AUGREX Fuel Pump for Mercury 35–225HP 2-Stroke Outboards — Mechanical Replacement, Rotatable or Fixed Vacuum Pipe

This precision replacement pump is engineered to match the fueling needs of numerous Mercury 2-stroke outboard engines. It fits a broad range of models and part numbers, offers straightforward installation choices for vacuum plumbing, and is designed to supply consistent low-pressure fuel to the engine’s high-pressure system. The description below answers common buyer questions and lists the practical details you’ll want before ordering.

Which Mercury engines and part numbers does this pump work with?

The AUGREX pump covers a wide span of Mercury 2-stroke outboard engines and is listed as compatible with multiple factory part numbers. It supports models from small to large two-stroke powerplants, making it a versatile replacement across a range of boats.

• Compatible with Mercury 35, 50, 60, 115 and 225 HP 2-stroke outboards and many intermediate ratings.
• Fits factory reference numbers including 14360A16, 14360A41, 14360A43, 14360A50, 14360A71, 14360A73, and 14360A78.
• Also suitable for engines in the 30HP–300HP spectrum listed by cross-reference.

How is the vacuum pipe installed and what are the differences between models?

Two pump variants offer different vacuum-pipe arrangements to suit installation preference. One version (Z798 style) includes a rotatable vacuum pipe you can orient during installation; the other (Z789 style) has a fixed pipe position that cannot swivel.

• Z798-style: vacuum pipe supplied loose so you can route it in the best direction for your rig.
• Z789-style: vacuum pipe fixed for a specific mounting layout—no rotation available.
• Choose the style that matches your boat’s fuel line routing for easiest fitment.

What does this pump actually do for my outboard's fuel system?

This mechanical pump draws fuel from the tank and supplies it under controlled low pressure to the engine’s fuel supply line. It provides steady delivery for the high-pressure components to meter fuel to each cylinder, promoting consistent engine performance under load.

• Pumps fuel from the tank into the engine’s low-pressure feed circuit.
• Maintains constant feed pressure for secondary pressurization by the high-pressure pump.
• Supports consistent fuel delivery across operating conditions for smoother running.

What should I know about fitment and choosing the right replacement?

Confirming part numbers and engine compatibility is the simplest way to ensure a correct replacement. Check the Mercury reference numbers on your existing pump and evaluate whether you need a rotatable vacuum connection or a fixed one before purchasing.

• Verify your engine HP and existing pump part number against the compatible list provided.
• Decide between a swivel vacuum connection (for flexible routing) or fixed vacuum pipe (for direct swaps).
• Inspect mounting points and inlet/outlet positions to match your engine’s bracket and hoses.

Who is this for: The AUGREX mechanical fuel pump is intended for boat owners, marine technicians, and DIY mechanics who need a direct replacement or upgrade for Mercury two-stroke outboard fuel systems. It’s suitable for those restoring older engines, performing routine maintenance, or replacing a failed pump on mid- to high-power Mercury 2-stroke motors. If you require cross-reference compatibility or a specific vacuum-pipe orientation, select the appropriate variant before ordering.