Water Pump Impeller Housing Kit for Mercruiser MR Alpha 1 Gen One '85-90 18-3320

Description

Water Pump Kit (Complete w/Base & Housing) for Mercruiser MR & Alpha Gen 1
GLM Part # 12120
New in box with warranty, complete water pump kit for the Mercruiser MR and Alpha I sterndrive.
There is some confusion about drives made in 1985 and 1986 as to which drive you have. If you do not know which drive you have, a #1 "R" drive or a later MR/Alpha drive you have to look at your engine serial number. If your serial number is BEFORE 6854393 it is an R it will use an early water pump kit UNLESS your lower unit has been updated at some time. If you can not identify a serial number, you can drop the lower unit.
If you have a pre-load pin on the top of the vertical shaft (see 3rd image) you have the earlier #1 or "R" drive & this is NOT the correct kit. If your vertical shaft does not have a pre-load pin, it is a MR or Alpha Gen 1 drive & this IS the correct kit.
The best way to be absolutely sure of the type of drive you have is to drop the lower unit & check to see if you have a preload pin or not.
This kit is NOT for the Generation II sterndrive which can be identified by a gear oil reservoir inside the boat.
Kit includes the impeller, wear plate, water tube, gaskets, o-rings, upper pump housing with water pump cup installed and the lower base with the pump seal installed. Please remember that the seal in the water pump base keeps water from the pump from entering your gearcase.
Replaces Sierra Part #:18-3320
Fits The Following Applications:
Model / HP
Serial #
Year
MR / Alpha One
6854393 - 0D594568
1985 - 1990
Water Pump Kit Contains:
1  Water Pump Base (Replaces Merc Part #: 46-44292A3)
1  Water Pump Housing (Replaces Merc Part #: 46-96148A1)
1  Water Pump Impeller (Replaces Merc Part #: 46-89984)
1  Water Tube Guide  (Replaces Merc Part #: 23-29804)
1  Pump Base to Gear Housing Gasket  (Replaces Merc Part #: 27-42631-1)
1  Pump Base to Gear Housing Gasket  (Replaces Merc Part #: 27-85610-1)
1  Pump Base to Gear Housing Gasket  (Replaces Merc Part #: 27-32438)
1  Impeller Wear Plate (Replaces Merc Part #: 32435)
1  Wear Plate Gasket - Lower  (Replaces Merc Part #: 27-85608-1)
1  Wear Plate Gasket - Upper  (Replaces Merc Part #: 27-85609-1)
1  Water Tube Grommet  (Replaces Merc Part #: 26-38970)
1  Oil Passage Seal  (Replaces Merc Part #: 26-45577)
2  Drain Screw Gaskets  (Replaces Merc Part #: 12-19183)
1  O-Ring  (Replaces Merc Part #: 25-30613)
1  O-Ring  (Replaces Merc Part #: 25-33145)
1  O-Ring  (Replaces Merc Part #: 25-30224)
1  O-Ring  (Replaces Merc Part #: 25-90011)
1  O-Ring  (Replaces Merc Part #: 25-38099)
1  O-Ring  (Replaces Merc Part #: 25-30271)
We are happy to help you select the proper replacement part for your application but we trust that you have the proper skills, tools and manuals to properly diagnose your particular engine. If you need to contact us in regards to a specific application question, please e-mail us. Please note, for questions asked via e-mail on weekends or holidays, we may not be able to respond until the next business day. Please include your engine model and year of manufacture when contacting us.
Contact Information
Address:
Wulffe Marine
7252-C Industrial Park Blvd.
Mentor, OH 44060
Shipping and Payment Policies
Calculated and Combined Shipping:
You may combine items into one package, and calculate the shipping cost based on the weight of the package. Calculated shipping uses eBay's shipping calculator. Enter your ZIP Code and the shipping cost is calculated according to your location. The weight of each item will be added together when you check out. Items must be purchased together for combined shipping, and items do not need to be the same. Please feel free to contact us with any questions about combined shipping.
