420874846 Fuel Injector for Sea-Doo GTXS STD 155 1503 2017

Fuel Injector for Sea-Doo

This fuel injector for Sea-Doo meters fuel into the 1503 engine so it starts cleanly, idles evenly, and holds power under acceleration; it replaces the 420874846 injector used on the GTXS STD 155.

Overview

This fuel injector for Sea-Doo is a direct-fit replacement for a worn or clogged injector on 1503-powered watercraft. Correct fuel delivery keeps combustion stable, which protects performance and fuel economy. It is a practical choice for owners and shops servicing a GTXS STD 155.

Built For Performance

• Cross-references the 420874846 injector number
• Solenoid-driven design for consistent spray metering
• Sealed housing that resists fuel and moisture contact
• Built to match original mounting and connector fitment
• Supports steady air and fuel ratios through the rev range

Fits These Machines

• for Sea-Doo GTXS STD 155, 2017

On-The-Job Use

• Replacing a clogged or failed injector flagged by a fault code
• Scheduled fuel system maintenance on high-hour engines
• Restoring smooth idle and sharp throttle pickup before the season

Specs At A Glance

Good To Know

Q: What symptoms suggest a bad injector? A: Hard starting, rough idle, misfires, and power loss on a 1503 engine are common signs, so testing or cleaning the injector before replacement is a sensible step.

Q: Should I replace all injectors at once? A: Replacing them as a set helps keep flow rates matched across cylinders and can save repeat labor later, though replacing a single faulty unit is acceptable.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.