Fuel Pump Assembly – Fits Mercury/Mariner 25-60 HP 4-Stroke (Replaces 8M0141844, 8M0118176, 881862T1)
Fuel Pump Assembly – Fits Mercury/Mariner 25-60 HP 4-Stroke (Replaces 8M0141844, 8M0118176, 881862T1) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
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Fuel Pump Assembly – Fits Mercury/Mariner 25-60 HP 4-Stroke (Replac...
Fuel Pump Assembly – Fits Mercury/Mariner 25-60 HP 4-Stroke (Replaces 8M0141844, 8M0118176, 881862T1) is backordered and will ship as soon as it is back in stock.
Product Details
This is a direct-replacement Fuel Pump Assembly – Fits Mercury/Mariner 25-60 HP 4-Stroke engines from model years 2000–2021. It is designed for 3-cylinder and 4-cylinder EFI outboards, providing reliable fuel delivery manufactured to OEM specifications.
This assembly is a direct interchange for Mercury part numbers 8M0141844, 8M0118176, 881862T1, and others, as well as aftermarket equivalents from Sierra and WSM.
- Installs directly with plug-and-play electrical connections.
- Compatible with standard gasoline and E10 ethanol blends.
- Constructed from high-grade, corrosion-resistant plastic housing.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury | 8M0141844 |
| Mercury | 8M0118176 |
| Mercury | 881862T1 |
| Mercury | 881862T07 |
| Mercury | 892874T |
| Mercury | 892874T01 |
| Mercury | 899106T |
| Mercury | 899106T01 |
| Sierra | 18-8866 |
| WSM | 600-092 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This fuel pump assembly fits a range of Mercury 4-stroke EFI outboards from 25 to 60 HP.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Mercury | 3 Cylinder EFI | 25 | 4-Stroke | 2000–2021 | 8M0118176/8M0141844 | |
| Mercury | 3 Cylinder EFI | 30 | 4-Stroke | 2002–2021 | 8M0118176/8M0141844 | |
| Mercury | 3 Cylinder EFI | 35 | 4-Stroke | 2009–2014 | 8M0118176/8M0141844 | |
| Mercury | 3 Cylinder EFI | 40 | 4-Stroke | 2002–2013 | 8M0118176/8M0141844 | |
| Mercury | 4 Cylinder EFI | 40 | 4-Stroke | 2002–2012 | 8M0118176/8M0141844 | |
| Mercury | 4 Cylinder EFI | 45 | 4-Stroke | 2002–2012 | 8M0118176/8M0141844 | |
| Mercury | 4 Cylinder EFI | 50 | 4-Stroke | 2002–2021 | 8M0118176/8M0141844 | |
| Mercury | 4 Cylinder EFI | 55 | 4-Stroke | 2002–2021 | 8M0118176/8M0141844 | |
| Mercury | 4 Cylinder EFI | 60 | 4-Stroke | 2002–2021 | 8M0118176/8M0141844 |
It is also compatible with various Mariner outboards that use the same engine platforms.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Mariner | 3 Cylinder EFI | 30 | 4-Stroke | 2002–2021 | 8M0118176/8M0141844 | |
| Mariner | 3 Cylinder EFI | 40 | 4-Stroke | 2002–2013 | 8M0118176/8M0141844 | |
| Mariner | 4 Cylinder EFI | 40 | 4-Stroke | 2002–2012 | 8M0118176/8M0141844 | |
| Mariner | 4 Cylinder EFI | 50 | 4-Stroke | 2002–2021 | 8M0118176/8M0141844 | |
| Mariner | 4 Cylinder EFI | 60 | 4-Stroke | 2002–2021 | 8M0118176/8M0141844 |
Technical Specs
- Product Type
- Fuel Pump Assembly
- Installation
- Direct replacement
- Fuel Type
- Gasoline/Petrol (including E10 blends)
- Connection
- Direct plug & play
- Housing Material
- High-grade plastic
- Housing Color
- Black
- Dimensions
- 120 × 100 × 85 mm (4.72 × 3.94 × 3.35 in)
- Weight
- 0.432 kg (0.95 lb)
- Fitting Type
- OEM-compatible connections
- Other Technical Attributes
- Manufactured to OEM specifications using same materials as originals
What’s in the Box
- 1 x Fuel Pump Assembly (8M0118176/8M0141844)
- 1 x Cable Tie (54-816311T)
Installation Notes
- Disconnect the battery and relieve fuel system pressure according to your engine's service manual.
- Carefully disconnect the electrical connector and fuel lines from the old pump assembly. Note their orientation.
- Remove the mounting bolts or hardware securing the old pump and remove it from the engine.
- Compare the new assembly to the old one to ensure an identical match.
- Install the new fuel pump assembly, securing it with the original mounting hardware.
- Reconnect the fuel lines and the electrical connector securely.
- Reconnect the battery and prime the fuel system as per the manufacturer's instructions before starting the engine.
- Check for any leaks at the connections with the engine running at idle.
Troubleshooting & FAQ
How do I confirm this pump fits my specific engine model?
The best way is to match your original part number to one of the numbers in our Part Number Matrix. Also, check your engine's HP and year against the compatibility tables. If your part number or model is not listed, this part may not fit.
What are common signs of a failing fuel pump?
Symptoms include difficulty starting, engine sputtering or stalling, loss of power especially under load, and a whining noise from the fuel tank or pump area.
Is any special programming or calibration needed after installation?
No. This is a direct-fit, plug-and-play component. No programming is required. Your engine's ECU will operate with the new pump just as it did with the original.
Can I install this myself?
While installation is straightforward for those with mechanical experience, we recommend professional installation. Working with fuel systems carries inherent risks. Always follow safety protocols from your engine's service manual.
What is the recommended replacement interval?
There is no fixed replacement interval for this part. It should be replaced when it fails or during a major engine overhaul if preventative maintenance is desired. Fuel quality and engine hours are primary factors in its lifespan.
Are the included contents all I need for the job?
The package includes the fuel pump assembly and a cable tie. You will reuse your existing mounting bolts and other hardware. No additional components are typically necessary unless the original hardware is damaged.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost?
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns?
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
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