Shipping for U.S. Sales:
Use eBay's shipping calculator to get shipping charges. We Ship via U.S.P.S. First Class Mail, U.S.P.S. Priority Mail or UPS. Note: UPS cannot deliver to a P.O. Box. Buyer pays shipping except if free shipping is offered. All Items that we have listed on eBay we have in stock and ready to ship. Items purchased and paid on Monday through Thursday will ship within 24 hours of the time item is paid for. All Items purchased and paid on Friday, Saturday and Sunday will ship the following Monday with the exception of holidays. Items purchased and paid on a holiday will ship the following business day. With this said we will do everything possible to ship all items the same day. Ohio residents pay 7.00% Ohio sales tax. Under no circumstances will items be shipped without payment received. If an incorrect address is given at the time of purchase and the item is undeliverable the shipping charges will not be refunded.
Please note:
While most (about 98%) of 1st Class packages arrive in a timely manner, it has been our experience that about 2% are delayed or misdirected by the Post Office. We reluctantly offer 1st Class shipping only because most buyers place free shipping above reliable shipping in order of importance. First Class Mail is not an expedited service. To date, 100% of all our shipping problems have been with 1st Class Mail. If you are not in a hurry to receive your purchase, 1st Class may be a viable option but if you need your item in a rush, we strongly advise that you upgrade to Priority Mail. In short,we do not recommend using 1st Class Mail but will do so if that is the shipping method you specify at the time of checkout.
Shipping for International Sales:
Use eBay's shipping calculator to get shipping charges. We Ship via U.S.P.S. Priority Mail International.
We no longer ship by USPS First Class Mail International as there is no package tracking with that service.
All Items that we have listed on eBay we have in stock and ready to ship. Items purchased and paid on Monday through Thursday will ship within 24 hours of the time item is paid for. All Items purchased and paid on Friday, Saturday and Sunday will ship the following Monday with the exception of holidays. Items purchased and paid on a holiday will ship the following business day. With this said we will do everything possible to ship all items the same day. Under no circumstances will items be shipped without payment received. If an incorrect address is given at the time of purchase and the item is undeliverable the shipping charges will not be refunded.
Please Note:
Your country may charge an import duty on this purchase in addition to the purchase price and shipping charges we strongly suggest that you determine what taxes your country will charge before you make a purchase. Under no circumstances will we falsify or undervalue export or declared value documents.
Methods of Payment Accepted for U.S. Sales:
PayPal, Credit Cards via PayPal, Immediate Payment is Required
Methods of Payment Accepted for International Sales:
PayPal, Credit Cards via PayPal, Immediate Payment is Required
Returns and Warranty Policies
If you are returning an item please call for return authorization. We will not accept returns without prior authorization. Absolutely no refunds on installed electrical parts.
Returns for Refund:
A refund of a returned item,
less original shipping costs,
will be issued if return authorization is obtained within 30 days of purchase.
Items being returned must be unopened, uninstalled and in resalable condition.
Refunds will be for the item being returned less shipping cost.
Shipping charges are non-refundable.
All items being returned for a refund will be subject to inspection. If the item being returned has been installed, damaged or the original packaging is damaged or marked and is not in resalable condition
(i.e. torn, broken, written on, greasy finger prints, etc.)
no refund will be issued.
Please use a suitable shipping carton to return items
(do not use manufacture's packaging to ship).
Ship To:
Wulffe Marine
7252-C Industrial Park Blvd.
Mentor, OH. 44060
If returned after 30 days from time of purchase a full refund may not be possible and may be subject to restock charges.
Returns for Warranty:
If an item you have purchased from us fails please call and we will assist you with the warranty. Warranty items will follow the manufacturer's warranty policies. Not all warranty items can be returned to us, some manufacturers require you to send warranty items back to them direct and prior return authorization is required. We will assist you with the information needed to obtain return authorization. In the case that we have the ability to handle the warranty item, return authorization is required prior to returning the item to us. In most cases the item will be replaced at no charge to you. In the rare case that we do not have the item being returned in stock a refund will be issued. If you have any questions please feel free to call or contact us.
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18-3320 9-48307 Mercruiser outdrive 1985 1986 1987 1988 1989 1990 85 86 87 88 89 90 2.5L 3.0L 3.7L 3.7LX 4.3L 4.3LX 5.0L 5.0LX 5.7L 5.7LX 120 hp 120hp 140 140hp 165 165hp 170 170hp 180 180hp 185 185hp 190 190hp 200 200hp 205 205hp 260 260hp