • (1) 18-7176 O-Ring - replaces O.E.# 25-90011
  • (1) 18-2801 Water Pump Gasket - replaces O.E.# 27-32438
  • (1) 18-7196 O-Ring - replaces O.E.# 25-38099
  • (1) 18-7426 O-Ring - replaces O.E.# 35-30271
Your Price: $60.22
Save: $27.61
(31% Off $87.83)
Part # 18-3321 2nd Day Air for $2 More Eligible
Kit Contains:
  • (1) 18-3109 Water Tube - replaces O.E.# 23-29804
  • (1) 18-3017 Impeller - replaces O.E.# 47-89984
  • (1) 18-3116 Housing - replaces O.E.# 46-96148A1
  • (1) 18-3421 Water Pump Base - replaces O.E.# 46-48748A1
  • (1) 18-2919 Water Pump Base to Gear Housing Gasket - replaces O.E.# 27-42631-1
  • (1) 18-3110 Grommet - replaces O.E.# 26-38970
  • (2) 18-2945 Gear Hsg. Drain Screw Gasket - replaces O.E.# 12-19183
  • (1) 18-2826 Water Pump Base to Gear Housing Gasket - replaces O.E.# 27-85610-1
  • (1) 18-2914 Lower Water Pump to Wear Plate Gasket - replaces O.E.# 27-85608-1
  • (1) 18-2915 Upper Water Pump to Wear Plate Gasket - replaces O.E.# 27-85609-1
  • (1) 18-2944 Seal Ring - replaces O.E.# 26-45577
  • (1) 18-3117 Plate - replaces O.E.# 32435
  • (1) 18-7158 O-Ring - replaces O.E.# 25-30613
  • (1) 18-7162 O-Ring - replaces O.E.# 25-33145
  • (1) 18-7173 O-Ring - replaces O.E.# 25-30224
  • (1) 18-7176 O-Ring - replaces O.E.# 25-90011
  • (1) 18-2801 Water Pump Gasket - replaces O.E.# 27-32438
  • (1) 18-7196 O-Ring - replaces O.E.# 25-38099
  • (1) 18-7426 O-Ring - replaces O.E.# 35-30271
Your Price: $95.46
Save: $39.53
(29% Off $134.99)
Part # 18-3147 2nd Day Air for $2 More Eligible
Replaces OEM part #
  • MERCURY MARINE 817275T4
  • MERCURY MARINE 817275K05
For: Gen ll-Lower s/n D469859 and Up

Contains:
  • (1) 18-2354 Carrier Seal
  • (1) 18-3056 Impeller
  • (1) 18-3122 Impeller Plate
  • (1) 18-3293 Impeller Key
  • (2) 18-7420 O-Ring
  • (1) 18-2944 Seal Ring Gasket
  • (1) 18-2599 Face Seal and Tool
  • (1) 18-2564 Water Pump Base to Face Plate Gasket
  • (1) 18-2566 Face Plate to Water Pump Cover Gasket
Your Price: $89.78
Save: $57.21
(38% Off $146.99)
Part # 18-3155 2nd Day Air for $2 More Eligible
Replaces OEM part #
  • MERCURY MARINE 47-72774A89
Fits: Bravo Seawater pump w/ 2 piece housing
Your Price: $34.21
Save: $20.78
(37% Off $54.99)
Part # 18-3077 2nd Day Air for $2 More Eligible
Neoprene
Replaces OEM part #
  • JABSCO 920-0001
  • OBERDORFER C7441
  • JOHNSON PUMP 09-1028
  • JOHNSON PUMP 09-102B
  • SHERWOOD PUMP 18200
  • VOLVO 875593
  • VOLVO 875593-6
  • VOLVO 877061-2
For:
  • AQ 30, 31, 40, 41, AQD 19, 27, 29, 32, KAD/KAMD 42A, B, P, MD, 19, 27, 29, 32, TAMD 60A, B, C
Your Price: $58.47
Save: $35.52
(37% Off $93.99)
Part # 18-3089 2nd Day Air for $2 More Eligible
Replaces OEM part #
  • JOHNSON PUMP 09-45825
For:
  • 18-3587 Pump
Your Price: $83.81
Save: $18.18
(17% Off $101.99)
Part # 18-3037 2nd Day Air for $2 More Eligible
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Nitrile
Replaces OEM part #
  • JABSCO 836-0003
  • JABSCO 826-0003
  • JOHNSON PUMP 09-1029B9
  • VOLVO 875736-1
For:
  • AQ, AD,40,A, B, TAMD 40 A, B, TAMD 61-62 A, 71-72A
Your Price: $72.44
Save: $17.27
(19% Off $89.71)
Part # 18-3038 2nd Day Air for $2 More Eligible
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Nitrile
Replaces OEM part #
  • JABSCO 920-0003
  • JABSCO 17937-0001
  • JOHNSON PUMP 09-1028B9
  • VOLVO 877061-2
For:
  • AQ 30, 31, 40, 41 AQD 19, 27, 29, 32, KAD/KAMD 42A, B, P, MD, 19, 27, 29, 32, TAMD 60A, B, C
 
