1399-07352 Aftermarket Mercury Fuel Pump 25HP & 50HP Engines (1976-1999) | Sawley's Select Marine Parts

🔧 Product Description

Aftermarket replacement Pulse-Operated Fuel Pump - Replaces Part Number: 1399-07352

New aftermarket mechanical/pulse-operated fuel pump replacing 1399-07352. It is configured for Mercury/Mariner 25HP-50HP carburetted outboards using 1399-07352, Johnson/Evinrude applications using BRP 438556/Sierra 18-7352 after OEM confirmation. The exact engine model, serial range, fuel pressure and connection layout must match the original installation.

⚙️ Key Features

• Direct replacement for the 1399-07352 service family

• Designed for Mercury/Mariner carburetted outboards and documented OMC cross-reference applications

• Pulse- or engine-driven low-pressure fuel delivery

• Marine fuel-resistant diaphragm and valve materials

• Confirm the engine serial, pump pressure and port orientation before installation

🧰 Kit / Assembly Contents

• 1 × Complete mechanical/pulse fuel-pump assembly - Part Number: 1399-07352

• 1 × Integrated diaphragm and check-valve assembly

• 1 × Pump-to-engine mounting gasket - supplied where included by the selected manufacturer

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 1399-07352 ↔ Cross-references Sierra 18-7352 and BRP 438556 on specified applications

OEM / Related Numbers:

• 438556

• 18-7352

Aftermarket / Verified Equivalents:

• Sierra: 18-7352

• EMP: 1399-07352

• Recmar: REC1399-07352

🚤 Compatibility

Commonly used on:

• Mercury/Mariner carburetted outboards and documented OMC cross-reference applications

Typically suits:

• Engine models:

• Mercury/Mariner 25HP-50HP carburetted outboards using 1399-07352

• Johnson/Evinrude applications using BRP 438556/Sierra 18-7352 after OEM confirmation

• HP / Output Range: 25HP - 50HP on the Mercury family

• Engine / System Type: Mercury/Mariner carburetted outboards and documented OMC cross-reference applications

• Year Range: Approximately 1976 - 1999

• Serial / Pump Identification: Match P/N 1399-07352 to the model-specific parts diagram and verify pressure, electrical connector, inlet/outlet orientation and mounting before ordering.

🔌 Function

The engine-driven diaphragm pump uses crankcase pulses or a cam-operated lever to draw fuel from the tank and deliver a regulated low-pressure supply to the carburettor, vapour separator or downstream high-pressure pump.

Common signs of failure:

• Hard starting after the engine has been standing

• Fuel starvation, hesitation or loss of power under load

• Failure to fill the carburettor bowls or vapour separator

• Fuel leaking from the pump body or ruptured diaphragm

• Engine-oil dilution or fuel entering the pulse passage on a failed pump

📦 Condition

• New aftermarket replacement part

• Brand new

• Supplied in original or equivalent packaging