Mercury MerCruiser Wear Pad 879346T30 | OEM Drive Component
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Mercury MerCruiser Wear Pad 879346T30
Part Number: 879346T30
Brand: Mercury / MerCruiser / Quicksilver
Official Product Type: Wear Pad — OEM Drive Component
System: Sterndrive / Marine Drive Assembly
Diagram Position: Confirm exact location in the Mercury parts diagram for your specific drive model and serial number
A genuine OEM Mercury MerCruiser wear pad for applicable sterndrive and drive assemblies. Wear pads are sacrificial components designed to absorb friction and contact loads between moving or mating parts — protecting more expensive structural components from wear. Replacing a worn pad at the correct service interval prevents damage to the surrounding assembly and keeps the drive operating smoothly.
Compatible Applications
- Mercury MerCruiser sterndrive and drive assemblies where part number 879346T30 is specified in the parts diagram
- Confirm fitment by locating 879346T30 in the Mercury parts diagram for your specific drive model and serial number before ordering
Wear pad fitment is assembly- and position-specific. Always verify this part number against the Mercury parts diagram for your drive — do not order based on visual similarity alone.
Part Details
- Component type: Wear pad (sacrificial friction/contact surface)
- Function: Absorbs contact loads and friction between mating drive components, protecting the surrounding assembly from accelerated wear
- OEM status: Genuine Mercury MerCruiser — not aftermarket
- Diagram position: Confirm in the Mercury parts diagram for your drive model and serial number
When to Replace
- Wear pad is visibly worn, grooved, cracked, or thinned beyond the service limit
- Unusual noise, vibration, or roughness in the drive assembly during operation
- Called out for replacement in the Mercury service manual during a scheduled drive service
- Any time the surrounding assembly is disassembled for major service — inspect and replace if there is any doubt
Installation Notes
- Confirm the correct part number against the Mercury parts diagram before installation.
- Clean the mating surfaces thoroughly before fitting the new wear pad.
- Inspect adjacent components for wear or damage that may have been caused by the failed pad.
- Follow the Mercury service manual for installation sequence and any torque specifications that apply to the surrounding assembly.
- After reassembly, verify smooth operation before returning the drive to service.
Parts Desk Insights
Best use case: This is the right part when 879346T30 appears in the Mercury parts diagram for the assembly being serviced. Wear pads are inexpensive relative to the components they protect — replacing them at the first sign of wear is always the better value compared to allowing damage to spread to the surrounding drive parts.
Common issues: The most common issue is customers ordering a wear pad by appearance rather than by part number — many Mercury wear pads look similar but differ in thickness, material, or profile. Always order by the exact part number shown in the diagram. A second common issue is discovering that a worn pad has already caused damage to the mating surface; inspect the surrounding components carefully before reassembly to avoid a repeat failure.
Related Parts
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 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.