Your Price: $52.93
Save: $8.82
(14% Off $61.75)
Part # 60366Q1
No Reviews  |  Write Review  |  Ask Question
Mercury/ MerCruiser water pump upper repair kit. Check application data before ordering.
 
Your Price: $70.64
Save: $11.77
(14% Off $82.41)
Part # 99157T2
No Reviews  |  Write Review  |  Ask Question
Mercury/ MerCruiser water pump upper repair kit. Check application data before ordering.
Sierra
Mallory and Sierra water pump repair kits for Mercruiser engines.
Average Customer Review for Water Pump Kit - 18-3570 - Sierra
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Based On 4 Reviews | Write Review
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Mariner water pump
by William from Lakeville, Minnesota on September 27, 2015
Parts sent don't fit my motor. (SN OD250701) Impeller bore is too large. Housing is too short.
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slow shipping
by James from Berrien Springs, Michigan on May 30, 2014
Told order would ship on 27 received on 28th. Shipped on 28th, not yet received.
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water pump
by Yves from st-Gilbert, Quebec on May 15, 2012
you doing just a awsome service i never expect to be served quick like that thank you very much i am very happy
(2 of 2 people found this review helpful)
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Mercury Water Pump Rebuild
by Michael from Mars Hill, North Carolina on January 05, 2012
Parts as described. Everything fit perfectly.
(8 of 8 people found this review helpful)
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Average Customer Review for Water Pump Kit - 18-3150 - Sierra
Full StarFull StarFull StarFull StarFull Star
Based On 7 Reviews | Write Review
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Ok So Far
by Pat from Menasha, Wisconsin on June 30, 2016
You should at least give me a few weeks or months to use these parts. At present the boat ran for almost 15 minutes and the engines didn't overheat so the parts must be working. Is this the type of review you and your customers are looking for?
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Great kit!
by Jonathan from Mesa, Arizona on August 04, 2015
Everything fits perfectly on the Quicksilver pump body, no problems.
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Needed it fast and got it in 3 days
by Melvin from Independence, Kansas on June 07, 2015
great product
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Todd
by Todd from Ogden, Utah on June 14, 2014
worked great fit just like the old one
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Sierra Water Pump/Impeller kit
by Barry from Corona, California on July 02, 2013
Great service, excellent product, and great price. Part was delivered as advertised and on time
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pump kit
by William from Smyrna, Delaware on June 04, 2013
Perfect
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Water pump
by Barry from Gilford, Ontario on September 30, 2012
I have not had to use this water pump. I purchased it to have a spare. The order and delivery was very fast and direct. I would recommend parts from iboats.
(2 of 2 people found this review helpful)
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Average Customer Review for Water Pump Kit - 18-3317 - Sierra
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Based On 15 Reviews | Write Review
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Wate pump
by Ron from Gardnerville, Nevada on July 08, 2016
Great product. Everything was there and it fit great. Easy replacement.
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sierra water pump kit
by Arthur from Mount Pleasant, South Carolina on July 07, 2016
Parts were identical to quicksilver parts previously used.
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wtr pump kit
by Robert from Bakersfield, California on March 10, 2016
Worked as should, timely delivery thanks
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Part does not fit
by Ed from Essex jct, Vermont on July 27, 2015
There are two different size bases for this water pump.The dealer knew exactly who I bought this from. He said they never ask what size the base was on old pump. The one I got was smaller than then old one and leaked outdrive grease when installed. The two different size bases are close enough that it is hard to tell there is a size difference unless held close together. I ended up taking outdrive to dealer to learn this at a cost of $135.00.
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Thank you
by Marc from Kenosha, Wisconsin on July 07, 2015
Thank you
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exactly what I needed
by Stacy from Grovertown, Indiana on October 03, 2014
I'm new to the boating world. iboats made it easy for me to find the correct part I needed for my '78 Viking deck boat.
(1 of 1 people found this review helpful)
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Good Product
by Jason from Burleson, Texas on September 05, 2014
Good Product, fast shipping.
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great product
by Darrell from Elizabethtown, Indiana on July 13, 2014
Quick to place order and product was shipped quick.
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easy
by Mark from Washington, North Carolina on August 31, 2013
great parts
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water pump
by Ray from Springdale, Arkansas on August 07, 2013
Your people are supper, Especially Leann. Always the right part, faster than local marine shops, and 1/2 the price. Thank you Ray Schein
(1 of 1 people found this review helpful)
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water pump kit
by Steven from Cloquet, Minnesota on June 01, 2013
top quality
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water pump
by Jerrold from East Palestine, Ohio on May 29, 2013
pump works awesome!!runs cool all day thanks alot
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Mercury XR6 water pump kit
by Darrell from Mt. Vernon, Illinois on March 18, 2013
Everything needed to replace complete water impeller components. Great kit.
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water pump kit
by Timothy from Canfield, Ohio on August 06, 2012
Good kit,correct fit and good quality, shipped fast
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great kit
by Aron from Avondale, Arizona on June 08, 2011
great replacement pump
(0 of 3 people found this review helpful)
