Description

Mercury 8M0149932 is a genuine OEM 300 Hour Maintenance Kit for 4.6L V8 Verado and SeaPro outboards, covering engines with serial number 2B529482 and higher. Mercury describes it as a one-box service kit with the required replacement parts for a full 300-hour service, while noting that Mercury 4-stroke oil and recommended gear lube are sold separately.

Key Features

• Genuine Mercury OEM part number 8M0149932.
• Built for 300-hour service on 4.6L V8 Verado and SeaPro outboards.
• Mercury states the kit includes oil filter, fuel filter, oil drain seal, spark plugs, thermostat, alternator belt, anodes, and a water pump repair kit.
• Current dealer kit breakdown also lists the included hardware and anode-related service parts, including the thermostat assembly, serpentine belt, water pump repair kit, anti-vent plate anode, additional anodes, screws, bolts, and washers.
• Mercury says the periodic maintenance covered by this kit can be completed using common shop tools.

Engine Compatibility

The strongest supportable fitment for 8M0149932 is Mercury 4.6L V8 Verado and SeaPro outboards, serial number 2B529482 and higher. That is the clearest current OEM fitment statement tied to this exact SKU.

Serial Number Fitment Notice

Verify fitment by exact engine serial number before ordering. This kit is tied to a specific serial break, so serial-number confirmation is the safest way to avoid ordering a service kit for the wrong 4.6L V8 Verado or SeaPro version.

When This Part Needs Replacement

This kit is used when performing the engine’s scheduled 300-hour service. Mercury notes that a 300-hour service includes the elements of a 100-hour service plus additional components and systems depending on engine model, which is why this kit packages the larger service interval items together.

Installation Notes

Use 8M0149932 with the applicable Mercury owner’s manual service schedule for the covered outboard. Mercury specifically advises following the owner’s manual for recommended service, and notes that the required 4-stroke oil and gear lube are not included in the kit.

Alternate/Superseded Part Numbers

Current Mercury and dealer sources reviewed show 8M0149932 as the active OEM reference for this 300-hour service kit.

Parts Desk Insight

With service kits like this, the exact engine family and serial break matter more than the general “300-hour kit” label. Matching 8M0149932 to the correct 4.6L V8 Verado / SeaPro serial range helps make sure the service parts lineup matches the engine you are actually working on.

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