The Mercury 15029 EFI O-Ring & Seal Kit is a critical component for ensuring the reliable performance of Mercury Marine and Mariner EFI outboard engines.
 
Designed for use with Laser-style front injector EFI systems, this comprehensive kit supports a wide range of two-stroke models from 150 HP to 300 HP, including the high-performance 300 Pro Max, 300X, and the versatile SportJet 240 EFI.
 
Whether you're conducting regular maintenance or a full fuel system rebuild, this kit helps maintain proper sealing and performance throughout the engine's fuel and air systems.
 
Compatible with a broad lineup of engines, this kit fits Mercury and Mariner EFI outboards in 2.4L, 2.5L, and 3.0L engine families. Common supported models include the Mercury 150 HP EFI, 175 HP EFI, 200 HP EFI, 225 HP EFI, and the SportJet 240 EFI.
 
It is also designed to meet the needs of performance engines like the white tipped injector 3.0 Liter , which demand precise component fitment and high sealing integrity.
 
The 15029 O-Ring & Seal Kit includes multiple OEM-grade O-rings and seals that are engineered to withstand the high pressures and fuel exposure typical of EFI systems.
 
These components are used throughout the fuel rails, injectors, and air regulators, which are vital to efficient fuel delivery and engine performance.
 
Over time, the rubber materials used in these systems can degrade, leading to pressure loss, misfires, and fuel leaks. This kit addresses those issues by providing everything needed to restore the system to factory specifications.
 
Whether you're servicing a standard outboard like the Mercury 200 HP EFI or working on a performance model like the 300 Pro Max, this kit ensures a proper seal across all fuel and air pathways.
 
It is especially valuable for engines featuring Laser-style front injectors, which require precise O-ring fitment for optimal performance.
 
The kit is also a recommended solution for restoring older outboards that are beginning to show signs of wear in their fuel injection systems.
 
The Mercury 15029 EFI O-Ring & Seal Kit is a must-have for marine technicians and experienced boat owners who want to ensure their engines continue to run smoothly and efficiently.
 
Supporting a variety of Mercury and Mariner models across the 150 HP to 300 HP range—including the 2.4L, 2.5L, and 3.0L platforms—this kit plays a crucial role in keeping your outboard engine performing at its best.
 
Contact Mike Hill at +1-714-697-1716 or email mike@buckshotracing77.com for technical support.