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Average Customer Review for Sierra 18-3320 Water Pump Kit
Full StarFull StarFull StarFull StarHalf Star
Based On 14 Reviews | Write Review
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Nice kit
by Donald from Campbell, Ohio on June 19, 2015
Everything you need to rebuild your mercruiser water pump.
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Water Pump Kit
by Norman from Baldwinsville, New York on May 26, 2015
Great kit with all the pieces I needed at a fantastic price!
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Not bad
by Jarold from Henderson, Nevada on October 21, 2014
While it did come with all the gaskets you could possibly want, the base however was to big to fit in the MR/Alpha housing. Not sure when the size change occurred but if you order this unit be sure to save the old pump housing base to reuse or you will be screwed!
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fast shipping the item is a good quality.
by Robert from Hudson, Florida on October 19, 2014
very pleased with IBoats parts catalog.the item was very easy to install.I will be ordering from IBoats in the future. I need to do a transom seal next.
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good service and fast delivery
by Paul from Guelph, Ontario on October 16, 2014
I received the right part and iboats was fast to ship it out. It would be great if they offered UPS delivery all the way to my door rather than canada post after it left customs
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Water pump kit
by Marc from Burley, Idaho on July 04, 2014
Boat runs great now , no more over heating .
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water pump kit
by Joel from Winnabow, North Carolina on July 27, 2013
got my parts on time and works great ,no problems
(1 of 1 people found this review helpful)
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Mercruiser water pump
by Dawn from Union Gap, Washington on June 17, 2013
Thank you for having a complete kit with the base. This made it easier to have all matching parts. Love that everything works great in the boat now as Iboats had everything we needed.
(1 of 1 people found this review helpful)
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Fits Well
by Victor from Bellaire, Ohio on May 24, 2013
This is a complete kit for a pre Gen 2 Alpha outdrive. Several O-rings are included. Make sure to use the correct one on the lower pump plate. I had to use the thinner one.
(1 of 1 people found this review helpful)
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merc. 224 cid/165 hp 4 cyl.
by Siah from Morehead, Kentucky on April 25, 2013
this is an exact fit. great quality. no instructions ,so pay attention when you disassemble and double check for any debris from old impellor and clean well.
(1 of 1 people found this review helpful)
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Excellent product
by Otis from Land O' Lakes, Florida on September 25, 2011
The water pump itself is an excellent kit, there needs to be some information included regarding the "extra" parts that are not needed in all cases.
(4 of 4 people found this review helpful)
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Water pump kit
by John from Eagle River, Wisconsin on August 29, 2011
I am not a boat mechanic and the name of this item confused me. I would have called it "impeller and housing with gaskets" It installed easily and all the correct parts were included. Right price, right part.
(1 of 1 people found this review helpful)
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Great for DIY
by Timothy from Winchester, California on July 22, 2011
Kit was a bit confusing because it came with gaskets not used on my Alpha Gen. 1 stern-drive and no instructions, but everything went together perfectly and the boat is seaworthy again.
(2 of 2 people found this review helpful)
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Review for Sierra 18-3320 Pump Kit
by a Customer on September 13, 2009
(2 of 6 people found this review helpful)
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Based On 2 Reviews | Write Review
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Water pump
by Steven from Richmond, Kentucky on June 03, 2013
Worked good
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Awesome
by Zach from West Valley, Utah on September 10, 2012
Came with everything I needed to completely rebuild my water pump. 1975 Pre-Alpha.
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Average Customer Review for Sierra 18-3147 Water Pump Kit
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Based On 3 Reviews | Write Review
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water pump was as described it worked great.
by Gerome from Robards, Kentucky on August 07, 2015
water pump was as described it worked great.
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Great Service fast ship
by David from Nantucket, Massachusetts on July 31, 2012
Ordered and recieved parts hassle free super fast shipper. I actually just placed my second order with more to come in the future. Thanks for all your help
(0 of 1 people found this review helpful)
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Water pump kit
by Lamont from Woodriver, Illinois on May 29, 2012
Very fast service and shipping, as always! Iboats is always the first place that I go for parts.
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Average Customer Review for Water Pump Repair Kit - 18-3155 - Sierra
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Based On 1 Review | Write Review
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water pump
by Oscar from Miami, Florida on July 03, 2012
excellent product great service
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Average Customer Review for Water Pump Kit - 18-3077 - Sierra
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Based On 1 Review | Write Review
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non volvo impellers beware
by Robert from Livingston, California on August 16, 2012
Never again will I substitute another brand impeller to save money.This inferior product never made it to the water.When I started the engine WITH WATER HOOKED UP the impeller housing reached 300 F.After replacing the old VOLVO impeller it ran at 72F.This was an expensive lesson.
(1 of 7 people found this review helpful)
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Q:
Will this fit my 1977 120/140 mercruiser? Serial Numbers worn off.?
A:
This should work for your application.


