300 Hour Service Kit
Shipping information
Same-day shipping on orders placed before 11 AM Eastern Time.
Free shipping on orders of $199 and over.
Oils and fluids: an additional $10.99 shipping fee applies to each oil and fluid item.
30-day returns on eligible items
Unused, uninstalled items in original packaging. Special-order items: 20 days, 25% restocking fee.
Compatible Applications
| Brand | Horsepower | Engine Type | Application Notes |
|---|---|---|---|
| Mercury | 150HP | FourStroke | Serial 1B905505 and higher |
What is Included
| Qty | Included Part | Part Number |
|---|---|---|
| 1 | Oil Filter | Included |
| ā | Fuel Filters | Included |
| 4 | Spark Plugs | Included |
| 1 | Thermostat Kit | Included |
| 1 | Water Impeller Kit | Included |
| 1 | Alternator Belt | Included |
| ā | Anodes | Included |
| ā | Gearcase Drain Seals | Included |
What This Kit is Used For
This genuine Mercury 300-hour maintenance kit includes the parts Mercury recommends for the 300-hour service on Mercury 150HP FourStroke outboards with serial number 1B905505 and higher, including filters, spark plugs, thermostat, water pump impeller, belt, and anodes.
The filters feature high internal pleat counts and electroplated housings for corrosion resistance.
Key Features and Benefits
- OEM Mercury 300-hour maintenance kit
- Fits Mercury 150HP FourStroke, serial 1B905505 and higher
- Includes water impeller kit, thermostat kit, and alternator belt
- Includes 4 spark plugs, filters, anodes, and drain seals
- All recommended 300-hour parts in one box
Kit Details
- Kit Part Number: 8M0094233
- Manufacturer: Mercury Marine (OEM)
- Service Interval: 300 hours
- Engine Compatibility: Mercury 150HP FourStroke, serial 1B905505+
- Not Included: Engine oil and Mercury Premium Gear Lube 858058K01
FAQ
What engines does this kit fit?
This kit fits Mercury 150HP FourStroke outboards with serial number 1B905505 and higher.
Does this kit include a water pump impeller?
Yes. A water impeller kit is included along with the thermostat kit and alternator belt.
Does this kit include oil or gear lube?
No. Mercury 4-stroke oil and Mercury Premium Gear Lube (858058K01) are sold separately. A version with 10W-30 oil is also available.
Returns & warranty
Most standard items may be returned within 30 days of purchase if unused, uninstalled, complete, and in original packaging. Request a Return Authorization (RMA) before sending anything back. Shipping costs are non-refundable.
Special-order items may be returned within 20 days, subject to a 25% restocking fee.
Warranty claims follow the manufacturer's warranty policy. Contact us and we'll help with the process.