62Y-24410-04-00 826398T3 Mechanical Fuel Pump Assembly for 4-Stroke Outboards, Compatible with Yamaha and Mercury Mariner 25-60 HP, Replaces ref 826398A1 826398A3

62Y-24410-04-00 826398T3 Mechanical Fuel Pump Assembly for 4-Stroke Outboards, Compatible with Yamaha and Mercury Mariner 25-60 HP, Replaces ref 826398A1 826398A3

Which pump is this?

MECHANICAL LOW-PRESSURE DESIGN: This engine-mounted diaphragm pump uses a plunger, diaphragm, return springs and check valves to move fuel from the boat tank toward the carburetor or low-pressure supply circuit, matching the official Yamaha FUEL exploded view for this part family. It is not an electric in-tank pump and not the high-pressure EFI pump. Searching only by horsepower can lead to a similar-looking but different pump and an immediate return.

Signs yours is due

REPLACE THE COMPLETE PUMP: Intended as a complete-pump replacement for symptoms such as loss of prime, fuel starvation under load, temporary recovery when the primer bulb is squeezed, external seepage or gasoline contamination of four-stroke engine oil after the fuel path has been checked. The package contains one fuel-pump assembly only; fuel filter, hoses, clamps, mounting bolts, gaskets and repair-kit components are not included unless pictured by the seller.

Will it fit?

COMPATIBLE FITMENT: Compatible with select Yamaha F25, F30, F40, F50, F60, FT25, FT50 and FT60 four-stroke outboards listed in official Yamaha catalog records for the 62Y-24410 family, and select Mercury or Mariner 25-60 HP carbureted four-stroke models listed for 826398T3. Match the original pump number and engine serial or PID before ordering. Not for two-stroke engines or electric high-pressure fuel systems.

Every row is from this SKU fitment workbook. Match the number stamped on the pump you remove. Same horsepower name shipped different pumps.

OEM and swap numbers

VERIFIED PART-NUMBER CHAIN: Replaces ref 62Y-24410-00-00, 62Y-24410-01-00, 62Y-24410-02-00, 62Y-24410-03-00 and 62Y-24410-04-00, plus 826398A1, 826398A3 and 826398T3. Mercury lists 826398T3 as the current number with 826398A1 and 826398A3 superseded. Catalog-supported aftermarket references include 1399-39546, PAF25-05130000 and 26398-2. Do not use 18-35304 as a cross-reference for this pump family.

Wrong part

If the number on your old pump is not in the table above, this is the wrong pump.

What ships

One complete mechanical fuel-pump assembly. No hose, no filter, no bolts, no carburetor, no rebuild kit.

Install

INSTALL WITH SERIAL-NUMBER DISCIPLINE: Work in a ventilated area away from ignition sources, label the inlet and outlet hoses, compare the actuator and port orientation with the removed pump, renew damaged seals, use the engine manual's fastener torque, prime the line and inspect for leaks. Mercury applications are separated by official serial-number ranges; if the old pump number cannot be read, send the engine model or serial number and a photo of the original pump before purchase.

FAQ

Q: Does it replace 62Y-24410-05-00? A: That suffix is not listed in the official Yamaha catalog records we verified. Confirm with an authorized dealer using your PID before ordering.

Q: Is 18-35304 the correct replacement? A: No. Published catalogs map that number to a different small-engine pump family.

Q: Will it fit every Yamaha or Mercury 50 HP? A: No. Match the original pump number and serial/PID.

Q: Is this electric? A: No. It is an engine-driven mechanical low-pressure diaphragm pump.

Please note

Aftermarket fuel pump by GHMarine. Not affiliated with the engine brands named above. Confirm the number on the removed pump, the engine model, and the serial range before you order. This page is the pump only, not a multi-part kit.