Q:
Looking for a water pump kit for a Merccruiser 120 ser# from the out drive is 2369097. And do your kits come with the cup in the housing of the water pump.?
A:
You will need 18-3321. Cup is in the housing in the kit.


Q:
Will this fit a 1979 merc 165 serial 5457007 165r?
A:
Yes this is correct for your application.


Q:
Will this fit my 84 mercruiser 228HP?
A:
We will need serial number to confirm the proper water pump kit.


Q:
Will this fit Mercury 1997 200 xl serial #0g531029?
A:
This water pump will not work with your engine. You need 18-3319.


Q:
This will fit 86' alpha 1 Gen 1?
A:
Repair kit 18-3348 is for the Alpha 1 Gen 1.


Q:
Will it fit a 1984 Merc cruiser alpha1, 260 v8 GM engine?
A:
No this will not work, you will need 18-3320.


Q:
Will this fit a 1989 Mariner 175?
A:
Yes this will work for your engine.


Q:
Will this work with my 1975 850 Thunderbolt ?
A:
This is a aftermarket part, you'll need to call or email us with your engine serial number so we can look up the diagram of your engine to see if this matches to your OEM part number from your diagram.


Q:
Will this fit on a 1991 sea Ray 170 3.0?
A:
No you will need 18-3320.


