8M0094233 Maintenance Kit for Mercury 150HP EFI | JLM Marine

Maintenance Kit for Mercury 150HP EFI – OEM 8M0094233

This comprehensive maintenance kit is designed for Mercury 150HP EFI FourStroke outboard motors. It includes all essential components to keep your engine running at peak performance, from the water pump repair kit to filters and gaskets.

This kit directly replaces Mercury OEM part number 8M0094233 and provides everything needed for a complete routine service, including impeller, thermostat, fuel filter, oil filter, and drain gaskets.

• Complete maintenance solution with water pump, thermostat, and filters in one package
• Includes all necessary gaskets and seals for hassle-free installation
• Compatible with Mercury Quicksilver Marine 150HP EFI FourStroke outboards

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

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:

• 1 Water Pump Repair Kit 46-8M0061040
  • Impeller: 47-43026Q02
  • Seal: 26-8M2014338
  • Plate: 8172761
  • Gasket: 27-8172771
  • Key: 28-8M0032833
  • Housing: 817275A1
  • Water Tube: 8M0036238
  • Plate: 27-8M0142616
• 1 Thermostat 892864T06
• 1 Thermostat Seal
• 1 Fuel Filter Assembly 35-879885Q
• 1 Oil Filter 35-877761K01
• Drain Gaskets (1+3) 26-8M0007119, 26-8M0204693, 26-830749

Installation Guide

1. Preparation: Ensure the engine is off and cool. Gather all tools required, including socket wrenches, screwdrivers, and drain pans.
2. Drain Oil: Remove the crankcase and gearcase drain plugs, allowing old oil to fully drain. Replace drain gaskets with the new ones included in the kit.
3. Remove Water Pump: Disconnect the lower unit and locate the water pump housing. Remove the old impeller, plate, and gaskets carefully.
4. Install New Water Pump Components: Install the new impeller (43026Q02), seal, housing, gasket, key, and plates as shown in your engine's service manual. Lubricate the impeller with glycerin or soapy water before installation.
5. Replace Thermostat: Locate the thermostat housing on the engine. Remove the old thermostat and seal, then install the new thermostat (892864T06) with the new seal.
6. Replace Fuel Filter: Locate the fuel filter assembly on the engine. Disconnect fuel lines carefully and replace with the new fuel filter assembly (35-879885Q).
7. Replace Oil Filter: Unscrew the old oil filter and install the new oil filter (35-877761K01). Tighten securely by hand.
8. Refill Fluids: Refill the crankcase with 6 liters of recommended marine engine oil. Refill the gearcase with 781 milliliters of appropriate gear lubricant.
9. Reassemble: Reattach the lower unit and ensure all bolts and fasteners are torqued to manufacturer specifications. Reconnect all fuel lines and water tubes.
10. Test Run: Start the engine and check for leaks around the thermostat housing, oil filter, fuel filter, and water pump. Monitor engine temperature and water flow from the telltale port.
11. Final Inspection: After a brief test run, shut down the engine and re-check all fluid levels. Top off if necessary and inspect all connections one final time.

Troubleshooting & FAQ

Q: How do I confirm this kit fits my Mercury 150HP outboard?
A: Verify your engine is a Mercury 150HP EFI FourStroke model. Cross-reference the OEM part number 8M0094233 with your engine's service manual or parts diagram. If your current maintenance kit matches this part number, this kit will fit.

Q: How often should I replace the water pump impeller and perform this maintenance?
A: Mercury recommends replacing the water pump impeller annually or every 100 hours of operation, whichever comes first. Thermostats, fuel filters, and oil filters should also be replaced during regular service intervals—typically every 100 hours or annually.

Q: What are the signs that my water pump impeller needs replacement?
A: Common signs include reduced water flow from the telltale port, engine overheating, weak or intermittent stream, or visible damage to the impeller blades. If you notice any of these symptoms, replace the impeller immediately to prevent engine damage.

Q: Can I use this kit if my engine oil capacity differs slightly?
A: This kit is specifically designed for Mercury 150HP EFI FourStroke engines with a crankcase capacity of 6 liters and gearcase capacity of 781 milliliters. If your engine specifications match, this kit is correct. Always verify your engine's exact model and year before purchasing.

Q: Is this an OEM or aftermarket maintenance kit?
A: 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.

Q: How fast do you ship and how much does it cost?
A: 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.

Q: What is your warranty and return policy?
A: 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.