Fuel Pump Assembly – Fits Mercury/Mariner 25–60 HP 4-Stroke Outboards (Replaces 881862T1, 892874T01, 899106T01)
Fuel Pump Assembly – Fits Mercury/Mariner 25–60 HP 4-Stroke Outboards (Replaces 881862T1, 892874T01, 899106T01) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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Fuel Pump Assembly – Fits Mercury/Mariner 25–60 HP 4-Stroke Outboar...
Fuel Pump Assembly – Fits Mercury/Mariner 25–60 HP 4-Stroke Outboards (Replaces 881862T1, 892874T01, 899106T01) is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket fuel pump assembly is intended as a direct replacement for selected Mercury and Mariner 25–60 HP four-stroke outboards. It is designed to restore fuel delivery on applicable EFI models while using the engine's existing mounting arrangement, fuel connections, and electrical system.
The replacement references associated with this listing include Mercury 881862T1, 892874T01, and 899106T01. Because fuel-pump fitment can vary by exact model, production year, configuration, and serial-number range, compare your original pump and verify the engine details before ordering.
- Direct-replacement fuel pump assembly for applicable Mercury and Mariner four-stroke outboards.
- Designed for a straightforward installation using the existing fuel-system and electrical connections.
- Suitable for gasoline/petrol marine fuel systems; confirm fuel-system requirements for your specific engine.
- Aftermarket replacement component; not manufactured or sold by Mercury or Mariner.
Part Number Matrix
The following numbers are reference and cross-reference information associated with this replacement. Always compare the original component and confirm exact engine fitment before installation.
| Brand | Part Number |
|---|---|
| Mercury | 881862T1, 881862T07, 881862T08 |
| Mercury | 892874T, 892874T01 |
| Mercury | 899106T, 899106T01 |
| Mercury | 8M0118176, 8M0118177, 8M0141827, 8M0141844 |
| Sierra | 18-8866 |
| WSM | 600-092 |
Engine & Model Compatibility
This listing is intended for selected Mercury and Mariner 25–60 HP four-stroke outboards, including applicable EFI configurations. The exact fitment may depend on the engine's model designation, year, configuration, and serial number. The horsepower range alone is not sufficient to confirm compatibility.
| Brand | Horsepower range | Stroke | Application | Fitment note |
|---|---|---|---|---|
| Mercury | 25–60 HP | 4-Stroke | Selected EFI outboards | Verify exact model, year, configuration, and serial number. |
| Mariner | 25–60 HP | 4-Stroke | Selected EFI outboards | Verify exact model, year, configuration, and serial number. |
Important: Do not assume that every 25–60 HP four-stroke engine uses the same pump. Compare the pump body, mounting points, connector, fuel-line arrangement, and applicable manufacturer reference before purchase.
Technical Specs
- Product Type
- Fuel pump assembly
- Application
- Selected Mercury and Mariner 25–60 HP 4-stroke outboards
- Installation
- Direct replacement
- Fuel Type
- Gasoline/petrol marine fuel systems
- Connection
- Existing electrical and fuel-system connections
- 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
- Product Classification
- Aftermarket replacement; not an OEM component
What’s in the Box
- 1 × Fuel pump assembly
- 1 × Cable tie
Mounting hardware, seals, hoses, wiring, and other parts are not included unless specifically shown or stated in the order details.
Installation Notes
- Disconnect the negative battery terminal and work in a well-ventilated area away from ignition sources.
- Relieve fuel-system pressure according to the service procedure for your exact engine.
- Place absorbent rags below the pump to collect residual fuel.
- Label and carefully disconnect the fuel lines and electrical connector from the original pump.
- Remove the original mounting hardware and take out the old assembly.
- Clean the mounting surface and compare the replacement pump with the original before fitting.
- Install the replacement pump using the original hardware unless the engine service manual specifies otherwise.
- Reconnect the fuel lines and electrical connector, checking that every connection is secure and correctly routed.
- Reconnect the negative battery terminal.
- Prime the fuel system according to the engine manufacturer's procedure.
- Start the engine and inspect the pump, fuel lines, and connections for leaks before operating the boat.
Troubleshooting & FAQ
How can I confirm this pump fits my engine?
Check the engine brand, model designation, horsepower, four-stroke configuration, production year, and serial-number range. Compare the original pump's shape, mounting points, connector, fuel-line arrangement, and manufacturer reference with the information above. If any of these details differ, confirm fitment with the engine service manual before ordering.
What are common symptoms of a failing fuel pump?
Possible symptoms include hard starting, engine stalling, sputtering or hesitation under load, loss of power, or an abnormal pump noise. These symptoms can also be caused by restricted fuel lines, contaminated fuel, wiring faults, filters, injectors, or other fuel-system problems, so diagnose the system before replacing the pump.
Is this pump compatible with E10 fuel?
The listing is intended for gasoline/petrol marine fuel systems. Fuel compatibility depends on the complete fuel system and the requirements of the specific engine. Follow the engine manufacturer's fuel guidance and avoid contaminated or stale fuel.
Is calibration required after installation?
A replacement fuel pump normally does not require electronic programming. Correct installation, fuel-system priming, leak inspection, and verification of the engine's normal fuel pressure are still required. Follow the service manual for your exact engine.
What can cause a marine fuel pump to fail?
Common causes include water or debris in the fuel, stale or contaminated fuel, restricted filters or lines, corrosion, overheating, and electrical or wiring problems. Correct the underlying cause before installing a replacement pump.
Is this an OEM pump?
No. This listing is for an aftermarket replacement component. The OEM and aftermarket numbers shown above are provided as reference information and do not by themselves replace exact engine fitment verification.
What are the shipping and warranty terms?
Shipping availability, delivery estimates, returns, and any applicable warranty are determined by the seller's current order and policy terms. Review the applicable policy information at checkout or contact support before ordering if you need confirmation.
Safety & Important Information
- Fuel is flammable. Disconnect the battery, relieve fuel pressure, provide ventilation, and keep all ignition sources away during installation.
- Verify the original part, engine model, year, configuration, and serial number before purchase.
- Do not operate the engine if any fuel leak is present.
- Professional installation is recommended when the required fuel-system service procedure is unfamiliar.
- This is an aftermarket replacement, not an OEM component.
About Sea Sierra
- Pro-Grade Standards — Marine replacement parts selected for dependable service in real-world conditions.
- Global Fulfillment — Shipping options and delivery estimates are shown according to the destination and current checkout availability.
- Manufacturer-Direct Value — Practical replacement solutions supported by product and order assistance.
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