Upper Water Pump Kit
Item No. 314490
Upper Water Pump Kit is rated
out of
5 by
11.
Images

Details
https://www.overtons.com/upper-water-pump-kit-314490.html
Upper Water Pump Kit
$33.24
$34.99
Compare at $44.99
Save $1.75
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5% Off
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Additional Information
Features
This kit contains all the parts needed to replace the upper water pump - including housing, impeller, plate, seal, gaskets, and O-rings.
Replacement kit fits:
Mercruiser - Gen One Outdrives, serial #2495186-6854392
MR/Alpha I, serial #6854393-D594568
Mercury - 75 - 85 hp, 4 cylinder
90 and 115 hp, 6 cylinder
140 hp, serial #4865678 and up
150 hp, serial #4121435 - 4868647
V135 thru V225 and XR4
Mariner - 80 hp, 4 cylinder
90 and 115 hp, 6 cylinder
135 thru 220 hp and Mag II
Show moreShow less
Replacement kit fits:
Mercruiser - Gen One Outdrives, serial #2495186-6854392
MR/Alpha I, serial #6854393-D594568
Mercury - 75 - 85 hp, 4 cylinder
90 and 115 hp, 6 cylinder
140 hp, serial #4865678 and up
150 hp, serial #4121435 - 4868647
V135 thru V225 and XR4
Mariner - 80 hp, 4 cylinder
90 and 115 hp, 6 cylinder
135 thru 220 hp and Mag II
- Contains parts needed to replace upper water pump:
- Housing, impeller, plate, seal, gaskets, & o-rings
Specs
Unit Weight | 0.75 lb |
---|---|
Brand | Sierra |

WARNING: Cancer and Reproductive Harm
For more information, go to www.P65Warnings.ca.gov/product.
Reviews
Q & A
This kit contains all the parts needed to replace the upper water pump - including housing, impeller, plate, seal, gaskets, and O-rings.
Replacement kit fits:
Mercruiser - Gen One Outdrives, serial #2495186-6854392
MR/Alpha I, serial #6854393-D594568
Mercury - 75 - 85 hp, 4 cylinder
90 and 115 hp, 6 cylinder
140 hp, serial #4865678 and up
150 hp, serial #4121435 - 4868647
V135 thru V225 and XR4
Mariner - 80 hp, 4 cylinder
90 and 115 hp, 6 cylinder
135 thru 220 hp and Mag II
Show moreShow less
Replacement kit fits:
Mercruiser - Gen One Outdrives, serial #2495186-6854392
MR/Alpha I, serial #6854393-D594568
Mercury - 75 - 85 hp, 4 cylinder
90 and 115 hp, 6 cylinder
140 hp, serial #4865678 and up
150 hp, serial #4121435 - 4868647
V135 thru V225 and XR4
Mariner - 80 hp, 4 cylinder
90 and 115 hp, 6 cylinder
135 thru 220 hp and Mag II
- Contains parts needed to replace upper water pump:
- Housing, impeller, plate, seal, gaskets, & o-rings
Unit Weight | 0.75 lb |
---|---|
Brand | Sierra |

WARNING: Cancer and Reproductive Harm
For more information, go to www.P65Warnings.ca.gov/product.
Rated 5 out of
5
by
Alex from
Great Kit.
Great kit. Includes everything you need unless you want to change the base too.
Date published: 2014-05-14
Rated 5 out of
5
by
Rsg from
sierra quality
Quality product, universal kit
Date published: 2012-08-14
Rated 4 out of
5
by
Carl from
The quality looks good.
needed this replaced immediately and received 2 days after ordering.....Great
Date published: 2012-05-17
Rated 5 out of
5
by
Giffer from
Mercruiser Lower Unit
Product was what it was to be and works great only need the bottom section of the pump added with seal
Date published: 2011-06-12
Rated 3 out of
5
by
1952 Capri from
Does not fit Alpha 1 Gen 2
[...]. This pump is only for the Gen I. Also it only includes the upper casing, not the base.
Date published: 2011-05-09
Rated 5 out of
5
by
racer6 from
water pump kit
perfect
Date published: 2010-07-20
Rated 5 out of
5
by
bis from
great deal
This was a great deal couldn't beat the price anywhere i looked even for just the impeller without the housing. will be back next year for another.
Date published: 2010-06-07
Rated 4 out of
5
by
EVAN from
GOOD BUY...
GOOD BUY FOR THE MONEY AND EASY TO INSTALL!
Date published: 2010-04-28
I have a 1980 or 1981 Mercruiser MCM 260 serial#5925995. Will this kit work to replace the stern drive water pump? If not, which one do I need? Thank you
Please contact our Technical Team at 1-800-334-6541, with additional information.
Date published: 2017-08-31
i have a 83 searay with a 305 mercruiser will this fix it.I could barely read the serial number on the drive i believe it reads 6746696
Please contact our Technical Team at 1-800-334-6541, with additional information.
Date published: 2017-08-28
Will this fit 1984 gen one 260 mercruiser?
If your engine serial number is between 6854393 - 0D594568, then yes, this Upper Water Pump Kit will fit your engine.
Date published: 2016-09-09
will this fit a 1994 seapro mercruiser 3.0 alpha one. engine serial # 0F267810
No. The manufacturer suggest part number 18-3570 (Item # 900172) for your application.
Date published: 2016-07-21
Will this fit an Alpha One on Mercruiser serial # OB938266? This is a V8 inboard motor.
Yes. The Upper Water Pump Kit will fit your application. It is made for Mercruiser MR/ALPHA 1 serial numbers 6854393 - 0D594568.
Date published: 2016-06-30
Will this fit Mercury 75hp 4ST EFI Serial # IB485605?
No. This Upper Water Pump Kit will not fit your application based on your serial number. the manufacturer does not have a listing for your serial number.
Date published: 2016-06-03
1992 Bluefin Spectrum 1750 has a MERCRUISER Alpha One 3.0L inboard Engine number is OD 837715 wanted to know if this impeller kit would work for my boat
No. Based on the information that you provided, you will need Sierra Water Pump Kit, Sierra Part #18-3570 (Item # 900172).
Date published: 2016-05-04
Will this kit fit a 2007 Optimax 150?
Hello Dave, The Water Pump Kit should work for your Mercury Optimax 150 if the Serial numbers are between 4121435 - 4868647. Thank you, Steve
Date published: 2015-09-23