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QFS Low-Pressure Fuel Pump for Mercury & Mariner Optimax DFI 115-300HP, Lift Pump Repair
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US$86.99 cheaper than the new price!!
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Used US$57.99
Product details
| Management number | 214280992 | Release Date | 2026/04/12 | List Price | US$57.99 | Model Number | 214280992 | ||
|---|---|---|---|---|---|---|---|---|---|
| Category | |||||||||
- HFP-612 is engineered as a direct replacement fuel pump for OE # 855843, 855843-2, 855843-3, 85698414, 8558432, and 8M0047624, providing a precision fit for all years of Mercury and Mariner Optimax / DFI outboard engines
- This low-pressure lift pump serves as the vital first stage of the fuel system, drawing fuel from the main tank to feed the vapor separator tank, ensuring the high-pressure system never starves during high-speed operation or heavy acceleration
- Pre-Assembled Installation Kit: Includes the electric fuel pump pre-attached to the mounting bracket with the integrated wiring harness, plus application-specific fuel hoses and stainless steel hose clamps
- Optimized for the demanding performance of 2.5L and 3.0L V6 Optimax, Pro XS, and Racing XS models, restoring factory fuel volume to eliminate common issues like surging, mid-range bogging, and loss of top-end RPM
- Manufactured from advanced, ethanol-resistant materials, this pump is built to withstand the chemical breakdown caused by modern marine fuels, preventing internal diaphragm failure and motor seizure in harsh saltwater environments
- Get back on the water with confidence – Guaranteed – As a US-based small business, we understand that for an Optimax owner, reliability is everything. Backed by our lifetime warranty, we stand by our products and our community
| Fit Type | Vehicle Specific Fit |
|---|---|
| Gas Type | Gasoline |
| Brand Name | HFP |
| Item Weight | 2 Pounds |
| Manufacturer | HFP |
| Body Material | Stainless Steel |
| Material Type | Metal |
| Mounting Type | Engine Mount |
| Product Grade | Replacement Part |
| Product Style | Fuel Pump |
| Connector Type | [Same as OEM] |
| Operation Mode | EFI |
| Item Dimensions | 2.5 x 5.5 x 9 inches |
| Auto Part Position | Inside |
| Included Components | Fuel Pump w/ Wiring Harness & Mounting Bracket, Fuel Hoses, Hose Clamps |
| Inlet Connection Type | [Same as OEM] |
| Part Interchange Info | replacement |
| Outlet Connection Type | [Same as OEM]" or "Mercury OEM Connection Type |
| Manufacturer Part Number | HFP-612 |
| Compatible with Vehicle Type | Boat |
| Manufacturer Warranty Description | Lifetime Warranty |
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