Description
Mercury 8M0147066 MerCruiser 4.5L MPI Engine with Alpha Sterndrive 300 Hour Maintenance Kit
The Mercury Precision Parts 300 Hour Maintenance Kit 8M0147066 contains all the parts you need to complete a 300-hour service on MerCruiser 4.5L MPI engines with Alpha sterndrives in one convenient package. This factory-engineered kit simplifies your maintenance schedule by providing genuine components designed specifically for your engine's performance and longevity.
Applications
- MerCruiser 4.5L MPI Alpha Engines: Models with standard cooling (2014 and newer)
Shipping & Returns
In-stock items ship quickly to ensure your boat stays on the water. For our full return policy, please visit /policies/refund-policy.
Key Facts
Brand: Mercury Precision
Part ID: 8M0147066
UPC: 745061244726
Country of Origin: US
Packaged Weight: 2.78
Packaged Length: 13.25
Packaged Width: 7.75
Packaged Height: 6
Prop 65 Code: Cancer and Reproductive Harm
What’s Included
Filters: Oil filter and fuel filter
Ignition: Spark plugs and PCV valve
Cooling: Thermostat and thermostat gasket
Drive: Serpentine belt and gearcase drain seals
Service Notes
Mercury maintenance kits feature premium-quality oil and fuel filters with high internal pleat counts for superior filtration and heavy-duty electroplated housings that prevent corrosion. Complete your service with genuine Mercury 4-Stroke Marine Engine Oil and Mercury Premium Gear Lube (858058K01), which are sold separately.
Frequently Asked Questions
Does this kit work for Bravo drives?
No, this specific kit is designed for 4.5L MPI engines paired with Alpha sterndrives (2014 & newer) with standard cooling.
Are the spark plugs pre-gapped?
While often pre-gapped, we recommend verifying the gap per your owner's manual before installation.
Is the serpentine belt genuine Mercury?
Yes, all components in this 300-hour kit are genuine Mercury Precision Parts.







