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

Fuel Injector for Sea-Doo GTI STD 155 1503

This fuel injector for Sea-Doo is a direct replacement for the 2017 GTI STD 155 1503, cross-referenced under 420874846, delivering the measured fuel spray these engines need for smooth, reliable running.

Overview

This fuel injector for Sea-Doo keeps the 1503 engine in a GTI STD 155 fed with a precise, atomized fuel charge on every cycle. It is built as a drop-in replacement so a failed or fouled injector can be swapped without guesswork. It suits riders and shops servicing 2017 GTI STD 155 machines.

Built For Performance

• Cross-referenced to OEM part number 420874846 for a confident match
• Atomizes fuel for consistent combustion across the RPM range
• Sealed body resists fuel and heat degradation in marine use
• Direct-fit dimensions allow simple replacement of the original unit
• Balanced flow keeps all cylinders running evenly

Fits These Machines

• for Sea-Doo GTI STD 155 1503 2017

On-The-Job Use

• Restoring rough-running machines with a failed or dirty injector
• Scheduled maintenance before a season on the water
• Shop repairs on 1503-equipped GTI STD 155 models
• Replacing an injector after moisture or debris enters the fuel system

Specs At A Glance

Good To Know

Q: Is this an original Sea-Doo part? A: No, this is a replacement fuel injector built for Sea-Doo applications and cross-referenced to part 420874846.

Q: How many injectors should I replace at once? A: Matching flow across cylinders matters, so many riders replace injectors as a set when one fails.

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