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Description
8M0149931 Service Kit, 300 Hrs., Various V8 Outboards/400B8M0149931 Service Kit, 300 Hrs., Various V8 Outboards 00 8M0149931 Active SERV KIT 300 HRS 300 Hour 4 Stroke Outboard Service Kit 8M0149931 is for Mercury V8 (4. 6L) CMS (Conventional Mid Section) SeaPro and ProXS 4 Stroke outboards. The box includes oil filter, fuel filter, oil drain seal, spark plugs, thermostat, alternator belt, water pump repair kit and anodes. Follow your owner's manual service schedule to help keep your engine running longer and
8M0149931
Service Kit, 300 Hrs., Various V8 Outboards
00
8M0149931
Active
SERV KIT-300 HRS
300-Hour 4-Stroke Outboard Service Kit 8M0149931 is for Mercury V8 (4.6L) CMS (Conventional Mid Section) SeaPro and ProXS 4-Stroke outboards. The box includes oil filter, fuel filter, oil drain seal, spark plugs, thermostat, alternator belt, water pump repair kit and anodes. Follow your owner's manual service schedule to help keep your engine running longer and stronger. Periodic maintenance and service helps protect your investment in your engine and your boating pleasure.
- Complete selection of required 300-hour service replacement items in 1 box — no need to order separate parts
- Includes oil filter, fuel filter, oil drain seal, spark plugs, thermostat, alternator belt, water pump repair kit and anodes
- Periodic maintenance is easy to do using common shop tools
- Follow your owner's manual for recommended service to keep your engine running longer and stronger while protecting your investment in your boating fun
- Produced by Mercury Marine to our stringent original equipment manufacturer specifications to maximize the performance of your Mercury and Mariner outboard or MerCruiser sterndrive
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 5
My Husband’s Favorite Socks
Size: Large, Color: (035) Steel / White / Black
The Under Armour Unisex Training Cotton No Show Socks have become my husband’s absolute favorite socks—and he’s pretty picky about socks.
Comfortable Fit:
They’re soft, comfortable, and fit well without being too tight. They stay in place all day with no slipping or bunching.
Great for Everyday Wear:
Perfect for workouts, walking, and everyday use. They provide just the right amount of cushioning without feeling bulky.
Durable & Long-Lasting:
These hold up really well through regular wear and washing. They keep their shape and don’t wear thin quickly.
Reliable Under Armour Quality:
You can tell they’re well made. Consistent quality that matches what you expect from Under Armour.
Overall Impression:
When someone has a favorite sock and keeps reaching for it, that says everything. These are comfortable, durable, and dependable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 30, 2025
★★★★★ 5
Quality Under Armour socks
Size: Large, Color: (100) White / White / Black
Nice medium thick sock that is breathable but cushioned. It stays put in the show and doesn’t fall down. Fit is true to size, no show/minimal show
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Reviewed in the United States on May 2, 2026
★★★★★ 5
Perfect Pairs
Size: Large, Color: (100) White / White / Black
Very comfortable, soft & affordable..
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
★★★★★ 5
Excellent athletic socks
Size: Large, Color: (100) White / White / Black
Solid athletic socks at a great price. Not too thick, not too thin. Second time I've purchased them. They last longer than most socks I've used in the past too.
Only concern is the sizing. I may be reading the sizing chart wrong, but for my size 13 feet it says XL are the correct sock size. I've ordered Large twice and they're perfect. I would imagine the size Large socks would also fit up to size 14 shoe, but probably need to go with XL if foot is lager than 14.
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Reviewed in the United States on April 12, 2026
★★★★★ 4
Great product
Size: Large, Color: (035) Steel / White / Black
Comfortable fit perfect
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Reviewed in the United States on March 15, 2026