Q:
How do I find the yamaha vs. sierra crossover? I need a Yamaha 61A-W0078-A3-00 water pump kit?
A:
Here is the OEM Yamaha water pump kit, number 61A-W0078-A3-00: http://www.iboats.com/Water-Pump-Repair/dm/view_id.1305339


Q:
Dose this kit include the shaft seal ?
A:
Yes it does.


Q:
I have a 2000 mercury 125hp 4cyl carb motor. Serial # starts OT160625. Will this fit, it looks as though it will.?
A:
Yes, this water pump kit will fit your motor.


Q:
I have 2002 4.3l with alpha1 sterndrive, is this the correct repair kit??
A:
This will work with your Alpha One Gen II outdrive. 18-3147 is complete kit: http://www.iboats.com/Water-Pump-Kit-18-3147-Sierra/dm/view_id.172768


Q:
Will this work on 2013 60 horse 4 stroke?
A:
Hi- Yes this Sierra 18-3570 impeller kit will work for a 2013 four stroke 60hp engine


Q:
I have an ALFA1 SN# 0B662125 is the Sierra 18-3320 the correct part for me. What does 'MR' stand for?
A:
This would be the best replacement for your Mercruiser engine. MR generally stands for Mercury or Mercruiser.


Q:
Have 1988 5L. 305 c.i. alpha 1 ,is this the correct kit ?
A:
Yes the Alpha 1 (pre Gen II) went from 1983-1990. So this kit will work for that outdrive.


Q:
I have a 1987 454ci mercruiser, w/ alpha1, Gen1outdrive, what impeller kit do i need?
A:
This is the water pump kit you need, 18-3320.


Q:
I have an 0f516249. Is this the right kit?
A:
You need 18-3570 (upper pump kit) or 18-3147.


Q:
I have serial 0f519249. Is this the right kit?
A:
You need 18-3570 (upper pump kit) or 18-3147.


Q:
Do I need the 18-3319 or 18-3320 for my Mercruiser SN: 0B429113?
A:
18-3320 is called for Mercruiser MR/Alpha outdrive. MR/Alpha ranges from 6854393-D594568.


Q:
I have a 2000 Searay 5.0 Mercruser alpha 1 Which impeller is right?
A:
You will need 18-3147 for the kit. 18-3056 is the correct impeller.


Q:
In reading some of the reviews I noticed that several comments were made in regards to the water pump base size being incorrect. When ordering how do we make sure I receive the correct base. It seems that either will mount but if wrong will fail. I am wanting a complete water pump for alpha 1 gen. 2 s#0D627752?
A:
This is not correct for your outdrive. 18-3147 is the correct kit. You do not really have a base necessarily. You have the housing and then a face plate to mount it to. The 18-3147 is for sure the correct kit for your outdrive though.


Q:
I have a alpha 1 out drive made in 1988 wich kit do i buy?
A:
This is not the right kit. Alpha 1 Gen II motors began in 1991. MR/Alpha outdrives were from 83-90. So 18-3320 is the correct kit for your outdrive: http://www.iboats.com/Water-Pump-Kit-18-3320-Sierra/dm/view_id.187582


Q:
I have an alpha I drive serial?
A:
Part 18330 will work for an MR/ALPHA 1. Part 18-3147 will for for an ALPHA 1-Generation ll.


Q:
My serial number is 0d363567, which kit do I need?
A:
You would need the 18-3316, which would come with the base.


Q:
I have a metal flush screw on the gear housing and i ordered a 18-3317 water pump kit. It don't have the thread for the screw. what kit do I need?
A:
We cannot match it up this way. We will need to know the engine application to even begin to confirm with Sierra. Let us know if you can provide that.


Q:
What is the impeller part number (just impeller)?
A:
Unfortunately, we are unable to look up parts individually, but if you have your specs of your engine, you can call in and we can provide the number for just the impeller. The phone number to call is located at the top of the screen.


Q:
Is this the parts for 0C832966?
A:
No, the one you would need is the 18-3317.


Q:
What is the differance 18-3309 and183309-d?
A:
No difference in parts it contains. The 18-3309D is a display package.


Q:
Will this fit on my 2000 Alpha 1 Gen II SN OL465337?
A:
Yes this will work for your outdrive.


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