Mercury MerCruiser Water Pump Wear Plate 8M0180871
Free returns on all eligible orders
You have 30 days to request a return. All sale items are final sale.
Restore peak cooling system performance with the Mercury MerCruiser Water Pump Wear Plate 8M0180871 — a genuine OEM replacement wear plate that sits at the base of the water pump housing, providing the smooth, precision surface that the impeller rides against. Over time, the wear plate develops grooves and scoring from impeller contact, reducing pump efficiency and coolant flow. Replacing it during every water pump service ensures maximum impeller seal and optimal engine cooling.
Key Features
- Genuine Mercury / MerCruiser OEM Part – Manufactured to exact factory tolerances for a precise fit within the water pump housing
- Restores Pump Efficiency – A fresh wear plate provides the smooth mating surface the impeller needs to generate maximum coolant flow
- Replaceable Wear Surface – Designed to be replaced at each water pump service interval, protecting the more expensive pump housing from wear
- Essential Service Component – Should be replaced any time the water pump impeller is serviced to ensure a complete, reliable repair
- Durable Construction – Made from materials rated for continuous raw-water exposure and the mechanical demands of marine cooling systems
Product Details
- Brand: Mercury / MerCruiser
- Part Number / SKU: 8M0180871
- Type: Water Pump Wear Plate
- OEM: Yes – Genuine Mercury part
- Application: MerCruiser stern drive and inboard engines (verify fitment using your engine serial number)
Fitment & Compatibility
Always confirm compatibility using your engine's serial number or consult your Mercury dealer before ordering. Replace the wear plate whenever servicing the water pump impeller — reusing a worn plate reduces pump output and risks engine overheating. Refer to the MerCruiser service manual for installation procedures and torque specifications.
Note: Water pump service should be performed by a qualified marine technician. Inspect the pump housing for cracks or damage before reinstalling.
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.