8M0251128 Maintenance Kit for Mercury 60HP | JLM Marine

8M0251128 Maintenance Kit for Mercury 60HP

This comprehensive maintenance kit is specifically designed for Mercury 60HP outboard engines manufactured from 1993 to 2014 (serial numbers 0G5900000 to 0T980000 and 0T980000 to serial numbers starting with 1B...). It includes all essential components needed for a complete routine service, ensuring your engine runs reliably season after season.

Direct Replacement: OEM part number 8M0251128. This aftermarket kit delivers the same functionality and fitment as the original Mercury kit at a competitive price point.

• Includes impeller, gaskets, thermostat, fuel filter, gear oil pump, and other critical service components
• Covers water pump service, cooling system maintenance, and lubrication system needs
• Designed for straightforward installation with standard marine tools

Part Number Cross-Reference

Use this table to confirm the OEM part number for this maintenance kit:

Compatible Engine Models

Confirm your engine model/year in the table below. For Mercury owners, here's a guide to help you identify your engine's serial/model: Mercury Serial Number Guide. You can also review exploded diagrams to verify part numbers: Mercury Parts Diagrams & Catalog.

Technical Specifications

Package Contents

This maintenance kit includes the following components for a complete service:

• 47-19453T (Impeller) × 1
• 19700A 2 (Plate) × 1
• 893857 (Water tube) × 1
• 12-858234 (Gasket) × 2
• 28-19699 (Key) × 1
• 27-822189 (Gasket) × 1
• 27-19701 (Gasket) × 1
• 2642 (Gasket) × 4
• 25-62702 (O-ring) × 2
• 19183 3 (Gasket) × 3
• 850055001 (Thermostat) × 1
• 27-827284 (Thermostat Gasket) × 1
• 35-877565T1 (Fuel Filter) × 1
• 8M007119 (Drain Gasket) × 1
• 830749 (Drain Gasket) × 3
• 24OP149 (Gear Oil Pump) × 1

Note: Verify all part numbers against your engine's service manual before installation to ensure proper fitment.

Installation Guide

1. Prepare the engine: Disconnect the fuel line and ensure the engine is off and cool. Remove the lower unit by loosening the mounting bolts.
2. Access the water pump: Remove the water pump housing by unscrewing the retaining bolts. Carefully separate the housing from the lower unit.
3. Remove the old impeller: Pull out the old impeller and water tube. Inspect the impeller housing for wear or damage.
4. Install the new water tube and key: Insert the new water tube (893857) and position the drive shaft key (28-19699) in place.
5. Fit the new impeller: Lubricate the new impeller (47-19453T) with water pump grease and carefully insert it into the housing, ensuring the blades follow the correct rotation direction.
6. Replace all gaskets: Install the new plate (19700A 2) and replace all gaskets (12-858234, 27-822189, 27-19701, 2642) and O-rings (25-62702) as specified in the package contents.
7. Install the thermostat: Remove the old thermostat and install the new one (850055001) with the new thermostat gasket (27-827284) and additional gaskets (19183 3).
8. Replace the fuel filter: Locate the fuel filter housing, remove the old filter, and install the new fuel filter (35-877565T1).
9. Change the gear oil: Use the included gear oil pump (24OP149) to drain old gear oil and refill with fresh marine gear oil. Replace the drain gaskets (8M007119, 830749) on all drain/fill plugs.
10. Reassemble the water pump housing: Carefully align the water pump housing and tighten all bolts in a crisscross pattern to the manufacturer's torque specifications.
11. Reattach the lower unit: Align the lower unit with the drive shaft and secure all mounting bolts. Reconnect the fuel line.
12. Test the system: Start the engine in a test tank or on the water and verify proper water flow from the telltale (pee hole). Check for leaks around all gasket surfaces.

Troubleshooting & FAQ

How do I confirm this maintenance kit fits my Mercury engine?
Verify that your engine is a Mercury 60HP with a serial number between 0G5900000 and 0T980000, or starting with 1B... and manufactured between 1993 and 2014. You can find your serial number on the engine's mounting bracket or use the Mercury Serial Number Guide for assistance.

How often should I replace the components in this maintenance kit?
Mercury recommends servicing the water pump impeller annually or every 100 operating hours, whichever comes first. The thermostat should be inspected annually and replaced if corroded or damaged. The fuel filter should be replaced annually or if you notice fuel flow issues. Gear oil should be changed annually or every 100 hours, and always after submersion.

What are the signs that my impeller needs replacement?
Common symptoms include reduced or no water flow from the telltale, engine overheating, steam from the engine, or loss of power. If you notice any of these signs, inspect and replace the impeller immediately to prevent engine damage.

Can I reuse the old gaskets during installation?
No, you should never reuse old gaskets. This kit includes all necessary gaskets, O-rings, and seals. Always replace them during service to ensure proper sealing and prevent leaks that could lead to overheating or gear oil contamination.

Why is the gear oil pump included in this kit?
The gear oil pump (24OP149) makes draining and refilling the lower unit gear oil much easier and cleaner. It allows you to pump fresh gear oil into the lower fill hole until it flows from the upper vent hole, ensuring proper fill level and eliminating air pockets.

OEM vs. Aftermarket?
This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

How fast do you ship and how much does it cost?
We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

What is your warranty and return policy?
This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.