KEMSO Intank Fuel Pump for Sea-Doo Watercraft — 13804 High-Flow Ethanol-Compatible (1998–2021)

The KEMSO 13804 intank fuel pump is a high-flow, ethanol-compatible replacement engineered to restore and improve fuel delivery for a wide range of Sea-Doo watercraft from 1998–2021.

Whether you’re bringing an older Sea-Doo back to life or upgrading a newer hull for more consistent performance, the KEMSO 13804 is built to exceed the original equipment flow and durability. It installs inside the fuel tank and matches fitment for multiple Sea-Doo DI and carbureted models, offering a direct-swap option with robust internal components and US-based technical support.

Which Sea-Doo models and years will this pump fit?

The KEMSO 13804 covers many Sea-Doo model families and years, including DI and 4-TEC applications. It’s intended as a direct-replacement for common GTX, RX, GTI, RXP, RXT, Wake, Spark and GTR variants within the specified year ranges, removing guesswork when sourcing a compatible pump.

• Fits Sea-Doo DI GTX, RX, LRV 3D models (1998–2007)
• Compatible with XP/LRV DI (2002–2004)
• Works with GTI, GSX, GTX RFI, LE 4-TEC 130/155/800 (1998–2005)
• Serviceable for GTI, RXP, RXT, Wake PRO, Spark, GTR (2008–2021)

How does this pump improve fuel delivery compared with the original unit?

KEMSO engineered this pump for greater flow and a more robust bypass threshold than many OEM pumps, which helps maintain steady fuel pressure under higher demand. It supports greater volume for fuel-starved or high-performance engines without sacrificing fit or electrical compatibility.

• Up to 200 LPH flow capacity versus original 60–80 LPH
• Bypass valve calibrated at 125.8 psi for improved overflow control
• Designed to operate on gasoline and ethanol blends

What durability and warranty protections does KEMSO provide?

The pump is serialized and backed by KEMSO’s lifetime warranty policy, reflecting the brand’s confidence in build quality. In addition to the warranty, US-based technical support is available to handle installation questions or post-sale troubleshooting.

• Serialized fuel pump body for lifetime warranty coverage
• USA-based technical support staffed by trained technicians
• Components chosen for resistance to modern fuel blends including ethanol

Is installation straightforward, and what should I check during replacement?

For technicians and experienced owners the pump is a direct in-tank swap for listed models, but basic fuel-system precautions and proper electrical connections are essential. Verify inlet and outlet fittings, electrical connector compatibility, and that the sender and mounting flange align with your tank before finalizing the install.

• Confirm electrical connector type and polarity before connecting
• Inspect sealing O-rings and replace if brittle or damaged
• Prime/purge the system according to Sea-Doo procedures after installation

Who is this product for? The KEMSO 13804 intank fuel pump is aimed at Sea-Doo owners, marine technicians, and restoration enthusiasts who need a reliable, higher-flow replacement that matches factory fitment. It’s especially useful for riders upgrading engines or dealing with low-flow symptoms caused by aging pumps, and for anyone running ethanol-blended fuels who wants a pump specified for those conditions. If you require a direct-replacement pump with increased capacity, serialized warranty coverage, and US-based support, this KEMSO pump is a practical choice.