Mercury Seawater Pump Pulley 8M0147207
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Mercury 8M0147207 is a genuine OEM seawater pump pulley for selected MerCruiser sterndrive and inboard applications. Dealer listings identify it as PULLEY-SEAWTR PMP, and current catalog references show it as the replacement for earlier pulley part numbers in this same seawater-pump family.
Key Features
- Genuine Mercury Marine / Quicksilver OEM part
- Part number 8M0147207
- Identified as seawater pump pulley / PULLEY-SEAWTR PMP
- Commonly listed as a pulley only service part
- Supersedes earlier pulley references including 861579, 807731T, and 807731 depending on catalog source
Engine Compatibility
This pulley is associated with selected MerCruiser sterndrive and inboard V6/V8 applications that use the earlier brass-style seawater pump family tied to the superseded pulley numbers above. Some dealer fitment notes also connect it to 0.75-inch shaft seawater pump assemblies and older 1997–2002 MerCruiser seawater pump applications. Exact fitment should always be confirmed by engine model and serial number before ordering.
Serial Number Fitment Notice
Please confirm compatibility in the Mercury Parts Catalog using your exact engine serial number before purchase. Mercury’s catalog is organized by model and serial number for accurate parts lookup.
When This Part Needs Replacement
Replace this pulley when the original is bent, worn, corroded, damaged at the belt surface, or being renewed during seawater pump service. Because it is part of the belt-driven raw-water pump system, pulley condition matters for proper belt tracking and pump operation. This is a practical service inference based on the part’s documented role as a seawater pump pulley.
Installation Notes
Install only the exact pulley specified for the pump assembly being serviced. Since this part has multiple earlier pulley numbers tied to similar seawater pump setups, serial-number confirmation is the safest way to avoid mismatch. It is sold as the pulley only, so inspect related pump and belt components during service.
Alternate / Superseded Part Numbers
- 8M0147207
- Supersedes 861579
- Supersedes 807731T
- Supersedes 807731
Parts Desk Insight
On belt-driven MerCruiser cooling systems, a seawater pump pulley is one of those parts that often gets overlooked until belt wear or pump service brings it into view. Matching the exact OEM pulley helps keep alignment and pump speed where Mercury intended.
Shipping: Ships same or next day for fast Canada wide shipping. ⚓
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.