Water Pump Repair Kit 47-89981 18-3039 for Mercury 4 4.5 6 7.5 9.8 10 HP Outboard
Water Pump Repair Kit 47-89981 18-3039 for Mercury 4 4.5 6 7.5 9.8 10 HP Outboard
Product Overview
Water pump repair kit for Mercury two-stroke outboards from 4 HP to 10 HP, supplied as 1 x impeller with gaskets. It replaces Mercury 47-89981, 47-89981T2, 47-89981B, 47-65957 and 47-39074, plus Sierra 18-3039, GLM 89810 and Mallory 9-45305. The impeller has a 0.456 in inside diameter and is marked 47-89981. A worn impeller shows up as a weak telltale, overheating at idle, or cracked and set blades when the housing comes off.
Specifications & Attributes
| Specification | Detail |
|---|---|
| Condition | New / New with tags |
| Type | Water Pump Repair Kit |
| Engine Type | Mercury two-stroke outboard |
| Horsepower Range | 4 HP - 10 HP |
| Impeller Inside Diameter | 0.456 in |
| Warranty | Standard |
OEM Cross Reference
| Brand | OEM Part Numbers |
|---|---|
| Mercury | 47-89981, 47-89981T2, 47-89981B, 47-65957, 47-39074 |
| Sierra | 18-3039 |
| GLM | 89810 |
| Mallory | 9-45305, 9-45305-10 |
Compatible Engines
Fits the following Mercury outboards:
| Model | Notes |
|---|---|
| 4 HP 1-cylinder | Impeller marked 47-89981 |
| 4 HP (40) 1-cylinder | Serial 2278851 and up |
| 4.5 HP (45) 1-cylinder | Impeller marked 47-89981 |
| 6 HP (60) | Serial 1916139 to 2529894 |
| 7.5 HP (75) | Impeller marked 47-89981 |
| 9.8 HP | Impeller marked 47-89981 |
| 10 HP (110) | Serial 1865779 and up |
| 3.5 HP (UK listing) | As listed |
| 3.6 HP (UK listing) | As listed |
| Serial references (UK listing) | 1582403, 1916138, 2193817, 2193818, 2385673, 2387383, 2498136, 2529895, 4107219, 4107220, 4131609, 4131610, 5206550, 5226934, 5595531, 5595532 |
What's Included
| Component | Qty |
|---|---|
| Water Pump Impeller | 1 |
| Gaskets | 1 set |
Condition & Warranty
| Item | Detail |
|---|---|
| Condition | New / New with tags |
| Warranty | Standard |
| Packaging | Sealed retail packaging |
Before You Buy
- Verify your engine model and serial number before ordering
- Fits Mercury 4, 4.5, 6, 7.5, 9.8 and 10 HP two-stroke outboards
- Check the impeller inside diameter matches 0.456 in before fitting
- Renew the gaskets with the impeller — reused ones usually weep
- 30-Day Easy Returns
- Free Worldwide Shipping
- OEM Quality Without the Markup
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Boat Owners' Review
Before You Buy
Frequently Asked Questions
What is your refund policy?
We offer a 14-day hassle-free return on all products. Items must be unused and in original packaging. Every XRmarine part is also covered by our 1-year warranty against manufacturing defects. If something is not right, email us at info@xrmarineparts.com — replacement or full refund, your choice.
See our full Refund Policy for complete details.
How does shipping work?
Free international shipping on every order — no minimums. We operate a global warehouse network with a main distribution centre in Asia (10-20 business days). We also hold stock in regional warehouses across the United States, Germany, the United Kingdom, Australia, and Poland (opening soon) — most orders arrive in 1-3 business days within those countries and in 2-8 business days to nearby regions. Tracking included.
See our full Shipping Policy.
How do you keep prices fair?
We cut out the middlemen. XRmarine sources directly from quality manufacturers and sells at honest prices. Same OEM-quality parts, no dealership markup. Every order comes with free shipping, real expert support, and a 1-year warranty.
Learn more on our About Us page.
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