Mercury 300 Hour V8 CMS Service Kit Without Oil

Compatible Applications

What is Included

• OEM Mercury oil filter
• OEM Mercury fuel filter
• Oil drain seal
• Spark plugs
• Thermostat
• Alternator belt
• Water pump repair kit
• Anodes

What is Not Included

• Engine oil is sold separately
• Gear lube is sold separately

OEM Part Numbers & Cross References

Want the Kit With 10W30 Oil?

Related Anode Kit

This V8 CMS application uses the Mercury CMS aluminum anode kit. If you are replacing anodes separately or want a complete corrosion protection kit, see:

Mercury 8M0205953 Aluminum Anode Kit for CMS V6 / V8 Outboards

Choose Your Engine Oil & Gear Lube

This service kit does not include oil or gear lube, allowing customers to choose their preferred Mercury oil option.

Most applications use either 1 gallon plus 3 quarts or 7 individual quarts of engine oil, plus 1 quart of Mercury gear lube. Always verify fluid capacity in your owner’s manual.

What This Service Kit is Used For

This Mercury 300-hour service kit is used for scheduled maintenance on compatible V8 CMS SeaPro and ProXS 4-stroke outboards.

Periodic maintenance helps protect your investment, support reliable operation, and keep your engine running longer and stronger.

Mercury packages the required 300-hour service replacement items together so customers do not have to order each part separately.

Key Features and Benefits

• Genuine OEM Mercury 300-hour maintenance kit
• Fits Mercury 4.6L V8 CMS SeaPro and ProXS 4-stroke outboards
• Includes oil filter, fuel filter, and oil drain seal
• Includes spark plugs, thermostat, and alternator belt
• Includes water pump repair kit and anodes
• Engine oil and gear lube sold separately
• Convenient all-in-one maintenance parts package
• Produced to Mercury OEM specifications

Service Kit Details

• Brand: Mercury / Quicksilver
• Part Number: 8M0149931
• Part Type: 300-Hour Service Kit Without Oil
• Application: Mercury 4.6L V8 CMS SeaPro and ProXS FourStroke Outboards
• Midsection: CMS / Conventional Mid Section
• Includes Oil: No
• Includes Gear Lube: No
• Quantity Sold: Kit

FAQ

What engines does Mercury 8M0149931 fit?
This kit fits Mercury 4.6L V8 CMS SeaPro and ProXS 4-stroke outboards.

Does this kit include engine oil?
No. This version does not include engine oil.

Does this kit include gear lube?
No. Gear lube is sold separately.

What parts are included in this 300-hour kit?
The kit includes an oil filter, fuel filter, oil drain seal, spark plugs, thermostat, alternator belt, water pump repair kit, and anodes.

Is there a version with oil included?
Yes. Mercury 8M0149931-L includes the same 300-hour service kit with 10W30 engine oil.

Which anode kit goes with this engine?
This CMS application uses Mercury aluminum anode kit 8M0205953.

Is this an OEM Mercury kit?
Yes. This is a genuine Mercury / Quicksilver service kit produced to Mercury OEM specifications.

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