Mercury Quicksilver 100-Hour Service Kit 8M0149929 — 3.4L V6 & 4.6L V8 FourStroke 175–300 HP
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Mercury Quicksilver 100-Hour Service Kit — OEM 8M0149929 | 3.4L V6 & 4.6L V8 FourStroke 175–300 HP
Keep your Mercury V6 or V8 FourStroke on its service schedule with this genuine OEM 100-hour maintenance kit. Mercury has packaged the routine 100-hour replacement filters and drain seals together in one kit — the correct oil filter, fuel filter, and gearcase drain seals for the 3.4L V6 and 4.6L V8 FourStroke family from 175 to 300 HP. Engine oil and gear lubricant are sold separately.
Part Information
- OEM Part Number: 8M0149929
- Brand: Mercury / Quicksilver
- Official Product Type: 100-hour maintenance service kit
- Engine Family: Mercury 3.4L V6 and 4.6L V8 FourStroke outboard
- Horsepower Range: 175–300 HP
- Serial Range: 2B529482 and up
- GTIN / UPC: 745061249967
- Note: Engine oil and gear lubricant are not included — sold separately
Kit Contents
- 1 x Oil filter — 8M0123025
- 1 x Fuel filter — 8M0106635
- 2 x gearcase / oil drain seals
Compatible Applications
- Mercury 3.4L V6 FourStroke 175 HP — serial 2B529482 and up
- Mercury 3.4L V6 FourStroke 200 HP — serial 2B529482 and up
- Mercury 3.4L V6 FourStroke 225 HP — serial 2B529482 and up
- Mercury 4.6L V8 FourStroke 200 HP — serial 2B529482 and up
- Mercury 4.6L V8 FourStroke 225 HP — serial 2B529482 and up
- Mercury 4.6L V8 FourStroke 250 HP — serial 2B529482 and up
- Mercury 4.6L V8 FourStroke 300 HP — serial 2B529482 and up
- Confirm engine displacement, horsepower, and serial number before ordering — other Mercury FourStroke and Verado engine families use different service kit numbers
Related Service Kits & Parts
- Mercury Quicksilver 300-Hour Service Kit 8M0149930 — 3.4L V6 FourStroke (includes spark plugs, thermostat, belt, water pump kit & anodes in addition to filters)
- Mercury MerCruiser Quicksilver Oil Filter — 8M0123025
- Mercury MerCruiser Fuel Filter Kit — 8M0106635
When to Use This Kit
- At every 100-hour service interval for a compatible Mercury 3.4L V6 or 4.6L V8 FourStroke outboard
- Covers oil filtration, fuel filtration, and drain seal replacement in one service event
- Use the 300-hour kit (8M0149930) for the major service interval, which adds spark plugs, thermostat, belt, water pump parts, and anodes
Service Interval
100 hours or annually, whichever comes first — per the Mercury maintenance schedule for 3.4L V6 and 4.6L V8 FourStroke outboards. The 100-hour kit covers routine filter and seal replacement between major 300-hour services.
Installation Notes
- Follow the applicable Mercury maintenance schedule and service procedures for the exact engine serial number
- Replace the oil filter, fuel filter, and drain seals per Mercury service specifications
- Refill the engine and gearcase with the correct Mercury-recommended lubricants — oil and gear lube are not included
- Record the service date and hours at completion
Technical FAQ
What is the difference between the 100-hour kit (8M0149929) and the 300-hour kit (8M0149930)?
The 100-hour kit covers routine filter and seal replacement. The 300-hour kit (8M0149930) includes everything in the 100-hour kit plus spark plugs, thermostat, alternator belt, water pump repair kit, and anodes for the major service interval.
Does this kit cover both V6 and V8 FourStroke engines?
Yes. 8M0149929 covers both the 3.4L V6 and 4.6L V8 FourStroke outboards from 175–300 HP, beginning at serial 2B529482. Other engine families — including Verado — use different service kit numbers.
Is engine oil included?
No. Engine oil and gear lubricant must be purchased separately to complete the service.
Parts Desk Insights
The 100-hour kit is the most frequently needed service kit in this engine family — customers doing their own maintenance appreciate having the filters and seals bundled together so there’s nothing to forget. The most common ordering issue is confusion between the 100-hour and 300-hour kits — both are available for the V6/V8 FourStroke family, and customers sometimes order the 300-hour kit when they only need a routine service. If a customer is due for a 300-hour service, point them to the 8M0149930 kit instead. Always confirm displacement and serial number — Verado engines use different kits. Browse the full Mercury Engine Maintenance Parts collection for oils, gear lube, and additional service items.
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.