Fuel Pump Assembly – Fits Mercury/Mariner 25-60 HP 4-Stroke (Replaces 881862T1, 892874T01, 899106T01)
Fuel Pump Assembly – Fits Mercury/Mariner 25-60 HP 4-Stroke (Replaces 881862T1, 892874T01, 899106T01) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
Delivery and Shipping
Orders are typically processed within 1–2 business days.
U.S. orders usually arrive within 6–15 days, depending on stock location and destination.
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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 881862T1, 892874T01, 899106T01) is backordered and will ship as soon as it is back in stock.
Product Details
This Fuel Pump Assembly is a direct-fit replacement for Mercury and Mariner 25–60 HP 4-stroke outboard engines manufactured between 2002 and 2021, covering both 3-cylinder and 4-cylinder EFI models.
It serves as a direct interchange for multiple part numbers, including Mercury 881862T1, 892874T01, 899106T01, Sierra 18-8866, and WSM 600-092.
- Engineered for a direct replacement installation with no modifications required.
- Compatible with gasoline/petrol fuels, including E10 blends.
- Features a direct plug-and-play electrical connection for easy setup.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury | 881862T1 |
| Mercury | 881862T07 |
| Mercury | 892874T |
| Mercury | 892874T01 |
| Mercury | 899106T |
| Mercury | 899106T01 |
| Mercury | 8M0118176 |
| Mercury | 8M0118177 |
| Mercury | 8M0141827 |
| Mercury | 8M0141844 |
| Sierra | 18-8866 |
| WSM | 600-092 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Mercury and Mariner models, this pump fits a wide range of 3-cylinder and 4-cylinder EFI outboards from 25 HP to 60 HP.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| 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 | |
| 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)
- 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
- Warranty
- Typically 1 year (manufacturer dependent)
- 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 terminals to prevent electrical hazards.
- Relieve the fuel system pressure according to your engine's service manual to avoid fuel spray.
- Carefully disconnect the fuel lines and the electrical connector from the old pump assembly.
- Remove the mounting bolts and take out the old fuel pump.
- Install the new fuel pump assembly, ensuring it is seated correctly, and secure it with the original mounting bolts.
- Reconnect the fuel lines and the electrical plug. Use the provided cable tie to secure wiring if needed.
- Reconnect the battery. Prime the fuel system by turning the key to the 'On' position and check for leaks.
- If no leaks are present, start the engine and confirm it runs smoothly.
Troubleshooting & FAQ
How do I know if my fuel pump is failing?
Common signs of a failing fuel pump include the engine having trouble starting, sputtering or hesitating at high speeds, losing power under load, or an unusual whining noise coming from the pump's location.
Is this pump compatible with ethanol-blended fuel?
Yes, this fuel pump is constructed with modern materials that are fully compatible with E10 (10% ethanol) gasoline blends.
The part number on my old pump is not listed. How can I confirm fitment?
If your exact part number is not on our cross-reference list, please verify that your engine's brand, model, horsepower, and year range match the compatibility table. Outboard components can be model-specific, so it's critical to confirm these details before purchasing.
What is the recommended replacement interval for this pump?
There is no fixed replacement interval for fuel pumps, as they are wear-and-tear items. Consider inspecting or replacing your pump if your outboard is over 10 years old or begins showing symptoms of fuel starvation to ensure reliability.
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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